/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:21:26,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:21:26,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:21:26,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:21:26,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:21:26,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:21:26,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:21:26,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:21:26,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:21:26,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:21:26,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:21:26,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:21:26,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:21:26,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:21:26,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:21:26,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:21:26,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:21:26,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:21:26,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:21:26,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:21:26,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:21:26,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:21:26,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:21:26,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:21:26,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:21:26,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:21:26,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:21:26,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:21:26,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:21:26,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:21:26,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:21:26,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:21:26,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:21:26,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:21:26,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:21:26,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:21:26,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:21:26,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:21:26,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:21:26,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:21:26,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:21:26,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:21:26,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:21:26,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:21:26,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:21:26,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:21:26,643 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:21:26,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:21:26,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:21:26,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:21:26,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:21:26,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:21:26,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:21:26,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:21:26,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:21:26,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:21:26,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:21:26,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:21:26,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:21:26,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:21:26,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:21:26,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:21:26,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:21:26,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:21:26,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:21:26,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:21:26,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:21:26,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:21:26,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:21:26,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:21:26,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:21:26,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:21:26,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:21:26,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:21:26,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:21:26,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:21:26,983 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:21:26,984 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label38.c [2020-10-13 09:21:27,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/444f0bcba/9eb4ed74875445f7bedfb61b9d8006f0/FLAGda62a7f9e [2020-10-13 09:21:27,750 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:21:27,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label38.c [2020-10-13 09:21:27,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/444f0bcba/9eb4ed74875445f7bedfb61b9d8006f0/FLAGda62a7f9e [2020-10-13 09:21:27,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/444f0bcba/9eb4ed74875445f7bedfb61b9d8006f0 [2020-10-13 09:21:27,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:21:27,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:21:27,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:21:27,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:21:27,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:21:27,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:21:27" (1/1) ... [2020-10-13 09:21:27,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:27, skipping insertion in model container [2020-10-13 09:21:27,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:21:27" (1/1) ... [2020-10-13 09:21:27,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:21:28,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:21:29,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:21:29,088 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:21:29,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:21:29,337 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:21:29,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29 WrapperNode [2020-10-13 09:21:29,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:21:29,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:21:29,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:21:29,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:21:29,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29" (1/1) ... [2020-10-13 09:21:29,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29" (1/1) ... [2020-10-13 09:21:29,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29" (1/1) ... [2020-10-13 09:21:29,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29" (1/1) ... [2020-10-13 09:21:29,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29" (1/1) ... [2020-10-13 09:21:29,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29" (1/1) ... [2020-10-13 09:21:29,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29" (1/1) ... [2020-10-13 09:21:29,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:21:29,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:21:29,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:21:29,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:21:29,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:21:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:21:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:21:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:21:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:21:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:21:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:21:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:21:29,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:21:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:21:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:21:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:21:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:21:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:21:31,884 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:21:31,885 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:21:31,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:21:31 BoogieIcfgContainer [2020-10-13 09:21:31,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:21:31,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:21:31,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:21:31,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:21:31,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:21:27" (1/3) ... [2020-10-13 09:21:31,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13989518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:21:31, skipping insertion in model container [2020-10-13 09:21:31,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:29" (2/3) ... [2020-10-13 09:21:31,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13989518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:21:31, skipping insertion in model container [2020-10-13 09:21:31,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:21:31" (3/3) ... [2020-10-13 09:21:31,902 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label38.c [2020-10-13 09:21:31,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:21:31,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:21:31,937 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:21:31,965 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:21:31,965 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:21:31,965 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:21:31,966 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:21:31,966 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:21:31,966 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:21:31,966 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:21:31,966 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:21:31,995 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:21:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 09:21:32,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:32,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:32,004 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:32,011 INFO L82 PathProgramCache]: Analyzing trace with hash 47604442, now seen corresponding path program 1 times [2020-10-13 09:21:32,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:32,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856633509] [2020-10-13 09:21:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:32,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 09:21:32,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-13 09:21:32,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:21:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:21:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:21:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:21:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:32,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:32,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:32,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:32,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:21:32,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:21:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:21:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:21:32,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856633509] [2020-10-13 09:21:32,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:21:32,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:21:32,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668134547] [2020-10-13 09:21:32,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:21:32,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:21:32,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:21:32,605 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2020-10-13 09:21:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:37,793 INFO L93 Difference]: Finished difference Result 1515 states and 2848 transitions. [2020-10-13 09:21:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:21:37,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-13 09:21:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:37,820 INFO L225 Difference]: With dead ends: 1515 [2020-10-13 09:21:37,820 INFO L226 Difference]: Without dead ends: 1038 [2020-10-13 09:21:37,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:37,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-13 09:21:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2020-10-13 09:21:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-10-13 09:21:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1642 transitions. [2020-10-13 09:21:37,953 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1642 transitions. Word has length 17 [2020-10-13 09:21:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:37,954 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1642 transitions. [2020-10-13 09:21:37,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:21:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1642 transitions. [2020-10-13 09:21:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-13 09:21:37,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:37,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:37,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:21:37,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:37,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:37,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1828903046, now seen corresponding path program 1 times [2020-10-13 09:21:37,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:37,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042346885] [2020-10-13 09:21:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:38,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:39,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:42,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:42,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 09:21:42,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:21:42,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4807 [2020-10-13 09:21:42,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:42,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:42,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-13 09:21:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:21:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:21:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:42,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:42,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:42,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:21:42,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:42,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:21:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:42,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:21:43,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:21:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:21:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:43,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:43,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:21:43,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:21:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:21:43,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042346885] [2020-10-13 09:21:43,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:43,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:21:43,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769406723] [2020-10-13 09:21:43,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:21:43,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:43,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:21:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:21:43,219 INFO L87 Difference]: Start difference. First operand 1031 states and 1642 transitions. Second operand 5 states. [2020-10-13 09:21:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:46,604 INFO L93 Difference]: Finished difference Result 3089 states and 4973 transitions. [2020-10-13 09:21:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:21:46,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-13 09:21:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:46,620 INFO L225 Difference]: With dead ends: 3089 [2020-10-13 09:21:46,621 INFO L226 Difference]: Without dead ends: 2064 [2020-10-13 09:21:46,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:21:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2020-10-13 09:21:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 2060. [2020-10-13 09:21:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2060 states. [2020-10-13 09:21:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3133 transitions. [2020-10-13 09:21:46,696 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3133 transitions. Word has length 199 [2020-10-13 09:21:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:46,698 INFO L479 AbstractCegarLoop]: Abstraction has 2060 states and 3133 transitions. [2020-10-13 09:21:46,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:21:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3133 transitions. [2020-10-13 09:21:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-13 09:21:46,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:46,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:46,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:21:46,709 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:46,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:46,710 INFO L82 PathProgramCache]: Analyzing trace with hash 506988354, now seen corresponding path program 1 times [2020-10-13 09:21:46,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:46,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824245262] [2020-10-13 09:21:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:46,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:48,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:49,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 09:21:49,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2374 [2020-10-13 09:21:49,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:21:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:21:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:21:49,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:49,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:49,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:49,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:49,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:21:49,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:49,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:21:49,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:21:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:21:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:49,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:21:49,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:21:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-13 09:21:49,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 09:21:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:21:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:21:50,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824245262] [2020-10-13 09:21:50,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:50,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:21:50,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199066271] [2020-10-13 09:21:50,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:21:50,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:50,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:21:50,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:21:50,602 INFO L87 Difference]: Start difference. First operand 2060 states and 3133 transitions. Second operand 6 states. [2020-10-13 09:21:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:53,655 INFO L93 Difference]: Finished difference Result 4240 states and 6413 transitions. [2020-10-13 09:21:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:21:53,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 267 [2020-10-13 09:21:53,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:53,671 INFO L225 Difference]: With dead ends: 4240 [2020-10-13 09:21:53,672 INFO L226 Difference]: Without dead ends: 2122 [2020-10-13 09:21:53,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:21:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2020-10-13 09:21:53,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2060. [2020-10-13 09:21:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2060 states. [2020-10-13 09:21:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2833 transitions. [2020-10-13 09:21:53,746 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2833 transitions. Word has length 267 [2020-10-13 09:21:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:53,748 INFO L479 AbstractCegarLoop]: Abstraction has 2060 states and 2833 transitions. [2020-10-13 09:21:53,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:21:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2833 transitions. [2020-10-13 09:21:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-13 09:21:53,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:53,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:53,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:21:53,765 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:53,766 INFO L82 PathProgramCache]: Analyzing trace with hash -77059950, now seen corresponding path program 1 times [2020-10-13 09:21:53,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:53,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952894226] [2020-10-13 09:21:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:53,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:56,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:56,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-13 09:21:56,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2423 [2020-10-13 09:21:56,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 09:21:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:21:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:56,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:56,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:56,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:56,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:21:56,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:56,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:56,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:56,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:21:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 09:21:56,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:21:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:21:56,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 09:21:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:56,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:56,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:56,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:21:56,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:21:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-13 09:21:56,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:56,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:56,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 09:21:56,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:21:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:21:57,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952894226] [2020-10-13 09:21:57,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:57,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:57,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911158412] [2020-10-13 09:21:57,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:57,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:57,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:57,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:57,152 INFO L87 Difference]: Start difference. First operand 2060 states and 2833 transitions. Second operand 7 states. [2020-10-13 09:22:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:00,425 INFO L93 Difference]: Finished difference Result 4231 states and 5864 transitions. [2020-10-13 09:22:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:22:00,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-13 09:22:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:00,440 INFO L225 Difference]: With dead ends: 4231 [2020-10-13 09:22:00,440 INFO L226 Difference]: Without dead ends: 2108 [2020-10-13 09:22:00,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:22:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2020-10-13 09:22:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2070. [2020-10-13 09:22:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-13 09:22:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2712 transitions. [2020-10-13 09:22:00,541 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2712 transitions. Word has length 291 [2020-10-13 09:22:00,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:00,542 INFO L479 AbstractCegarLoop]: Abstraction has 2070 states and 2712 transitions. [2020-10-13 09:22:00,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:00,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2712 transitions. [2020-10-13 09:22:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-13 09:22:00,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:00,548 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:00,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:22:00,548 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:00,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:00,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1530664646, now seen corresponding path program 1 times [2020-10-13 09:22:00,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:00,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258358849] [2020-10-13 09:22:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:00,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:02,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:03,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:03,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-13 09:22:03,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:22:03,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3401 [2020-10-13 09:22:03,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:03,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:22:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:22:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:22:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:22:04,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:04,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:04,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:04,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:04,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:04,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:22:04,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:04,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:04,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:04,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:22:04,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:22:04,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:22:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:04,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:22:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:04,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:04,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:22:04,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:22:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-13 09:22:04,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:22:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 09:22:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:22:05,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258358849] [2020-10-13 09:22:05,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:05,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:22:05,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906959789] [2020-10-13 09:22:05,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:22:05,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:05,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:22:05,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:22:05,578 INFO L87 Difference]: Start difference. First operand 2070 states and 2712 transitions. Second operand 10 states. [2020-10-13 09:22:07,136 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-13 09:22:07,312 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-13 09:22:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:09,874 INFO L93 Difference]: Finished difference Result 4483 states and 5896 transitions. [2020-10-13 09:22:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 09:22:09,875 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 303 [2020-10-13 09:22:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:09,889 INFO L225 Difference]: With dead ends: 4483 [2020-10-13 09:22:09,890 INFO L226 Difference]: Without dead ends: 2292 [2020-10-13 09:22:09,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-13 09:22:09,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2020-10-13 09:22:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2074. [2020-10-13 09:22:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2074 states. [2020-10-13 09:22:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2524 transitions. [2020-10-13 09:22:09,955 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2524 transitions. Word has length 303 [2020-10-13 09:22:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:09,956 INFO L479 AbstractCegarLoop]: Abstraction has 2074 states and 2524 transitions. [2020-10-13 09:22:09,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:22:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2524 transitions. [2020-10-13 09:22:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 09:22:09,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:09,965 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:09,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:22:09,965 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:09,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:09,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2031823807, now seen corresponding path program 1 times [2020-10-13 09:22:09,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:09,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755213321] [2020-10-13 09:22:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:15,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-13 09:22:15,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:22:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 09:22:15,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:22:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:22:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:22:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:15,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:15,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:15,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:22:15,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:22:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:15,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:15,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:22:15,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:15,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 09:22:15,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:15,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:22:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:15,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:22:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:15,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:15,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:22:15,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:22:15,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:15,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:15,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:22:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:15,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:15,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-13 09:22:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:15,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:15,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:22:15,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:22:15,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:22:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 30 proven. 128 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-13 09:22:15,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755213321] [2020-10-13 09:22:15,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:15,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:15,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624637387] [2020-10-13 09:22:15,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:15,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:15,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:15,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:15,969 INFO L87 Difference]: Start difference. First operand 2074 states and 2524 transitions. Second operand 7 states. [2020-10-13 09:22:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:18,707 INFO L93 Difference]: Finished difference Result 4854 states and 5882 transitions. [2020-10-13 09:22:18,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:22:18,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-13 09:22:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:18,720 INFO L225 Difference]: With dead ends: 4854 [2020-10-13 09:22:18,720 INFO L226 Difference]: Without dead ends: 2786 [2020-10-13 09:22:18,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-13 09:22:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2756. [2020-10-13 09:22:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2020-10-13 09:22:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3174 transitions. [2020-10-13 09:22:18,795 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3174 transitions. Word has length 376 [2020-10-13 09:22:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:18,796 INFO L479 AbstractCegarLoop]: Abstraction has 2756 states and 3174 transitions. [2020-10-13 09:22:18,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3174 transitions. [2020-10-13 09:22:18,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-13 09:22:18,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:18,812 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:18,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:22:18,813 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:18,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:18,813 INFO L82 PathProgramCache]: Analyzing trace with hash -908367418, now seen corresponding path program 1 times [2020-10-13 09:22:18,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:18,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509021308] [2020-10-13 09:22:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:18,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:23,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:23,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 611 [2020-10-13 09:22:23,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:22:23,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 09:22:23,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-13 09:22:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:22:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:24,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:24,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:24,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:24,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:24,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:22:24,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:24,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:24,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 09:22:24,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:24,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 09:22:24,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-13 09:22:24,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:24,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 09:22:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:24,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:24,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:22:24,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:22:24,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:24,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:24,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:24,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:22:24,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:24,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 09:22:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:24,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:24,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:22:24,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:22:24,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:22:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-13 09:22:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:24,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:22:24,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:22:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:22:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 114 proven. 134 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2020-10-13 09:22:24,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509021308] [2020-10-13 09:22:24,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:24,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:22:24,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248310921] [2020-10-13 09:22:24,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:22:24,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:24,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:22:24,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:22:24,965 INFO L87 Difference]: Start difference. First operand 2756 states and 3174 transitions. Second operand 8 states. [2020-10-13 09:22:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:28,978 INFO L93 Difference]: Finished difference Result 9645 states and 11384 transitions. [2020-10-13 09:22:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:22:28,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 595 [2020-10-13 09:22:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:29,008 INFO L225 Difference]: With dead ends: 9645 [2020-10-13 09:22:29,008 INFO L226 Difference]: Without dead ends: 6895 [2020-10-13 09:22:29,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:22:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2020-10-13 09:22:29,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 6885. [2020-10-13 09:22:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6885 states. [2020-10-13 09:22:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 7991 transitions. [2020-10-13 09:22:29,171 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 7991 transitions. Word has length 595 [2020-10-13 09:22:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:29,171 INFO L479 AbstractCegarLoop]: Abstraction has 6885 states and 7991 transitions. [2020-10-13 09:22:29,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:22:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 7991 transitions. [2020-10-13 09:22:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2020-10-13 09:22:29,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:29,195 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:29,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:22:29,196 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:29,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:29,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1277228182, now seen corresponding path program 1 times [2020-10-13 09:22:29,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:29,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843985985] [2020-10-13 09:22:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:29,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:29,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:34,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:34,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-13 09:22:34,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:22:34,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:22:34,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:22:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:22:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:34,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:34,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:34,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:34,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:34,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:22:34,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:34,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:34,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:34,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:34,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:34,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:22:34,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-13 09:22:34,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:34,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:34,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:34,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:22:34,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:22:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:22:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:22:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:22:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-13 09:22:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:35,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:35,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:22:35,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:22:35,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:22:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:35,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-13 09:22:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:35,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:35,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:35,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:22:35,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:22:35,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:22:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 114 proven. 134 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2020-10-13 09:22:35,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843985985] [2020-10-13 09:22:35,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:35,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:35,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428613584] [2020-10-13 09:22:35,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:35,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:35,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:35,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:35,526 INFO L87 Difference]: Start difference. First operand 6885 states and 7991 transitions. Second operand 7 states. [2020-10-13 09:22:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:38,816 INFO L93 Difference]: Finished difference Result 14799 states and 17284 transitions. [2020-10-13 09:22:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:22:38,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 625 [2020-10-13 09:22:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:38,848 INFO L225 Difference]: With dead ends: 14799 [2020-10-13 09:22:38,849 INFO L226 Difference]: Without dead ends: 7920 [2020-10-13 09:22:38,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:22:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7920 states. [2020-10-13 09:22:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7920 to 7910. [2020-10-13 09:22:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7910 states. [2020-10-13 09:22:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7910 states to 7910 states and 9072 transitions. [2020-10-13 09:22:39,031 INFO L78 Accepts]: Start accepts. Automaton has 7910 states and 9072 transitions. Word has length 625 [2020-10-13 09:22:39,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:39,032 INFO L479 AbstractCegarLoop]: Abstraction has 7910 states and 9072 transitions. [2020-10-13 09:22:39,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 7910 states and 9072 transitions. [2020-10-13 09:22:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-13 09:22:39,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:39,047 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:39,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:22:39,048 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:39,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1714821817, now seen corresponding path program 1 times [2020-10-13 09:22:39,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:39,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444511944] [2020-10-13 09:22:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:44,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-13 09:22:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:22:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:22:44,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 456 [2020-10-13 09:22:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:22:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:44,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:22:44,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:44,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:44,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:44,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:22:44,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:22:44,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:22:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:44,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:44,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:22:44,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:22:44,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 09:22:44,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:44,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:22:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:44,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:44,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:22:44,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:44,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-13 09:22:44,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:44,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:44,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 09:22:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-10-13 09:22:45,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444511944] [2020-10-13 09:22:45,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:45,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:45,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895250131] [2020-10-13 09:22:45,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:45,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:45,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:45,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:45,236 INFO L87 Difference]: Start difference. First operand 7910 states and 9072 transitions. Second operand 7 states. [2020-10-13 09:22:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:49,279 INFO L93 Difference]: Finished difference Result 18888 states and 21668 transitions. [2020-10-13 09:22:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:22:49,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 636 [2020-10-13 09:22:49,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:49,325 INFO L225 Difference]: With dead ends: 18888 [2020-10-13 09:22:49,325 INFO L226 Difference]: Without dead ends: 10984 [2020-10-13 09:22:49,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10984 states. [2020-10-13 09:22:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10984 to 8946. [2020-10-13 09:22:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8946 states. [2020-10-13 09:22:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8946 states to 8946 states and 10096 transitions. [2020-10-13 09:22:49,509 INFO L78 Accepts]: Start accepts. Automaton has 8946 states and 10096 transitions. Word has length 636 [2020-10-13 09:22:49,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:49,511 INFO L479 AbstractCegarLoop]: Abstraction has 8946 states and 10096 transitions. [2020-10-13 09:22:49,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8946 states and 10096 transitions. [2020-10-13 09:22:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2020-10-13 09:22:49,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:49,547 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:49,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:22:49,548 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:49,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:49,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1175640470, now seen corresponding path program 1 times [2020-10-13 09:22:49,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:49,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259924223] [2020-10-13 09:22:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:50,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:50,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 925 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:22:54,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 731 [2020-10-13 09:22:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:22:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:54,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:54,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:54,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:54,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:22:54,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:54,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:22:54,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:55,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:55,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:22:55,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:55,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 09:22:55,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:55,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:55,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:22:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:55,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:55,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:22:55,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:22:55,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:22:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:55,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:55,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:55,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:55,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 09:22:55,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:22:55,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:55,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:22:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:55,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:55,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:22:55,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 09:22:55,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 09:22:55,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 566 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2020-10-13 09:22:56,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259924223] [2020-10-13 09:22:56,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:56,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:56,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131711179] [2020-10-13 09:22:56,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:56,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:56,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:56,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:56,101 INFO L87 Difference]: Start difference. First operand 8946 states and 10096 transitions. Second operand 7 states. [2020-10-13 09:22:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:59,039 INFO L93 Difference]: Finished difference Result 17926 states and 20304 transitions. [2020-10-13 09:22:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:22:59,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 909 [2020-10-13 09:22:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:59,069 INFO L225 Difference]: With dead ends: 17926 [2020-10-13 09:22:59,069 INFO L226 Difference]: Without dead ends: 8986 [2020-10-13 09:22:59,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2020-10-13 09:22:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 8954. [2020-10-13 09:22:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8954 states. [2020-10-13 09:22:59,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8954 states to 8954 states and 9822 transitions. [2020-10-13 09:22:59,234 INFO L78 Accepts]: Start accepts. Automaton has 8954 states and 9822 transitions. Word has length 909 [2020-10-13 09:22:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:59,235 INFO L479 AbstractCegarLoop]: Abstraction has 8954 states and 9822 transitions. [2020-10-13 09:22:59,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8954 states and 9822 transitions. [2020-10-13 09:22:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2020-10-13 09:22:59,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:59,263 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:59,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:22:59,264 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:59,264 INFO L82 PathProgramCache]: Analyzing trace with hash 509543050, now seen corresponding path program 1 times [2020-10-13 09:22:59,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:59,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067375477] [2020-10-13 09:22:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:04,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-13 09:23:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:23:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-13 09:23:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 731 [2020-10-13 09:23:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:23:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:04,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:04,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:04,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:04,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:04,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:04,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:04,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:04,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:23:04,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:04,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:23:04,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:04,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:23:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:04,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:04,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:04,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:23:04,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:04,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:23:04,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:04,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:23:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:05,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:05,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:23:05,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-13 09:23:05,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:23:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:05,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:23:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:05,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:05,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:23:05,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:23:05,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:23:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-13 09:23:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:05,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:23:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:23:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-13 09:23:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 276 proven. 70 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2020-10-13 09:23:06,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067375477] [2020-10-13 09:23:06,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:06,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:23:06,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90877416] [2020-10-13 09:23:06,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:23:06,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:06,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:23:06,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:06,123 INFO L87 Difference]: Start difference. First operand 8954 states and 9822 transitions. Second operand 7 states. [2020-10-13 09:23:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:09,534 INFO L93 Difference]: Finished difference Result 18946 states and 20876 transitions. [2020-10-13 09:23:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:23:09,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1059 [2020-10-13 09:23:09,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:09,572 INFO L225 Difference]: With dead ends: 18946 [2020-10-13 09:23:09,572 INFO L226 Difference]: Without dead ends: 9998 [2020-10-13 09:23:09,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:23:09,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9998 states. [2020-10-13 09:23:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9998 to 9984. [2020-10-13 09:23:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9984 states. [2020-10-13 09:23:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9984 states to 9984 states and 10897 transitions. [2020-10-13 09:23:09,737 INFO L78 Accepts]: Start accepts. Automaton has 9984 states and 10897 transitions. Word has length 1059 [2020-10-13 09:23:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:09,738 INFO L479 AbstractCegarLoop]: Abstraction has 9984 states and 10897 transitions. [2020-10-13 09:23:09,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:23:09,738 INFO L276 IsEmpty]: Start isEmpty. Operand 9984 states and 10897 transitions. [2020-10-13 09:23:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2020-10-13 09:23:09,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:09,773 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:23:09,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:23:09,773 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:09,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2132579334, now seen corresponding path program 1 times [2020-10-13 09:23:09,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:09,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718449097] [2020-10-13 09:23:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:10,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:10,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1161 [2020-10-13 09:23:15,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:23:15,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 09:23:15,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:23:15,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:23:15,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:15,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:15,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:23:15,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:23:15,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:23:15,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:23:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:23:15,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:23:15,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:23:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-13 09:23:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:23:15,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:23:15,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:23:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-13 09:23:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:23:15,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:23:15,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:23:15,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-10-13 09:23:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:23:15,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:23:15,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:23:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2020-10-13 09:23:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:23:15,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:23:15,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:23:15,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 955 [2020-10-13 09:23:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:23:15,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:23:15,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:23:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 157 proven. 337 refuted. 0 times theorem prover too weak. 2122 trivial. 0 not checked. [2020-10-13 09:23:16,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718449097] [2020-10-13 09:23:16,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:16,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:23:16,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052106460] [2020-10-13 09:23:16,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:23:16,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:16,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:23:16,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:16,525 INFO L87 Difference]: Start difference. First operand 9984 states and 10897 transitions. Second operand 7 states. [2020-10-13 09:23:20,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:20,245 INFO L93 Difference]: Finished difference Result 25564 states and 28881 transitions. [2020-10-13 09:23:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:23:20,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1139 [2020-10-13 09:23:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:20,285 INFO L225 Difference]: With dead ends: 25564 [2020-10-13 09:23:20,285 INFO L226 Difference]: Without dead ends: 15586 [2020-10-13 09:23:20,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:23:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15586 states. [2020-10-13 09:23:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15586 to 15406. [2020-10-13 09:23:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15406 states. [2020-10-13 09:23:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15406 states to 15406 states and 16780 transitions. [2020-10-13 09:23:20,595 INFO L78 Accepts]: Start accepts. Automaton has 15406 states and 16780 transitions. Word has length 1139 [2020-10-13 09:23:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:20,596 INFO L479 AbstractCegarLoop]: Abstraction has 15406 states and 16780 transitions. [2020-10-13 09:23:20,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:23:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand 15406 states and 16780 transitions. [2020-10-13 09:23:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2020-10-13 09:23:20,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:20,657 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:23:20,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:23:20,658 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:20,658 INFO L82 PathProgramCache]: Analyzing trace with hash -634758477, now seen corresponding path program 1 times [2020-10-13 09:23:20,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:20,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407076871] [2020-10-13 09:23:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:21,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:25,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:25,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1272 [2020-10-13 09:23:25,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:23:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 09:23:25,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 926 [2020-10-13 09:23:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:23:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:26,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:26,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:26,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:26,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:26,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:26,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:26,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:26,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:26,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:26,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:23:26,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:23:26,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:26,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:23:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:26,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:26,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:23:26,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:26,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:23:26,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:26,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:26,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:26,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:26,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:23:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:26,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:26,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:26,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:23:26,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:23:26,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:26,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-13 09:23:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:26,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:26,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:23:26,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:26,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:23:26,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:23:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:26,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-13 09:23:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:26,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:26,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:26,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:23:26,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:26,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:23:26,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:23:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:26,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 989 [2020-10-13 09:23:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:26,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:26,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:23:26,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:26,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:23:26,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-13 09:23:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:26,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2391 backedges. 363 proven. 70 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2020-10-13 09:23:27,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407076871] [2020-10-13 09:23:27,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:27,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:23:27,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003239990] [2020-10-13 09:23:27,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:23:27,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:27,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:23:27,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:27,746 INFO L87 Difference]: Start difference. First operand 15406 states and 16780 transitions. Second operand 7 states. [2020-10-13 09:23:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:30,719 INFO L93 Difference]: Finished difference Result 31484 states and 34384 transitions. [2020-10-13 09:23:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:23:30,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1252 [2020-10-13 09:23:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:30,756 INFO L225 Difference]: With dead ends: 31484 [2020-10-13 09:23:30,757 INFO L226 Difference]: Without dead ends: 16421 [2020-10-13 09:23:30,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:23:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16421 states. [2020-10-13 09:23:30,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16421 to 16084. [2020-10-13 09:23:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16084 states. [2020-10-13 09:23:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16084 states to 16084 states and 17581 transitions. [2020-10-13 09:23:31,008 INFO L78 Accepts]: Start accepts. Automaton has 16084 states and 17581 transitions. Word has length 1252 [2020-10-13 09:23:31,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:31,010 INFO L479 AbstractCegarLoop]: Abstraction has 16084 states and 17581 transitions. [2020-10-13 09:23:31,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:23:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 16084 states and 17581 transitions. [2020-10-13 09:23:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2020-10-13 09:23:31,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:31,049 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:23:31,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:23:31,050 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:31,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:31,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1612299630, now seen corresponding path program 1 times [2020-10-13 09:23:31,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:31,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089600078] [2020-10-13 09:23:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:31,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1281 [2020-10-13 09:23:36,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:23:36,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 09:23:36,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:23:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:23:36,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:23:36,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:36,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:36,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:23:36,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:23:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:36,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:23:36,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:23:36,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:23:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:36,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:23:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 09:23:36,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:23:36,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-13 09:23:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:36,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-13 09:23:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:23:36,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:23:36,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-13 09:23:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-13 09:23:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:23:36,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:23:36,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:23:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2020-10-13 09:23:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:23:36,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:23:36,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 09:23:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:36,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2020-10-13 09:23:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:23:36,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:23:36,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:23:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 858 [2020-10-13 09:23:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:23:36,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:23:36,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:36,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:23:36,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:36,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1073 [2020-10-13 09:23:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:37,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:37,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:37,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:23:37,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:23:37,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:23:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:37,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3680 backedges. 80 proven. 665 refuted. 0 times theorem prover too weak. 2935 trivial. 0 not checked. [2020-10-13 09:23:37,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089600078] [2020-10-13 09:23:37,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:37,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:23:37,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207400464] [2020-10-13 09:23:37,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:23:37,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:37,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:23:37,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:37,865 INFO L87 Difference]: Start difference. First operand 16084 states and 17581 transitions. Second operand 7 states. [2020-10-13 09:23:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:40,583 INFO L93 Difference]: Finished difference Result 32166 states and 35154 transitions. [2020-10-13 09:23:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:23:40,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1257 [2020-10-13 09:23:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:40,620 INFO L225 Difference]: With dead ends: 32166 [2020-10-13 09:23:40,621 INFO L226 Difference]: Without dead ends: 16425 [2020-10-13 09:23:40,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:23:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16425 states. [2020-10-13 09:23:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16425 to 16086. [2020-10-13 09:23:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16086 states. [2020-10-13 09:23:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16086 states to 16086 states and 17576 transitions. [2020-10-13 09:23:40,891 INFO L78 Accepts]: Start accepts. Automaton has 16086 states and 17576 transitions. Word has length 1257 [2020-10-13 09:23:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:40,891 INFO L479 AbstractCegarLoop]: Abstraction has 16086 states and 17576 transitions. [2020-10-13 09:23:40,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:23:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 16086 states and 17576 transitions. [2020-10-13 09:23:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1482 [2020-10-13 09:23:40,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:40,928 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:23:40,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:23:40,928 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:40,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:40,929 INFO L82 PathProgramCache]: Analyzing trace with hash -938865110, now seen corresponding path program 1 times [2020-10-13 09:23:40,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:40,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067926562] [2020-10-13 09:23:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:41,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:41,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:46,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:46,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1507 [2020-10-13 09:23:46,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:23:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 09:23:46,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:46,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:46,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 677 [2020-10-13 09:23:46,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:23:46,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:46,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:46,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:46,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:46,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:46,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:23:46,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:23:46,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:46,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:46,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:23:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:46,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:46,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:23:46,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:46,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:23:46,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:46,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:46,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-13 09:23:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:46,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:46,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:23:46,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:46,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:23:46,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:46,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:46,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:46,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:46,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-13 09:23:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:46,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:46,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:23:46,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:46,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:23:46,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:23:46,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:46,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-13 09:23:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:46,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:46,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:23:46,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:46,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:23:46,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:23:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:46,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-13 09:23:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:46,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:46,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:46,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:23:46,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:46,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:23:46,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:23:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:46,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:46,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 972 [2020-10-13 09:23:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:46,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:46,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:46,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:23:46,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:23:46,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:23:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:46,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:46,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1082 [2020-10-13 09:23:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:46,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:47,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:47,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:23:47,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:47,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:23:47,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:23:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-13 09:23:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:47,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:47,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:47,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:23:47,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:23:47,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:23:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4672 backedges. 572 proven. 445 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2020-10-13 09:23:48,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067926562] [2020-10-13 09:23:48,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:48,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:23:48,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357973627] [2020-10-13 09:23:48,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:23:48,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:23:48,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:48,097 INFO L87 Difference]: Start difference. First operand 16086 states and 17576 transitions. Second operand 7 states. [2020-10-13 09:23:53,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:53,083 INFO L93 Difference]: Finished difference Result 36234 states and 39645 transitions. [2020-10-13 09:23:53,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:23:53,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1481 [2020-10-13 09:23:53,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:53,132 INFO L225 Difference]: With dead ends: 36234 [2020-10-13 09:23:53,132 INFO L226 Difference]: Without dead ends: 20493 [2020-10-13 09:23:53,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:23:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20493 states. [2020-10-13 09:23:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20493 to 19815. [2020-10-13 09:23:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19815 states. [2020-10-13 09:23:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19815 states to 19815 states and 21613 transitions. [2020-10-13 09:23:53,443 INFO L78 Accepts]: Start accepts. Automaton has 19815 states and 21613 transitions. Word has length 1481 [2020-10-13 09:23:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:53,443 INFO L479 AbstractCegarLoop]: Abstraction has 19815 states and 21613 transitions. [2020-10-13 09:23:53,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:23:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 19815 states and 21613 transitions. [2020-10-13 09:23:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1518 [2020-10-13 09:23:53,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:53,481 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:23:53,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:23:53,481 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:53,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1499641698, now seen corresponding path program 1 times [2020-10-13 09:23:53,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:53,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912864315] [2020-10-13 09:23:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:58,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:58,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1541 [2020-10-13 09:23:58,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:23:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 09:23:58,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 828 [2020-10-13 09:23:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 09:23:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:58,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:58,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:58,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:58,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:58,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:23:58,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:58,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:58,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:58,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:58,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:23:58,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:23:58,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:23:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:58,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:58,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:23:58,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:58,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:23:58,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:23:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:59,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:59,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-13 09:23:59,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:23:59,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-13 09:23:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:59,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:59,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:23:59,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:59,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:23:59,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:23:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:59,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 820 [2020-10-13 09:23:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:59,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:59,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:23:59,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:59,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 09:23:59,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:59,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:59,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 09:23:59,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:59,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1008 [2020-10-13 09:23:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:59,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:59,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:23:59,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:23:59,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:23:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:59,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1118 [2020-10-13 09:23:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:59,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:59,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:23:59,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:23:59,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:23:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1333 [2020-10-13 09:23:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:59,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:59,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:23:59,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:59,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:23:59,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:59,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:59,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:23:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:59,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4447 backedges. 810 proven. 466 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2020-10-13 09:24:00,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912864315] [2020-10-13 09:24:00,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:00,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:00,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288681471] [2020-10-13 09:24:00,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:00,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:00,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:00,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:00,721 INFO L87 Difference]: Start difference. First operand 19815 states and 21613 transitions. Second operand 7 states. [2020-10-13 09:24:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:04,452 INFO L93 Difference]: Finished difference Result 43352 states and 47297 transitions. [2020-10-13 09:24:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:24:04,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1517 [2020-10-13 09:24:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:04,491 INFO L225 Difference]: With dead ends: 43352 [2020-10-13 09:24:04,492 INFO L226 Difference]: Without dead ends: 23882 [2020-10-13 09:24:04,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:24:04,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23882 states. [2020-10-13 09:24:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23882 to 23876. [2020-10-13 09:24:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23876 states. [2020-10-13 09:24:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23876 states to 23876 states and 25884 transitions. [2020-10-13 09:24:04,846 INFO L78 Accepts]: Start accepts. Automaton has 23876 states and 25884 transitions. Word has length 1517 [2020-10-13 09:24:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:04,847 INFO L479 AbstractCegarLoop]: Abstraction has 23876 states and 25884 transitions. [2020-10-13 09:24:04,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 23876 states and 25884 transitions. [2020-10-13 09:24:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1523 [2020-10-13 09:24:04,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:04,885 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:04,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:24:04,886 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:04,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:04,886 INFO L82 PathProgramCache]: Analyzing trace with hash -258253977, now seen corresponding path program 1 times [2020-10-13 09:24:04,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:04,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517755638] [2020-10-13 09:24:04,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:05,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:10,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:10,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1548 [2020-10-13 09:24:10,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:24:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5252 [2020-10-13 09:24:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1025 [2020-10-13 09:24:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:24:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:10,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:10,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:10,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:10,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:10,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:10,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:10,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:10,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:10,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:10,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:24:10,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:10,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:24:10,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:24:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:10,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:10,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:24:10,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:10,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:24:10,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:10,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:10,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:10,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:10,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-13 09:24:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:10,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:10,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 09:24:10,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:24:10,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:10,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:11,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-13 09:24:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:11,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:11,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 09:24:11,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:24:11,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:11,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:11,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-13 09:24:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:11,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:11,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:24:11,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:11,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:24:11,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:11,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:11,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:11,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 871 [2020-10-13 09:24:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:11,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:11,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:24:11,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:24:11,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 09:24:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1013 [2020-10-13 09:24:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:11,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:11,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:11,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:11,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:24:11,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:24:11,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:11,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1123 [2020-10-13 09:24:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:11,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:11,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:24:11,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:24:11,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:24:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:11,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1338 [2020-10-13 09:24:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:12,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:12,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:24:12,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:24:12,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:24:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5018 backedges. 795 proven. 216 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2020-10-13 09:24:13,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517755638] [2020-10-13 09:24:13,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:13,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:13,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878984682] [2020-10-13 09:24:13,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:13,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:13,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:13,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:13,743 INFO L87 Difference]: Start difference. First operand 23876 states and 25884 transitions. Second operand 7 states. [2020-10-13 09:24:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:17,817 INFO L93 Difference]: Finished difference Result 49775 states and 54170 transitions. [2020-10-13 09:24:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:24:17,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1522 [2020-10-13 09:24:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:17,870 INFO L225 Difference]: With dead ends: 49775 [2020-10-13 09:24:17,870 INFO L226 Difference]: Without dead ends: 26244 [2020-10-13 09:24:17,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:24:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26244 states. [2020-10-13 09:24:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26244 to 25570. [2020-10-13 09:24:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25570 states. [2020-10-13 09:24:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25570 states to 25570 states and 27704 transitions. [2020-10-13 09:24:18,208 INFO L78 Accepts]: Start accepts. Automaton has 25570 states and 27704 transitions. Word has length 1522 [2020-10-13 09:24:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:18,209 INFO L479 AbstractCegarLoop]: Abstraction has 25570 states and 27704 transitions. [2020-10-13 09:24:18,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 25570 states and 27704 transitions. [2020-10-13 09:24:18,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1561 [2020-10-13 09:24:18,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:18,246 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:18,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:24:18,247 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:18,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:18,247 INFO L82 PathProgramCache]: Analyzing trace with hash -822534449, now seen corresponding path program 1 times [2020-10-13 09:24:18,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:18,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928160660] [2020-10-13 09:24:18,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:19,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:20,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:23,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1584 [2020-10-13 09:24:23,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:24:23,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-13 09:24:23,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1390 [2020-10-13 09:24:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:24:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:23,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:23,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:24:23,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:23,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:24:23,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:23,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:24:23,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:23,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:24:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:23,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:23,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:24:23,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:24:23,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:23,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:23,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:24:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:24:23,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:24:23,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:24,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:24:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:24,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:24,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:24:24,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:24:24,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 863 [2020-10-13 09:24:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:24,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:24,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:24:24,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:24,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:24:24,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:24,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1051 [2020-10-13 09:24:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:24,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:24,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:24,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:24,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:24:24,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:24,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1161 [2020-10-13 09:24:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:24,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:24:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:24:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 09:24:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:24,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1376 [2020-10-13 09:24:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:24,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:24,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:24:24,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:24:24,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 09:24:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4336 backedges. 1157 proven. 2 refuted. 0 times theorem prover too weak. 3177 trivial. 0 not checked. [2020-10-13 09:24:25,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928160660] [2020-10-13 09:24:25,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:25,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:24:25,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784275383] [2020-10-13 09:24:25,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:24:25,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:25,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:24:25,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:24:25,677 INFO L87 Difference]: Start difference. First operand 25570 states and 27704 transitions. Second operand 8 states. [2020-10-13 09:24:30,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:30,363 INFO L93 Difference]: Finished difference Result 52512 states and 56891 transitions. [2020-10-13 09:24:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:24:30,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1560 [2020-10-13 09:24:30,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:30,413 INFO L225 Difference]: With dead ends: 52512 [2020-10-13 09:24:30,413 INFO L226 Difference]: Without dead ends: 27287 [2020-10-13 09:24:30,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:24:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27287 states. [2020-10-13 09:24:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27287 to 26613. [2020-10-13 09:24:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26613 states. [2020-10-13 09:24:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26613 states to 26613 states and 28428 transitions. [2020-10-13 09:24:30,787 INFO L78 Accepts]: Start accepts. Automaton has 26613 states and 28428 transitions. Word has length 1560 [2020-10-13 09:24:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:30,789 INFO L479 AbstractCegarLoop]: Abstraction has 26613 states and 28428 transitions. [2020-10-13 09:24:30,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:24:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 26613 states and 28428 transitions. [2020-10-13 09:24:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1601 [2020-10-13 09:24:30,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:30,836 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:30,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:24:30,836 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash 917993595, now seen corresponding path program 1 times [2020-10-13 09:24:30,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:30,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793090795] [2020-10-13 09:24:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:31,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:36,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:36,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1620 [2020-10-13 09:24:36,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:24:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:24:36,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:24:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:24:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:36,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:36,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:36,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:36,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:36,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:36,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:24:36,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:36,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:24:36,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-13 09:24:36,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:36,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:24:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:36,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:36,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:24:36,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:36,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 09:24:36,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:24:36,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:24:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:37,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:37,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:24:37,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:37,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:24:37,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:24:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:37,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:37,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:24:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:37,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:37,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:24:37,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:37,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:24:37,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:37,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:24:37,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:37,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:37,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:24:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:37,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:37,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 09:24:37,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:24:37,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-13 09:24:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1337 [2020-10-13 09:24:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:37,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:37,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:37,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:24:37,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:24:37,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:37,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:37,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-13 09:24:37,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 320 proven. 986 refuted. 0 times theorem prover too weak. 2569 trivial. 0 not checked. [2020-10-13 09:24:39,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793090795] [2020-10-13 09:24:39,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:39,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:39,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269161727] [2020-10-13 09:24:39,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:39,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:39,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:39,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:39,864 INFO L87 Difference]: Start difference. First operand 26613 states and 28428 transitions. Second operand 7 states. [2020-10-13 09:24:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:42,744 INFO L93 Difference]: Finished difference Result 52881 states and 56508 transitions. [2020-10-13 09:24:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:24:42,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1600 [2020-10-13 09:24:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:42,786 INFO L225 Difference]: With dead ends: 52881 [2020-10-13 09:24:42,786 INFO L226 Difference]: Without dead ends: 26613 [2020-10-13 09:24:42,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:24:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26613 states. [2020-10-13 09:24:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26613 to 26613. [2020-10-13 09:24:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26613 states. [2020-10-13 09:24:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26613 states to 26613 states and 28426 transitions. [2020-10-13 09:24:43,153 INFO L78 Accepts]: Start accepts. Automaton has 26613 states and 28426 transitions. Word has length 1600 [2020-10-13 09:24:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:43,154 INFO L479 AbstractCegarLoop]: Abstraction has 26613 states and 28426 transitions. [2020-10-13 09:24:43,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 26613 states and 28426 transitions. [2020-10-13 09:24:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1617 [2020-10-13 09:24:43,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:43,182 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 5, 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, 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] [2020-10-13 09:24:43,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:24:43,183 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:43,184 INFO L82 PathProgramCache]: Analyzing trace with hash 352042451, now seen corresponding path program 1 times [2020-10-13 09:24:43,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:43,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45111811] [2020-10-13 09:24:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:43,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:46,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1638 [2020-10-13 09:24:48,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:24:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:24:48,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-13 09:24:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:24:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:48,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:48,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:24:48,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:48,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:24:48,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:24:48,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:24:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:24:48,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:24:48,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-13 09:24:48,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:49,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-13 09:24:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:49,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:49,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:24:49,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-13 09:24:49,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:24:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-13 09:24:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:49,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:49,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:49,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:24:49,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:49,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:24:49,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:49,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:24:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:49,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-13 09:24:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:49,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:49,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:24:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 09:24:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:24:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:49,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-13 09:24:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:50,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:50,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:50,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 09:24:50,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:24:50,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-13 09:24:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:50,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1353 [2020-10-13 09:24:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:50,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:50,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:24:50,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:24:50,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-13 09:24:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4217 backedges. 359 proven. 506 refuted. 0 times theorem prover too weak. 3352 trivial. 0 not checked. [2020-10-13 09:24:51,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45111811] [2020-10-13 09:24:51,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:51,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:24:51,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881117379] [2020-10-13 09:24:51,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:24:51,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:51,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:24:51,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:24:51,712 INFO L87 Difference]: Start difference. First operand 26613 states and 28426 transitions. Second operand 8 states.