/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:18:15,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:18:15,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:18:15,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:18:15,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:18:15,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:18:15,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:18:15,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:18:15,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:18:15,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:18:15,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:18:15,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:18:15,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:18:15,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:18:15,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:18:15,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:18:15,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:18:15,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:18:15,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:18:15,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:18:15,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:18:15,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:18:15,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:18:15,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:18:15,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:18:15,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:18:15,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:18:15,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:18:15,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:18:15,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:18:15,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:18:15,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:18:15,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:18:15,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:18:15,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:18:15,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:18:15,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:18:15,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:18:15,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:18:15,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:18:15,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:18:15,610 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:18:15,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:18:15,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:18:15,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:18:15,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:18:15,656 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:18:15,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:18:15,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:18:15,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:18:15,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:18:15,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:18:15,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:18:15,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:18:15,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:18:15,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:18:15,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:18:15,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:18:15,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:18:15,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:18:15,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:18:15,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:18:15,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:18:15,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:18:15,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:18:15,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:18:15,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:18:15,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:18:15,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:18:15,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:18:15,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:18:15,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:18:16,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:18:16,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:18:16,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:18:16,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:18:16,155 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:18:16,156 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-24 19:18:16,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c51b0351b/ae49c879988f4d3ea46aaefcfc0186d3/FLAGd7c587cdf [2020-09-24 19:18:16,711 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:18:16,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-24 19:18:16,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c51b0351b/ae49c879988f4d3ea46aaefcfc0186d3/FLAGd7c587cdf [2020-09-24 19:18:17,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c51b0351b/ae49c879988f4d3ea46aaefcfc0186d3 [2020-09-24 19:18:17,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:18:17,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:18:17,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:18:17,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:18:17,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:18:17,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:18:17" (1/1) ... [2020-09-24 19:18:17,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17, skipping insertion in model container [2020-09-24 19:18:17,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:18:17" (1/1) ... [2020-09-24 19:18:17,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:18:17,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:18:17,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:18:17,403 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:18:17,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:18:17,435 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:18:17,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17 WrapperNode [2020-09-24 19:18:17,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:18:17,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:18:17,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:18:17,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:18:17,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17" (1/1) ... [2020-09-24 19:18:17,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17" (1/1) ... [2020-09-24 19:18:17,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17" (1/1) ... [2020-09-24 19:18:17,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17" (1/1) ... [2020-09-24 19:18:17,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17" (1/1) ... [2020-09-24 19:18:17,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17" (1/1) ... [2020-09-24 19:18:17,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17" (1/1) ... [2020-09-24 19:18:17,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:18:17,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:18:17,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:18:17,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:18:17,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:18:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:18:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:18:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-09-24 19:18:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:18:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:18:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:18:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-09-24 19:18:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:18:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:18:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:18:17,892 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:18:17,893 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:18:17,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:18:17 BoogieIcfgContainer [2020-09-24 19:18:17,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:18:17,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:18:17,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:18:17,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:18:17,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:18:17" (1/3) ... [2020-09-24 19:18:17,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e91a86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:18:17, skipping insertion in model container [2020-09-24 19:18:17,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:18:17" (2/3) ... [2020-09-24 19:18:17,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e91a86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:18:17, skipping insertion in model container [2020-09-24 19:18:17,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:18:17" (3/3) ... [2020-09-24 19:18:17,911 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-09-24 19:18:17,923 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:18:17,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:18:17,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:18:18,000 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:18:18,000 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:18:18,001 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:18:18,001 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:18:18,001 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:18:18,001 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:18:18,001 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:18:18,002 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:18:18,028 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 19:18:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 19:18:18,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:18,038 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:18:18,038 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:18,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:18,045 INFO L82 PathProgramCache]: Analyzing trace with hash 2060884630, now seen corresponding path program 1 times [2020-09-24 19:18:18,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:18,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346546737] [2020-09-24 19:18:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:18:19,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:18:19,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:18:19,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:18:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:19,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:19,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:19,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:19,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:19,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:18:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:18:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:19,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:18:19,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:18:19,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:18:19,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 19:18:19,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346546737] [2020-09-24 19:18:19,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:19,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:18:19,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140949176] [2020-09-24 19:18:19,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:18:19,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:19,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:18:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:19,397 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 19:18:19,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:19,538 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-09-24 19:18:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:18:19,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-24 19:18:19,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:19,554 INFO L225 Difference]: With dead ends: 67 [2020-09-24 19:18:19,554 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 19:18:19,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:19,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 19:18:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-24 19:18:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 19:18:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-24 19:18:19,618 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 36 [2020-09-24 19:18:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:19,619 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-24 19:18:19,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:18:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-24 19:18:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 19:18:19,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:19,623 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:18:19,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:18:19,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1309951713, now seen corresponding path program 1 times [2020-09-24 19:18:19,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:19,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473169644] [2020-09-24 19:18:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 19:18:19,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 19:18:19,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 19:18:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:18:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:19,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:19,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:19,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:19,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:19,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:18:19,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:19,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:19,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:19,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:19,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 19:18:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:19,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:18:19,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:19,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 19:18:19,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473169644] [2020-09-24 19:18:19,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:18:19,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:18:19,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405277858] [2020-09-24 19:18:19,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:18:19,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:19,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:18:19,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:19,874 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2020-09-24 19:18:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:19,940 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-09-24 19:18:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:18:19,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-24 19:18:19,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:19,942 INFO L225 Difference]: With dead ends: 49 [2020-09-24 19:18:19,942 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 19:18:19,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:19,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 19:18:19,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-24 19:18:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 19:18:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-09-24 19:18:19,957 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 46 [2020-09-24 19:18:19,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:19,957 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-09-24 19:18:19,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:18:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-09-24 19:18:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 19:18:19,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:19,962 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-09-24 19:18:19,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:18:19,965 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:19,965 INFO L82 PathProgramCache]: Analyzing trace with hash -793708719, now seen corresponding path program 1 times [2020-09-24 19:18:19,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:19,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539960822] [2020-09-24 19:18:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:20,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:20,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:18:20,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:18:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:18:20,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 19:18:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:18:21,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:21,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:21,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:21,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:21,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:21,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:18:21,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:21,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:21,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:21,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:18:21,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 19:18:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:18:21,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:18:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-09-24 19:18:21,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:18:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:18:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:21,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:18:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:18:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:18:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:21,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:18:21,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-24 19:18:21,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539960822] [2020-09-24 19:18:21,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:21,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:18:21,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536249748] [2020-09-24 19:18:21,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:18:21,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:21,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:18:21,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:21,732 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2020-09-24 19:18:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:21,852 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-09-24 19:18:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:18:21,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-24 19:18:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:21,857 INFO L225 Difference]: With dead ends: 53 [2020-09-24 19:18:21,857 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 19:18:21,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 19:18:21,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-24 19:18:21,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 19:18:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-24 19:18:21,878 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 65 [2020-09-24 19:18:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:21,878 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-24 19:18:21,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:18:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-24 19:18:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 19:18:21,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:21,885 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-09-24 19:18:21,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:18:21,885 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:21,889 INFO L82 PathProgramCache]: Analyzing trace with hash 942191350, now seen corresponding path program 2 times [2020-09-24 19:18:21,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:21,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105796122] [2020-09-24 19:18:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:22,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:18:22,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-24 19:18:22,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:18:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 19:18:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:22,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:22,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:22,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:22,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 19:18:22,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:18:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:22,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:22,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:22,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:22,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:18:22,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:18:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 19:18:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:22,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:22,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:18:22,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:22,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:23,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:23,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:23,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 19:18:23,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:23,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 19:18:23,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105796122] [2020-09-24 19:18:23,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:23,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 19:18:23,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147215492] [2020-09-24 19:18:23,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 19:18:23,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:23,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 19:18:23,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:18:23,301 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 16 states. [2020-09-24 19:18:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:23,983 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-09-24 19:18:23,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:18:23,984 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-09-24 19:18:23,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:23,986 INFO L225 Difference]: With dead ends: 68 [2020-09-24 19:18:23,986 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 19:18:23,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2020-09-24 19:18:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 19:18:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-24 19:18:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 19:18:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-09-24 19:18:24,000 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 56 [2020-09-24 19:18:24,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:24,001 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-09-24 19:18:24,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 19:18:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-09-24 19:18:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 19:18:24,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:24,003 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-09-24 19:18:24,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:18:24,003 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:24,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:24,004 INFO L82 PathProgramCache]: Analyzing trace with hash -156864787, now seen corresponding path program 2 times [2020-09-24 19:18:24,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:24,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602045555] [2020-09-24 19:18:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:24,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:25,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:18:25,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:18:25,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:18:25,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 19:18:25,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:18:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:25,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:25,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:25,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:25,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:25,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:25,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:25,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:25,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:25,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:18:25,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:25,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:25,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:25,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:25,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:18:25,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:25,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:25,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 19:18:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:25,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:25,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:18:25,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-24 19:18:25,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:18:25,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:25,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:25,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:25,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:18:25,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:18:25,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 19:18:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:18:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:18:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:25,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:25,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:25,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:18:25,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:18:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 19:18:25,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602045555] [2020-09-24 19:18:25,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:18:25,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:18:25,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962618779] [2020-09-24 19:18:25,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:18:25,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:25,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:18:25,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:25,357 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 5 states. [2020-09-24 19:18:25,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:25,420 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2020-09-24 19:18:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:18:25,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-24 19:18:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:25,422 INFO L225 Difference]: With dead ends: 90 [2020-09-24 19:18:25,422 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 19:18:25,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:18:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 19:18:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 19:18:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 19:18:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-24 19:18:25,433 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 65 [2020-09-24 19:18:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:25,433 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-24 19:18:25,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:18:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-24 19:18:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 19:18:25,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:25,435 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2020-09-24 19:18:25,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:18:25,435 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:25,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:25,436 INFO L82 PathProgramCache]: Analyzing trace with hash 387973505, now seen corresponding path program 3 times [2020-09-24 19:18:25,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:25,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678736425] [2020-09-24 19:18:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:25,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:18:26,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 812 [2020-09-24 19:18:26,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 19:18:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:18:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:26,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:26,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:26,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:26,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:18:26,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:18:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:26,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:18:26,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 19:18:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 19:18:26,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:18:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:27,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:27,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:27,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 19:18:27,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:27,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:27,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:27,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:27,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:27,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:18:27,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-24 19:18:27,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678736425] [2020-09-24 19:18:27,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:27,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 19:18:27,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016848674] [2020-09-24 19:18:27,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 19:18:27,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:27,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 19:18:27,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:18:27,191 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 18 states. [2020-09-24 19:18:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:27,836 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2020-09-24 19:18:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:18:27,836 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-24 19:18:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:27,838 INFO L225 Difference]: With dead ends: 68 [2020-09-24 19:18:27,838 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 19:18:27,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-09-24 19:18:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 19:18:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-24 19:18:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 19:18:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-09-24 19:18:27,849 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 66 [2020-09-24 19:18:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:27,849 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-09-24 19:18:27,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 19:18:27,850 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-09-24 19:18:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 19:18:27,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:27,851 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:27,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:18:27,851 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:27,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:27,852 INFO L82 PathProgramCache]: Analyzing trace with hash 681092950, now seen corresponding path program 4 times [2020-09-24 19:18:27,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:27,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309666599] [2020-09-24 19:18:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:28,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:28,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 19:18:28,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:28,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:18:28,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 19:18:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:28,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:18:28,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:28,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:28,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:28,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:28,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:28,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:28,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:28,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:28,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:28,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:28,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:28,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:28,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:28,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:18:28,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:18:28,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:28,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:28,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:29,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:29,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:29,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:29,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:29,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:18:29,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:29,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 19:18:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:29,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:29,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:29,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:18:29,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-24 19:18:29,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 19:18:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:18:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:29,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:29,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:29,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:29,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:29,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:29,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-24 19:18:29,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:18:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:29,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:29,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:29,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:29,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:29,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 19:18:29,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:29,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:30,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:30,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:30,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:18:30,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:30,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-24 19:18:30,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309666599] [2020-09-24 19:18:30,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:30,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 19:18:30,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194845163] [2020-09-24 19:18:30,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 19:18:30,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:30,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 19:18:30,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:18:30,092 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 19 states. [2020-09-24 19:18:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:30,771 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2020-09-24 19:18:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:18:30,772 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 76 [2020-09-24 19:18:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:30,773 INFO L225 Difference]: With dead ends: 73 [2020-09-24 19:18:30,773 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 19:18:30,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 19:18:30,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 19:18:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2020-09-24 19:18:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 19:18:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-09-24 19:18:30,790 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 76 [2020-09-24 19:18:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:30,790 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-09-24 19:18:30,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 19:18:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-09-24 19:18:30,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 19:18:30,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:30,792 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 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] [2020-09-24 19:18:30,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:18:30,793 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:30,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:30,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1957858366, now seen corresponding path program 3 times [2020-09-24 19:18:30,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:30,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479607749] [2020-09-24 19:18:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:30,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:31,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 19:18:31,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:18:31,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:18:31,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:18:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:18:31,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:31,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:31,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:31,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:31,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:31,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:31,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:18:31,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:31,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:31,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:31,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:31,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:31,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:31,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 19:18:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:32,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:32,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 19:18:32,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:18:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-09-24 19:18:32,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 19:18:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:18:32,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:32,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:32,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:32,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:33,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:33,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:18:33,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:18:33,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-09-24 19:18:33,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:18:33,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:18:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:33,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:33,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:33,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:33,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:18:33,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:18:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:18:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:33,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:33,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:33,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:33,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:33,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-24 19:18:33,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479607749] [2020-09-24 19:18:33,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:33,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:18:33,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342192109] [2020-09-24 19:18:33,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:18:33,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:33,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:18:33,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:33,292 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 6 states. [2020-09-24 19:18:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:33,413 INFO L93 Difference]: Finished difference Result 95 states and 122 transitions. [2020-09-24 19:18:33,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:18:33,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-09-24 19:18:33,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:33,417 INFO L225 Difference]: With dead ends: 95 [2020-09-24 19:18:33,418 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 19:18:33,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:18:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 19:18:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-09-24 19:18:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 19:18:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-09-24 19:18:33,432 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 75 [2020-09-24 19:18:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:33,433 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-09-24 19:18:33,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:18:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-09-24 19:18:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 19:18:33,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:33,436 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:33,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:18:33,437 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash -972388074, now seen corresponding path program 5 times [2020-09-24 19:18:33,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:33,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037061439] [2020-09-24 19:18:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:33,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:34,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 19:18:34,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:18:34,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 19:18:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:18:34,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:34,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:34,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:34,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:34,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:34,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:34,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:34,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:34,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:34,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:34,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:34,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:34,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:34,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:34,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 19:18:34,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:18:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:34,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:34,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:34,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:34,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:34,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 19:18:34,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:34,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:34,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:34,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:34,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:34,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:18:34,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:34,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:34,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:35,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 19:18:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:35,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:35,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-24 19:18:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:18:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:35,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:35,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:35,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:35,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 19:18:35,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:35,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:35,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:35,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:35,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:18:35,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 80 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 19:18:35,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037061439] [2020-09-24 19:18:35,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:35,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 19:18:35,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960102821] [2020-09-24 19:18:35,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 19:18:35,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:35,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 19:18:35,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-09-24 19:18:35,565 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 20 states. [2020-09-24 19:18:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:36,159 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-09-24 19:18:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:18:36,159 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76 [2020-09-24 19:18:36,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:36,160 INFO L225 Difference]: With dead ends: 68 [2020-09-24 19:18:36,161 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 19:18:36,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2020-09-24 19:18:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 19:18:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-24 19:18:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 19:18:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-09-24 19:18:36,174 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 76 [2020-09-24 19:18:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:36,174 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-09-24 19:18:36,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 19:18:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-09-24 19:18:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 19:18:36,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:36,176 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 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] [2020-09-24 19:18:36,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:18:36,176 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash -27101013, now seen corresponding path program 6 times [2020-09-24 19:18:36,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:36,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694982828] [2020-09-24 19:18:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:37,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:37,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 19:18:37,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:18:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-24 19:18:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:18:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:37,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:37,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:37,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:37,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:37,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:37,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:37,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:37,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:37,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:37,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:37,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:37,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:37,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:37,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 19:18:37,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:18:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:37,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:37,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:37,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:37,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:37,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:37,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 19:18:37,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:37,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:37,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:37,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:37,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:37,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:37,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:37,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:37,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:18:37,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:37,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 19:18:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:37,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:37,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:18:37,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-24 19:18:37,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 19:18:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:18:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:38,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:38,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:38,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:38,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-24 19:18:38,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:18:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:38,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:38,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:38,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:18:38,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:38,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:38,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:38,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:38,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:18:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 9 proven. 93 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-09-24 19:18:38,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694982828] [2020-09-24 19:18:38,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:38,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 19:18:38,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674947609] [2020-09-24 19:18:38,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 19:18:38,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:38,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 19:18:38,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-09-24 19:18:38,616 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 22 states. [2020-09-24 19:18:39,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:39,688 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-09-24 19:18:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:18:39,689 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2020-09-24 19:18:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:39,691 INFO L225 Difference]: With dead ends: 73 [2020-09-24 19:18:39,691 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 19:18:39,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 19:18:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 19:18:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-24 19:18:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 19:18:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-09-24 19:18:39,708 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 86 [2020-09-24 19:18:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:39,708 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-09-24 19:18:39,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 19:18:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-09-24 19:18:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 19:18:39,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:39,709 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-09-24 19:18:39,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:18:39,711 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:39,712 INFO L82 PathProgramCache]: Analyzing trace with hash -298524793, now seen corresponding path program 4 times [2020-09-24 19:18:39,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:39,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509328593] [2020-09-24 19:18:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:39,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:39,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:40,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:40,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:40,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:18:40,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 19:18:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:18:40,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:18:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:18:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:40,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:40,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:40,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:40,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:40,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:40,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:40,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:41,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:41,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:18:41,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:18:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-09-24 19:18:41,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:18:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:41,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:18:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:41,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:41,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:41,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:41,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:41,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:18:41,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:41,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:18:41,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:41,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:18:41,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:41,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:41,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:41,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:41,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:41,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:18:41,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:41,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:41,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 19:18:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:41,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:41,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:41,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:18:41,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:18:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:41,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:41,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:41,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:41,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:41,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-24 19:18:41,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509328593] [2020-09-24 19:18:41,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:41,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:18:41,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139670563] [2020-09-24 19:18:41,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:18:41,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:41,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:18:41,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:41,277 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 5 states. [2020-09-24 19:18:41,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:41,327 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2020-09-24 19:18:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:18:41,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-24 19:18:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:41,342 INFO L225 Difference]: With dead ends: 105 [2020-09-24 19:18:41,342 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 19:18:41,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 19:18:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 19:18:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 19:18:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-09-24 19:18:41,353 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 65 [2020-09-24 19:18:41,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:41,353 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-09-24 19:18:41,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:18:41,353 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-09-24 19:18:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 19:18:41,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:41,355 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2020-09-24 19:18:41,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:18:41,356 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:41,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:41,356 INFO L82 PathProgramCache]: Analyzing trace with hash -516505397, now seen corresponding path program 7 times [2020-09-24 19:18:41,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:41,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643307427] [2020-09-24 19:18:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:41,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:42,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:42,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:18:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-09-24 19:18:42,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 19:18:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:18:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:42,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:42,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:42,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:42,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:42,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:42,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:42,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:42,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:42,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:42,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:42,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 19:18:42,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:18:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:42,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:42,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:42,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:42,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:42,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 19:18:42,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:42,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:42,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:42,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:42,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:42,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:42,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:18:42,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:42,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:42,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 19:18:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:42,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:42,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:42,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:42,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:42,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 19:18:42,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:42,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:42,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:42,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:42,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:42,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:42,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:18:42,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 19:18:42,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643307427] [2020-09-24 19:18:42,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:42,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 19:18:42,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210577419] [2020-09-24 19:18:42,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 19:18:42,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:42,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 19:18:42,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:18:42,731 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 17 states. [2020-09-24 19:18:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:43,304 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-09-24 19:18:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:18:43,304 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2020-09-24 19:18:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:43,306 INFO L225 Difference]: With dead ends: 67 [2020-09-24 19:18:43,306 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 19:18:43,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2020-09-24 19:18:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 19:18:43,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-24 19:18:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 19:18:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-09-24 19:18:43,313 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 66 [2020-09-24 19:18:43,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:43,313 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-09-24 19:18:43,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 19:18:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-09-24 19:18:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 19:18:43,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:43,315 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 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] [2020-09-24 19:18:43,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:18:43,315 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:43,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:43,315 INFO L82 PathProgramCache]: Analyzing trace with hash -694157514, now seen corresponding path program 8 times [2020-09-24 19:18:43,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:43,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978015391] [2020-09-24 19:18:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:44,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:44,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 19:18:44,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:18:44,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-24 19:18:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 19:18:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:44,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:44,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:44,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:44,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:44,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:44,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:44,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:44,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:44,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:44,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:44,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 19:18:44,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:18:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:44,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:44,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:44,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:44,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:44,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 19:18:44,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:44,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:44,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:44,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:18:44,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:44,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 19:18:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:45,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:45,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:18:45,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-09-24 19:18:45,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:18:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:18:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:45,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:45,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:18:45,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-24 19:18:45,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 19:18:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:18:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:46,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:46,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:46,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 19:18:46,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:18:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:46,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:46,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:46,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:46,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:46,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:18:46,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:46,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:46,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:46,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:18:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 29 proven. 123 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 19:18:46,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978015391] [2020-09-24 19:18:46,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:46,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 19:18:46,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670341376] [2020-09-24 19:18:46,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 19:18:46,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:46,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 19:18:46,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-09-24 19:18:46,631 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 25 states. [2020-09-24 19:18:48,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:48,013 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-09-24 19:18:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 19:18:48,014 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-24 19:18:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:48,015 INFO L225 Difference]: With dead ends: 72 [2020-09-24 19:18:48,015 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 19:18:48,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 15 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=195, Invalid=1611, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 19:18:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 19:18:48,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-24 19:18:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 19:18:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-09-24 19:18:48,022 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 96 [2020-09-24 19:18:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:48,023 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-09-24 19:18:48,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 19:18:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-09-24 19:18:48,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 19:18:48,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:48,024 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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] [2020-09-24 19:18:48,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:18:48,024 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:48,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:48,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1979672437, now seen corresponding path program 9 times [2020-09-24 19:18:48,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:48,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298733021] [2020-09-24 19:18:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:48,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:49,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:49,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:18:49,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:18:49,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-24 19:18:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 19:18:49,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:49,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:49,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:49,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:49,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:49,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:49,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 19:18:49,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:18:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:49,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:49,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:49,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 19:18:49,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:49,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:49,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:49,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:49,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:18:49,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:49,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:49,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 19:18:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:49,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:50,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:50,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 19:18:50,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 816 [2020-09-24 19:18:50,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 19:18:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:18:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:50,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:50,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:18:50,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-09-24 19:18:50,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:18:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:18:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:51,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:51,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:51,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:18:51,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-24 19:18:51,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 19:18:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:18:51,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:51,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:51,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:51,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 19:18:51,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:18:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:51,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:51,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:51,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:51,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:51,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:51,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 19:18:51,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:51,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:51,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:51,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:51,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:51,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:18:51,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 25 proven. 180 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-24 19:18:51,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298733021] [2020-09-24 19:18:51,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:51,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-24 19:18:51,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899615099] [2020-09-24 19:18:51,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 19:18:51,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 19:18:51,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-09-24 19:18:51,973 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 26 states. [2020-09-24 19:18:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:53,541 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-09-24 19:18:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 19:18:53,542 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 106 [2020-09-24 19:18:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:53,544 INFO L225 Difference]: With dead ends: 77 [2020-09-24 19:18:53,544 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 19:18:53,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=221, Invalid=1941, Unknown=0, NotChecked=0, Total=2162 [2020-09-24 19:18:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 19:18:53,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-09-24 19:18:53,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 19:18:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-09-24 19:18:53,551 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 106 [2020-09-24 19:18:53,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:53,551 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-09-24 19:18:53,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 19:18:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-09-24 19:18:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 19:18:53,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:53,553 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:53,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:18:53,553 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:53,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:53,553 INFO L82 PathProgramCache]: Analyzing trace with hash 275016086, now seen corresponding path program 10 times [2020-09-24 19:18:53,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:53,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143912198] [2020-09-24 19:18:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:54,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:54,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 19:18:54,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-09-24 19:18:54,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 19:18:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:18:54,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:54,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:54,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:54,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:54,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:54,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:54,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:54,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:54,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:54,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:18:54,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-24 19:18:54,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:18:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:18:54,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:55,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:55,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:55,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 19:18:55,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:18:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:55,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:55,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:55,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:55,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:55,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 19:18:55,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:55,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:55,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:55,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:55,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:55,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:55,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:55,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:18:55,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:55,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:55,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:55,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:55,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 19:18:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:55,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:55,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:55,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:55,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 19:18:55,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:55,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:55,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:55,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:55,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:18:55,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-09-24 19:18:55,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143912198] [2020-09-24 19:18:55,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:55,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 19:18:55,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803140955] [2020-09-24 19:18:55,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 19:18:55,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:55,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 19:18:55,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-09-24 19:18:55,607 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 20 states. [2020-09-24 19:18:56,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:56,278 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-09-24 19:18:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:18:56,279 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76 [2020-09-24 19:18:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:56,280 INFO L225 Difference]: With dead ends: 71 [2020-09-24 19:18:56,280 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 19:18:56,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 19:18:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 19:18:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-24 19:18:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 19:18:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2020-09-24 19:18:56,288 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 76 [2020-09-24 19:18:56,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:56,288 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2020-09-24 19:18:56,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 19:18:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2020-09-24 19:18:56,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 19:18:56,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:56,290 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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] [2020-09-24 19:18:56,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 19:18:56,291 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:56,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1359901377, now seen corresponding path program 11 times [2020-09-24 19:18:56,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:56,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034826773] [2020-09-24 19:18:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:57,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:57,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:18:57,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:18:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-24 19:18:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:18:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 19:18:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:57,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:57,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:57,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:57,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:57,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:18:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:57,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:57,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:18:57,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:57,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-24 19:18:57,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:57,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:18:57,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:57,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:18:57,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:57,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:57,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:57,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-24 19:18:57,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:18:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:58,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:58,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:58,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:58,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:18:58,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:58,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:58,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:58,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:58,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:18:58,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 19:18:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:58,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:58,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:18:58,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-24 19:18:58,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:18:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:18:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:58,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:58,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:59,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:59,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:18:59,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:59,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-24 19:18:59,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 19:18:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:18:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:59,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:59,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:59,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:18:59,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 19:18:59,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:18:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:59,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:59,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 19:18:59,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:18:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:18:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:18:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:59,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:59,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:18:59,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:18:59,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 24 proven. 171 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-09-24 19:18:59,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034826773] [2020-09-24 19:18:59,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:59,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 19:18:59,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113943760] [2020-09-24 19:18:59,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 19:18:59,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:59,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 19:18:59,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-09-24 19:18:59,654 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 27 states. [2020-09-24 19:19:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:19:01,143 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2020-09-24 19:19:01,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 19:19:01,144 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2020-09-24 19:19:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:19:01,145 INFO L225 Difference]: With dead ends: 81 [2020-09-24 19:19:01,146 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 19:19:01,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=204, Invalid=1776, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 19:19:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 19:19:01,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2020-09-24 19:19:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 19:19:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2020-09-24 19:19:01,160 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 106 [2020-09-24 19:19:01,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:19:01,163 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2020-09-24 19:19:01,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 19:19:01,164 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2020-09-24 19:19:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-24 19:19:01,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:19:01,165 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 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] [2020-09-24 19:19:01,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 19:19:01,167 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:19:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:19:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash -412591530, now seen corresponding path program 12 times [2020-09-24 19:19:01,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:19:01,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310245782] [2020-09-24 19:19:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:19:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:02,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:02,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-24 19:19:02,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:02,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:19:02,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:02,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-09-24 19:19:02,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:19:02,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 19:19:02,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:02,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:19:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:02,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:02,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:02,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:19:02,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:02,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:19:02,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:19:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:19:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:02,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:19:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:02,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:19:02,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 19:19:02,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:19:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:19:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:19:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:02,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:02,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:02,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:19:02,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:02,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 19:19:02,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:19:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:19:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:02,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:19:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:02,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:02,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:02,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:19:02,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 19:19:02,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:19:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:19:02,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:02,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:19:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:02,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:02,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:19:02,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:02,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:19:02,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:02,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:19:02,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:02,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:19:02,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 19:19:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:02,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:03,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:03,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 19:19:03,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:03,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-09-24 19:19:03,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:03,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 19:19:03,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:19:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:19:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:03,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:04,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:04,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:19:04,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-24 19:19:04,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:19:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:19:04,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:04,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:19:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:04,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:04,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:19:04,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-24 19:19:04,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 19:19:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:19:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:19:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:04,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:04,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:04,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:19:04,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 19:19:04,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:19:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:19:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:19:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:04,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:19:04,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:19:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:19:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:19:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:05,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 19:19:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:05,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:05,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:19:05,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:19:05,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:19:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:19:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 17 proven. 203 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-09-24 19:19:05,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310245782] [2020-09-24 19:19:05,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:19:05,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 19:19:05,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323835884] [2020-09-24 19:19:05,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 19:19:05,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:19:05,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 19:19:05,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-09-24 19:19:05,179 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand 27 states.