/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:16:14,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:16:14,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:16:14,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:16:14,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:16:14,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:16:14,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:16:14,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:16:14,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:16:14,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:16:14,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:16:14,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:16:14,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:16:14,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:16:14,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:16:14,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:16:14,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:16:14,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:16:14,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:16:14,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:16:14,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:16:14,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:16:14,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:16:14,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:16:14,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:16:14,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:16:14,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:16:14,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:16:14,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:16:14,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:16:14,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:16:14,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:16:14,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:16:14,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:16:14,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:16:14,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:16:14,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:16:14,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:16:14,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:16:14,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:16:14,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:16:14,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 18:16:14,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:16:14,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:16:14,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:16:14,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:16:14,161 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:16:14,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:16:14,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:16:14,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:16:14,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:16:14,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:16:14,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:16:14,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:16:14,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:16:14,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:16:14,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:16:14,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:16:14,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:16:14,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:16:14,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:16:14,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:16:14,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:16:14,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:16:14,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:16:14,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:16:14,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:16:14,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:16:14,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:16:14,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:16:14,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:16:14,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:16:14,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:16:14,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:16:14,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:16:14,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:16:14,492 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:16:14,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1.c [2020-10-14 18:16:14,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bf57dcd4/61381d2791ed48858f9200582f26923e/FLAGd96982bb4 [2020-10-14 18:16:15,018 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:16:15,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina1.c [2020-10-14 18:16:15,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bf57dcd4/61381d2791ed48858f9200582f26923e/FLAGd96982bb4 [2020-10-14 18:16:15,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bf57dcd4/61381d2791ed48858f9200582f26923e [2020-10-14 18:16:15,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:16:15,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:16:15,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:16:15,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:16:15,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:16:15,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:16:15" (1/1) ... [2020-10-14 18:16:15,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8c36e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15, skipping insertion in model container [2020-10-14 18:16:15,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:16:15" (1/1) ... [2020-10-14 18:16:15,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:16:15,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:16:15,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:16:15,644 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:16:15,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:16:15,681 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:16:15,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15 WrapperNode [2020-10-14 18:16:15,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:16:15,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:16:15,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:16:15,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:16:15,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15" (1/1) ... [2020-10-14 18:16:15,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15" (1/1) ... [2020-10-14 18:16:15,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15" (1/1) ... [2020-10-14 18:16:15,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15" (1/1) ... [2020-10-14 18:16:15,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15" (1/1) ... [2020-10-14 18:16:15,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15" (1/1) ... [2020-10-14 18:16:15,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15" (1/1) ... [2020-10-14 18:16:15,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:16:15,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:16:15,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:16:15,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:16:15,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:16:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:16:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:16:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:16:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:16:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:16:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:16:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:16:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:16:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:16:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:16:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 18:16:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:16:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:16:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 18:16:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:16:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:16:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:16:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:16:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:16:16,154 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:16:16,155 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:16:16,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:16:16 BoogieIcfgContainer [2020-10-14 18:16:16,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:16:16,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:16:16,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:16:16,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:16:16,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:16:15" (1/3) ... [2020-10-14 18:16:16,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea16ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:16:16, skipping insertion in model container [2020-10-14 18:16:16,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:15" (2/3) ... [2020-10-14 18:16:16,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea16ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:16:16, skipping insertion in model container [2020-10-14 18:16:16,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:16:16" (3/3) ... [2020-10-14 18:16:16,169 INFO L109 eAbstractionObserver]: Analyzing ICFG sina1.c [2020-10-14 18:16:16,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:16:16,188 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:16:16,204 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:16:16,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:16:16,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:16:16,231 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:16:16,231 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:16:16,231 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:16:16,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:16:16,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:16:16,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:16:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-14 18:16:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 18:16:16,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:16,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:16,265 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:16,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:16,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-10-14 18:16:16,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:16,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681629131] [2020-10-14 18:16:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:16,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:17,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:17,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 18:16:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:16:17,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-14 18:16:17,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:17,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:16:17,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:16:17,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:16:17,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 18:16:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:17,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:17,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:17,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:16:17,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:17,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:17,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:17,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:17,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:17,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:17,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:17,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:17,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:16:17,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 18:16:17,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:17,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:16:17,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681629131] [2020-10-14 18:16:17,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:16:17,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:16:17,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962427558] [2020-10-14 18:16:17,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:16:17,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:17,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:16:17,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:16:17,356 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-10-14 18:16:17,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:17,593 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2020-10-14 18:16:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:16:17,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-14 18:16:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:17,605 INFO L225 Difference]: With dead ends: 70 [2020-10-14 18:16:17,605 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 18:16:17,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:16:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 18:16:17,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-10-14 18:16:17,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 18:16:17,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-14 18:16:17,658 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-10-14 18:16:17,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:17,658 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-14 18:16:17,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:16:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-14 18:16:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 18:16:17,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:17,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:17,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:16:17,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:17,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:17,661 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-10-14 18:16:17,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:17,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051584863] [2020-10-14 18:16:17,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:17,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:18,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:18,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:18,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 18:16:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:16:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-10-14 18:16:18,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:18,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:16:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:16:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 18:16:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:18,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:18,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:16:18,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:18,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:18,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:18,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:18,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:18,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:18,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:18,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:18,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:18,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:16:18,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051584863] [2020-10-14 18:16:18,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:18,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:16:18,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38676387] [2020-10-14 18:16:18,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:16:18,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:18,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:16:18,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:16:18,829 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 13 states. [2020-10-14 18:16:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:19,521 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-14 18:16:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:16:19,521 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-14 18:16:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:19,523 INFO L225 Difference]: With dead ends: 53 [2020-10-14 18:16:19,523 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 18:16:19,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:16:19,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 18:16:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2020-10-14 18:16:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 18:16:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-14 18:16:19,536 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 26 [2020-10-14 18:16:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:19,537 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-14 18:16:19,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:16:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-14 18:16:19,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 18:16:19,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:19,538 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 18:16:19,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:16:19,539 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:19,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:19,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1048027141, now seen corresponding path program 2 times [2020-10-14 18:16:19,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:19,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908774631] [2020-10-14 18:16:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:19,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:19,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:19,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 18:16:19,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:16:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-14 18:16:19,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:19,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:16:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:16:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:16:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:20,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:20,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:20,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:20,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:20,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:20,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:20,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:20,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:20,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:20,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:20,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:20,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:20,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:20,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:16:20,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908774631] [2020-10-14 18:16:20,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:20,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:16:20,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72861369] [2020-10-14 18:16:20,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:16:20,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:20,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:16:20,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:16:20,275 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 15 states. [2020-10-14 18:16:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:20,844 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-10-14 18:16:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:16:20,845 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-10-14 18:16:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:20,848 INFO L225 Difference]: With dead ends: 67 [2020-10-14 18:16:20,848 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 18:16:20,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:16:20,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 18:16:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2020-10-14 18:16:20,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 18:16:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-14 18:16:20,860 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 28 [2020-10-14 18:16:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:20,861 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-14 18:16:20,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:16:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-14 18:16:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:16:20,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:20,862 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:20,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:16:20,863 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:20,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:20,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1619571715, now seen corresponding path program 3 times [2020-10-14 18:16:20,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:20,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066788453] [2020-10-14 18:16:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:21,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:21,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:21,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 18:16:21,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:16:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-14 18:16:21,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:21,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:16:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:16:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 18:16:21,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:21,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:21,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:21,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:21,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:21,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:16:21,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:21,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:21,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:21,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:21,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:21,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:21,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:21,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:16:21,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066788453] [2020-10-14 18:16:21,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:21,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:16:21,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026499226] [2020-10-14 18:16:21,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:16:21,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:21,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:16:21,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:16:21,908 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 17 states. [2020-10-14 18:16:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:22,647 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2020-10-14 18:16:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:16:22,648 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2020-10-14 18:16:22,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:22,649 INFO L225 Difference]: With dead ends: 85 [2020-10-14 18:16:22,649 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 18:16:22,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:16:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 18:16:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 39. [2020-10-14 18:16:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 18:16:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-14 18:16:22,660 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 30 [2020-10-14 18:16:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:22,660 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-14 18:16:22,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:16:22,660 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-14 18:16:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 18:16:22,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:22,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:22,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:16:22,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:22,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1497286619, now seen corresponding path program 1 times [2020-10-14 18:16:22,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:22,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37597618] [2020-10-14 18:16:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:22,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:22,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:23,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:23,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 18:16:23,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:16:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-14 18:16:23,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:23,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:16:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:16:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 18:16:23,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:23,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:23,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:23,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:23,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:23,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:23,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:23,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:23,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:23,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:23,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:23,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:23,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:23,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:23,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:23,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:23,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:16:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:23,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:23,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:23,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:23,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:16:23,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:23,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:23,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:23,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:23,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:23,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:16:23,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37597618] [2020-10-14 18:16:23,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:23,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:16:23,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184657192] [2020-10-14 18:16:23,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:16:23,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:23,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:16:23,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:16:23,770 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 17 states. [2020-10-14 18:16:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:24,667 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-14 18:16:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:16:24,668 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 36 [2020-10-14 18:16:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:24,669 INFO L225 Difference]: With dead ends: 61 [2020-10-14 18:16:24,669 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 18:16:24,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:16:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 18:16:24,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-14 18:16:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 18:16:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-14 18:16:24,678 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 36 [2020-10-14 18:16:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:24,678 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-14 18:16:24,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:16:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-14 18:16:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 18:16:24,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:24,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:24,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:16:24,680 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:24,680 INFO L82 PathProgramCache]: Analyzing trace with hash 175308249, now seen corresponding path program 2 times [2020-10-14 18:16:24,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:24,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998633214] [2020-10-14 18:16:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:24,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:24,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:25,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:25,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 18:16:25,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:16:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-14 18:16:25,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:25,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:16:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 18:16:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:16:25,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:25,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:25,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:25,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:25,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:25,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:25,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:25,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:25,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:25,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:25,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:25,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:25,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:25,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:25,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:25,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:16:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:25,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:25,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:25,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:25,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:16:25,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:25,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:16:25,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998633214] [2020-10-14 18:16:25,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:25,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:16:25,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034248888] [2020-10-14 18:16:25,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:16:25,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:25,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:16:25,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:16:25,838 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 8 states. [2020-10-14 18:16:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:26,033 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2020-10-14 18:16:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:16:26,033 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-14 18:16:26,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:26,035 INFO L225 Difference]: With dead ends: 70 [2020-10-14 18:16:26,035 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 18:16:26,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:16:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 18:16:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-10-14 18:16:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 18:16:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-14 18:16:26,053 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2020-10-14 18:16:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:26,053 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-14 18:16:26,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:16:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-14 18:16:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 18:16:26,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:26,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:26,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:16:26,061 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1293945879, now seen corresponding path program 3 times [2020-10-14 18:16:26,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:26,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436669802] [2020-10-14 18:16:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:26,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:29,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:29,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 18:16:29,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:16:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3724 [2020-10-14 18:16:29,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:29,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:16:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:16:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 18:16:29,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:30,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:30,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:30,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:30,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:30,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:30,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:30,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:30,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:30,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:30,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:30,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:30,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:30,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:30,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:16:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:30,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:30,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:30,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:16:30,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:30,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:30,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:16:30,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436669802] [2020-10-14 18:16:30,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:30,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:16:30,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227732593] [2020-10-14 18:16:30,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:16:30,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:30,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:16:30,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:16:30,203 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 20 states. [2020-10-14 18:16:31,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:31,032 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-10-14 18:16:31,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:16:31,033 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2020-10-14 18:16:31,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:31,034 INFO L225 Difference]: With dead ends: 56 [2020-10-14 18:16:31,034 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 18:16:31,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:16:31,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 18:16:31,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-14 18:16:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 18:16:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-14 18:16:31,050 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 40 [2020-10-14 18:16:31,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:31,050 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-14 18:16:31,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:16:31,051 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-14 18:16:31,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 18:16:31,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:31,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:31,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:16:31,054 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:31,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1953824275, now seen corresponding path program 4 times [2020-10-14 18:16:31,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:31,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665763359] [2020-10-14 18:16:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:31,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:31,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:33,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:35,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:36,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:36,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 18:16:36,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:16:36,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:16:36,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:36,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:16:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:16:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 18:16:36,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:36,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:36,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:36,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:36,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:36,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:36,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:36,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:36,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:36,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:16:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:36,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:36,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:36,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:36,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:36,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:16:36,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:36,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:36,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:36,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:36,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:16:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:36,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:36,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:36,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:16:36,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:36,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:16:36,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665763359] [2020-10-14 18:16:36,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:36,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:16:36,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711698791] [2020-10-14 18:16:36,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:16:36,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:36,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:16:36,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:16:36,603 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 21 states. [2020-10-14 18:16:38,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:38,440 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-10-14 18:16:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:16:38,441 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 48 [2020-10-14 18:16:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:38,445 INFO L225 Difference]: With dead ends: 82 [2020-10-14 18:16:38,445 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 18:16:38,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:16:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 18:16:38,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-10-14 18:16:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 18:16:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-10-14 18:16:38,471 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 48 [2020-10-14 18:16:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:38,472 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-10-14 18:16:38,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:16:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-10-14 18:16:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 18:16:38,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:38,479 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:38,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:16:38,480 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:38,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:38,480 INFO L82 PathProgramCache]: Analyzing trace with hash -719836437, now seen corresponding path program 5 times [2020-10-14 18:16:38,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:38,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334137468] [2020-10-14 18:16:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:38,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:38,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:38,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:39,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:43,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:43,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 18:16:43,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:16:43,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:16:43,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:43,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:16:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:16:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 18:16:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:44,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:44,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:44,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:44,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:44,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:44,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:44,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:44,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:44,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:44,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:44,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:44,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:16:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:44,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:44,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:44,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:44,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:44,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:44,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:44,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:44,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:16:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:44,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:44,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:44,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:44,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:44,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:44,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:44,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:16:44,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334137468] [2020-10-14 18:16:44,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:44,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:16:44,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765116715] [2020-10-14 18:16:44,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:16:44,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:44,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:16:44,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:16:44,095 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 24 states. [2020-10-14 18:16:46,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:46,552 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2020-10-14 18:16:46,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:16:46,553 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 50 [2020-10-14 18:16:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:46,555 INFO L225 Difference]: With dead ends: 109 [2020-10-14 18:16:46,555 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 18:16:46,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=238, Invalid=1654, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:16:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 18:16:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2020-10-14 18:16:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 18:16:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-14 18:16:46,572 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 50 [2020-10-14 18:16:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:46,573 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-14 18:16:46,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:16:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-14 18:16:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 18:16:46,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:46,574 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:46,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:16:46,575 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:46,575 INFO L82 PathProgramCache]: Analyzing trace with hash -268497815, now seen corresponding path program 6 times [2020-10-14 18:16:46,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:46,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542345632] [2020-10-14 18:16:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:46,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:51,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:51,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 18:16:51,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:16:51,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4969 [2020-10-14 18:16:51,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:51,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:16:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 18:16:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 18:16:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:51,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:51,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:51,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:51,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:51,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:51,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:51,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:51,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:51,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:51,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:51,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:51,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:51,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:51,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:51,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:51,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:16:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:51,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:51,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:51,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:51,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:51,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:51,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:16:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:51,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:51,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:51,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:51,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:51,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:51,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:51,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 18:16:51,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542345632] [2020-10-14 18:16:51,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:51,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:16:51,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506922062] [2020-10-14 18:16:51,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:16:51,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:51,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:16:51,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:16:51,656 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 10 states. [2020-10-14 18:16:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:51,922 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2020-10-14 18:16:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:16:51,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-14 18:16:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:51,924 INFO L225 Difference]: With dead ends: 131 [2020-10-14 18:16:51,924 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 18:16:51,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:16:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 18:16:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2020-10-14 18:16:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 18:16:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2020-10-14 18:16:51,939 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 52 [2020-10-14 18:16:51,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:51,940 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2020-10-14 18:16:51,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:16:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2020-10-14 18:16:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 18:16:51,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:51,941 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:51,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:16:51,941 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:51,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1027787225, now seen corresponding path program 7 times [2020-10-14 18:16:51,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:51,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380721602] [2020-10-14 18:16:51,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:51,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:51,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:52,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:52,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:56,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:56,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 18:16:56,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:16:56,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:16:56,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:56,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:56,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:16:56,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:16:56,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 18:16:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:57,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:16:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:57,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:57,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:57,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:16:57,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:57,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:57,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:57,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:16:57,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:16:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:57,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:16:57,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:57,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:16:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:16:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:57,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:16:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:57,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:57,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:57,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:57,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:57,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:57,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:16:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:57,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:57,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:16:57,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:16:57,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:16:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:16:57,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:16:57,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:16:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:16:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:16:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:16:57,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:16:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 18:16:57,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380721602] [2020-10-14 18:16:57,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:16:57,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:16:57,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963398876] [2020-10-14 18:16:57,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:16:57,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:16:57,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:16:57,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:16:57,490 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 21 states. [2020-10-14 18:16:58,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:16:58,410 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-10-14 18:16:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:16:58,412 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 54 [2020-10-14 18:16:58,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:16:58,413 INFO L225 Difference]: With dead ends: 94 [2020-10-14 18:16:58,413 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 18:16:58,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:16:58,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 18:16:58,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 61. [2020-10-14 18:16:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 18:16:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-14 18:16:58,426 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 54 [2020-10-14 18:16:58,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:16:58,426 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-14 18:16:58,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:16:58,426 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-14 18:16:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:16:58,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:16:58,427 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:16:58,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:16:58,428 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:16:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:16:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash 560921729, now seen corresponding path program 8 times [2020-10-14 18:16:58,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:16:58,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14075836] [2020-10-14 18:16:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:16:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:16:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:58,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:16:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:03,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:03,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 18:17:03,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:17:03,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:17:03,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:03,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:17:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:17:03,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 18:17:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:03,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:17:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:03,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:03,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:17:03,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:03,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:03,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:03,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:03,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:03,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:03,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:03,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:17:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:03,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:03,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:03,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:03,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:03,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:03,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:03,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:17:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:03,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:03,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:03,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:03,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:03,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:03,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:17:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:03,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:03,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:03,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:17:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:03,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:03,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:03,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:03,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:03,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:03,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 18:17:03,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14075836] [2020-10-14 18:17:03,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:17:03,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:17:03,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121506659] [2020-10-14 18:17:03,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:17:03,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:17:03,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:17:03,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:17:03,593 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 12 states. [2020-10-14 18:17:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:17:03,897 INFO L93 Difference]: Finished difference Result 142 states and 149 transitions. [2020-10-14 18:17:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:17:03,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-14 18:17:03,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:17:03,899 INFO L225 Difference]: With dead ends: 142 [2020-10-14 18:17:03,899 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 18:17:03,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:17:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 18:17:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-10-14 18:17:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 18:17:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-14 18:17:03,913 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 58 [2020-10-14 18:17:03,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:17:03,913 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-14 18:17:03,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:17:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-14 18:17:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 18:17:03,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:17:03,914 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:17:03,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:17:03,915 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:17:03,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:17:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash 858135485, now seen corresponding path program 9 times [2020-10-14 18:17:03,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:17:03,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589664305] [2020-10-14 18:17:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:17:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:08,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:08,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 18:17:08,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:17:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:17:08,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:08,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:17:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 18:17:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 18:17:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:17:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:09,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:09,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:17:09,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:09,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:09,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:09,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:09,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:09,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:17:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:09,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:09,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:09,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:09,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:17:09,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:09,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:09,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:17:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:09,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:09,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:09,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:09,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:09,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:09,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:09,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:09,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:17:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:09,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:09,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:09,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:09,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:17:09,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:09,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:09,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:17:09,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:09,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:17:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:17:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:09,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:09,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:09,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:09,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:09,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:09,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 18:17:09,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589664305] [2020-10-14 18:17:09,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:17:09,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:17:09,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679465990] [2020-10-14 18:17:09,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:17:09,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:17:09,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:17:09,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:17:09,381 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 19 states. [2020-10-14 18:17:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:17:10,451 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-14 18:17:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:17:10,452 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-14 18:17:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:17:10,453 INFO L225 Difference]: With dead ends: 92 [2020-10-14 18:17:10,453 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 18:17:10,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:17:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 18:17:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2020-10-14 18:17:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 18:17:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-10-14 18:17:10,479 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 62 [2020-10-14 18:17:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:17:10,480 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-10-14 18:17:10,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:17:10,480 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-10-14 18:17:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 18:17:10,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:17:10,482 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:17:10,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:17:10,482 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:17:10,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:17:10,482 INFO L82 PathProgramCache]: Analyzing trace with hash 914407419, now seen corresponding path program 10 times [2020-10-14 18:17:10,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:17:10,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110138122] [2020-10-14 18:17:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:17:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:10,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:15,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:15,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 18:17:15,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:17:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:17:15,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:15,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:17:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:17:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 18:17:15,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:17:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:15,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:15,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:17:15,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:15,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:15,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:15,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:15,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:17:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:15,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:15,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:15,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:15,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:17:15,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:15,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:15,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:15,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:17:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:15,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:15,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:15,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:15,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:15,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:17:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:15,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:15,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:15,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:17:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:15,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:15,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:15,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:15,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:15,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:15,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:15,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:17:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:17:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 22 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 18:17:15,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110138122] [2020-10-14 18:17:15,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:17:15,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:17:15,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223787925] [2020-10-14 18:17:15,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:17:15,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:17:15,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:17:15,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:17:15,916 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 21 states. [2020-10-14 18:17:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:17:17,266 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2020-10-14 18:17:17,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:17:17,267 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-10-14 18:17:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:17:17,268 INFO L225 Difference]: With dead ends: 138 [2020-10-14 18:17:17,268 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 18:17:17,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:17:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 18:17:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-10-14 18:17:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 18:17:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-10-14 18:17:17,286 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 64 [2020-10-14 18:17:17,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:17:17,286 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-10-14 18:17:17,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:17:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-10-14 18:17:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 18:17:17,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:17:17,287 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:17:17,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:17:17,288 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:17:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:17:17,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1497902329, now seen corresponding path program 11 times [2020-10-14 18:17:17,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:17:17,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701340531] [2020-10-14 18:17:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:17:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:17,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:17,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:18,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:18,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:18,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:22,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:22,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 18:17:22,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:17:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:17:22,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:22,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:17:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 18:17:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 18:17:22,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:22,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:17:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:22,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:22,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:17:22,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:22,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:22,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:22,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:17:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:22,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:22,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:22,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:22,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:22,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:22,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:17:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:22,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:22,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:22,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:22,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:22,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:17:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:22,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:22,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:22,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:22,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:22,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:22,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:17:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:22,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:22,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:22,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:17:22,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:22,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:17:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:17:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 11 proven. 44 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 18:17:22,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701340531] [2020-10-14 18:17:22,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:17:22,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:17:22,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552028448] [2020-10-14 18:17:22,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:17:22,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:17:22,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:17:22,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:17:22,851 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 21 states. [2020-10-14 18:17:24,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:17:24,076 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-14 18:17:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:17:24,076 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 66 [2020-10-14 18:17:24,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:17:24,078 INFO L225 Difference]: With dead ends: 108 [2020-10-14 18:17:24,078 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 18:17:24,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=1167, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:17:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 18:17:24,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 85. [2020-10-14 18:17:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 18:17:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-10-14 18:17:24,091 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 66 [2020-10-14 18:17:24,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:17:24,091 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-10-14 18:17:24,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:17:24,092 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-10-14 18:17:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 18:17:24,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:17:24,093 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:17:24,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:17:24,093 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:17:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:17:24,093 INFO L82 PathProgramCache]: Analyzing trace with hash 846334867, now seen corresponding path program 12 times [2020-10-14 18:17:24,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:17:24,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689342252] [2020-10-14 18:17:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:17:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:24,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:24,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:25,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:29,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:29,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 18:17:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:17:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:17:29,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:29,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:17:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:17:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 18:17:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:29,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:17:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:29,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:29,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:17:29,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:29,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:29,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:29,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:17:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:29,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:29,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:29,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:29,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:17:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:29,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:29,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:29,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:29,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:29,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:29,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:29,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:29,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:17:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:29,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:29,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:29,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:29,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:29,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:17:29,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:29,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:29,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:17:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:29,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:29,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:29,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:29,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:29,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:17:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:29,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:29,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:29,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:29,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:17:29,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:29,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:29,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:29,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:29,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:17:29,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689342252] [2020-10-14 18:17:29,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:17:29,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:17:29,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736718122] [2020-10-14 18:17:29,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:17:29,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:17:29,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:17:29,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:17:29,298 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 14 states. [2020-10-14 18:17:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:17:29,784 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-10-14 18:17:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:17:29,785 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-14 18:17:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:17:29,786 INFO L225 Difference]: With dead ends: 139 [2020-10-14 18:17:29,786 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 18:17:29,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:17:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 18:17:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2020-10-14 18:17:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 18:17:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-10-14 18:17:29,798 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 70 [2020-10-14 18:17:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:17:29,798 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-10-14 18:17:29,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:17:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-10-14 18:17:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 18:17:29,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:17:29,799 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:17:29,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:17:29,800 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:17:29,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:17:29,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1643978959, now seen corresponding path program 13 times [2020-10-14 18:17:29,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:17:29,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692624614] [2020-10-14 18:17:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:17:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:29,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:30,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:30,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:30,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:32,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:34,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:34,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 18:17:34,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 18:17:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:17:34,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:34,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:17:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 18:17:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:17:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:35,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:17:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:35,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:35,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:17:35,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:35,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:35,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:17:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:35,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:35,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:35,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:35,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:35,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:35,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:35,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:35,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:17:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:35,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:35,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:35,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:35,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:35,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:35,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:17:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:35,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:35,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:35,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:35,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:17:35,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:35,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:35,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:35,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:17:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:35,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:35,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:35,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:35,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:35,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:17:35,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:35,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:17:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:17:35,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:17:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:35,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:35,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:35,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:35,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:35,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:35,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 13 proven. 61 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:17:35,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692624614] [2020-10-14 18:17:35,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:17:35,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:17:35,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371559828] [2020-10-14 18:17:35,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:17:35,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:17:35,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:17:35,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:17:35,357 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 21 states. [2020-10-14 18:17:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:17:36,788 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-10-14 18:17:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 18:17:36,788 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-10-14 18:17:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:17:36,789 INFO L225 Difference]: With dead ends: 108 [2020-10-14 18:17:36,790 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 18:17:36,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:17:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 18:17:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2020-10-14 18:17:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 18:17:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-10-14 18:17:36,806 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 74 [2020-10-14 18:17:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:17:36,807 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-10-14 18:17:36,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:17:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-10-14 18:17:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 18:17:36,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:17:36,808 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:17:36,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:17:36,808 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:17:36,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:17:36,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1956005901, now seen corresponding path program 14 times [2020-10-14 18:17:36,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:17:36,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768600325] [2020-10-14 18:17:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:17:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:36,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:41,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:41,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 18:17:41,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:17:41,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:17:41,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:41,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:17:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:17:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 18:17:41,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:17:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:42,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:42,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:17:42,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:42,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:42,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:42,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:42,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:42,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:17:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:42,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:42,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:42,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:42,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:17:42,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:42,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:42,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:17:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:42,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:42,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:42,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:42,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:42,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:42,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:42,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:17:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:42,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:42,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:42,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:42,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:42,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:42,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:17:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:42,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:42,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:42,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:42,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:42,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:17:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:17:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:42,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:17:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:42,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:42,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:42,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:17:42,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:42,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:17:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:42,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 36 proven. 70 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 18:17:42,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768600325] [2020-10-14 18:17:42,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:17:42,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:17:42,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223894062] [2020-10-14 18:17:42,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:17:42,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:17:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:17:42,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:17:42,296 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand 23 states. [2020-10-14 18:17:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:17:43,767 INFO L93 Difference]: Finished difference Result 168 states and 188 transitions. [2020-10-14 18:17:43,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:17:43,768 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2020-10-14 18:17:43,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:17:43,769 INFO L225 Difference]: With dead ends: 168 [2020-10-14 18:17:43,769 INFO L226 Difference]: Without dead ends: 137 [2020-10-14 18:17:43,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 18:17:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-14 18:17:43,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 114. [2020-10-14 18:17:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 18:17:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-10-14 18:17:43,788 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 76 [2020-10-14 18:17:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:17:43,789 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-10-14 18:17:43,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:17:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-10-14 18:17:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 18:17:43,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:17:43,790 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:17:43,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:17:43,791 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:17:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:17:43,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1852037109, now seen corresponding path program 15 times [2020-10-14 18:17:43,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:17:43,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425128943] [2020-10-14 18:17:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:17:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:45,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:48,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:48,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 18:17:48,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 18:17:48,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:17:48,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:48,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:17:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 18:17:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 18:17:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:49,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:17:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:49,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:49,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:49,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:17:49,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:49,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:49,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:49,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:17:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:49,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:49,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:49,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:49,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:17:49,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:49,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:17:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:49,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:49,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:49,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:17:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:49,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:49,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:49,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:49,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:49,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:17:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:49,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:49,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:49,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:17:49,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:49,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:17:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:17:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:17:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:49,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:49,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:49,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:49,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:49,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:49,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 18:17:49,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425128943] [2020-10-14 18:17:49,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:17:49,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:17:49,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473106175] [2020-10-14 18:17:49,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:17:49,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:17:49,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:17:49,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:17:49,376 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 23 states. [2020-10-14 18:17:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:17:50,961 INFO L93 Difference]: Finished difference Result 126 states and 135 transitions. [2020-10-14 18:17:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 18:17:50,961 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 78 [2020-10-14 18:17:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:17:50,962 INFO L225 Difference]: With dead ends: 126 [2020-10-14 18:17:50,962 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 18:17:50,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=184, Invalid=1456, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:17:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 18:17:50,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 99. [2020-10-14 18:17:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 18:17:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2020-10-14 18:17:50,974 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 78 [2020-10-14 18:17:50,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:17:50,975 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2020-10-14 18:17:50,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:17:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2020-10-14 18:17:50,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 18:17:50,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:17:50,975 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:17:50,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:17:50,976 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:17:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:17:50,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1564728997, now seen corresponding path program 16 times [2020-10-14 18:17:50,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:17:50,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097211362] [2020-10-14 18:17:50,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:17:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:50,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:51,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:51,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:55,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:55,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 18:17:55,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:17:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:17:55,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:55,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:17:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:17:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:17:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:56,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:17:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:56,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:56,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:17:56,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:56,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:56,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:17:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:56,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:56,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:56,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:56,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:56,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:17:56,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:56,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:17:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:17:56,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:17:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:56,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:56,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:56,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:56,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:56,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:56,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:17:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:56,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:56,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:56,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:56,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:17:56,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:56,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:56,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:17:56,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:17:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:56,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:56,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:56,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:56,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:56,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:56,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:56,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:17:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:56,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:56,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:56,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:56,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:56,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:56,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:56,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:17:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:56,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:17:56,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:17:56,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:17:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:17:56,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:17:56,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:17:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:17:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:17:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:17:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:17:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 60 proven. 25 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-14 18:17:56,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097211362] [2020-10-14 18:17:56,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:17:56,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:17:56,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728758430] [2020-10-14 18:17:56,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:17:56,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:17:56,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:17:56,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:17:56,159 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand 16 states. [2020-10-14 18:17:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:17:56,640 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-14 18:17:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:17:56,641 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-10-14 18:17:56,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:17:56,642 INFO L225 Difference]: With dead ends: 161 [2020-10-14 18:17:56,642 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 18:17:56,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:17:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 18:17:56,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2020-10-14 18:17:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 18:17:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-14 18:17:56,654 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 82 [2020-10-14 18:17:56,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:17:56,654 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-14 18:17:56,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:17:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-14 18:17:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 18:17:56,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:17:56,655 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:17:56,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:17:56,656 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:17:56,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:17:56,656 INFO L82 PathProgramCache]: Analyzing trace with hash 485878241, now seen corresponding path program 17 times [2020-10-14 18:17:56,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:17:56,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537365367] [2020-10-14 18:17:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:17:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:17:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:56,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:57,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:59,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:17:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:01,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:01,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 18:18:01,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:18:01,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:18:01,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:01,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 18:18:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:18:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 18:18:01,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:18:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:02,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:02,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:02,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:18:02,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:02,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:02,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:02,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:18:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:02,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:02,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:02,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:02,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:18:02,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:02,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:02,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:02,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:02,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:18:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:02,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:02,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:02,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:18:02,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:02,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:18:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:18:02,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:02,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:18:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:02,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:02,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:02,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:02,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:02,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:02,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:18:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:02,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:02,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:02,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:02,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:18:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:02,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:02,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:02,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:02,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:02,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:18:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:02,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:02,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:02,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:02,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:02,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 33 proven. 91 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-14 18:18:02,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537365367] [2020-10-14 18:18:02,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:18:02,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:18:02,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553447010] [2020-10-14 18:18:02,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:18:02,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:18:02,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:18:02,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:18:02,729 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 27 states. [2020-10-14 18:18:05,716 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-14 18:18:06,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:18:06,144 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-10-14 18:18:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 18:18:06,145 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 86 [2020-10-14 18:18:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:18:06,147 INFO L225 Difference]: With dead ends: 134 [2020-10-14 18:18:06,147 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 18:18:06,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=423, Invalid=2769, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 18:18:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 18:18:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-14 18:18:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 18:18:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-14 18:18:06,160 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 86 [2020-10-14 18:18:06,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:18:06,161 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-14 18:18:06,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:18:06,161 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-14 18:18:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 18:18:06,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:18:06,162 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:18:06,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:18:06,162 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:18:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:18:06,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1784308831, now seen corresponding path program 18 times [2020-10-14 18:18:06,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:18:06,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177383329] [2020-10-14 18:18:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:18:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:06,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:07,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:11,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:11,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 18:18:11,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:18:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:18:11,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:11,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 18:18:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:18:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 18:18:11,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:11,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:18:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:11,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:11,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:11,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:18:11,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:11,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:11,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:11,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:11,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:18:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:11,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:11,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:11,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:18:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:11,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:11,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:18:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:11,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:11,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:11,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:11,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:11,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:11,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:11,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:18:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:11,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:11,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:11,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:11,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:11,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:11,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:18:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:11,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:11,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:11,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:11,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:18:11,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:11,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:11,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:18:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:18:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:18:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:11,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:11,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:11,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:11,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:11,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:11,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:18:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:18:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:11,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:11,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:11,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:11,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:18:11,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:11,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:18:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 46 proven. 99 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:18:11,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177383329] [2020-10-14 18:18:11,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:18:11,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:18:11,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532831476] [2020-10-14 18:18:11,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:18:11,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:18:11,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:18:11,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:18:11,921 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 27 states. [2020-10-14 18:18:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:18:14,404 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2020-10-14 18:18:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 18:18:14,407 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 88 [2020-10-14 18:18:14,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:18:14,409 INFO L225 Difference]: With dead ends: 169 [2020-10-14 18:18:14,410 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 18:18:14,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=277, Invalid=2803, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 18:18:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 18:18:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 96. [2020-10-14 18:18:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 18:18:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2020-10-14 18:18:14,442 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 88 [2020-10-14 18:18:14,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:18:14,443 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2020-10-14 18:18:14,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:18:14,443 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2020-10-14 18:18:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:18:14,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:18:14,446 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:18:14,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:18:14,447 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:18:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:18:14,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1038411549, now seen corresponding path program 19 times [2020-10-14 18:18:14,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:18:14,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953355985] [2020-10-14 18:18:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:18:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:14,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:16,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:16,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:16,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:17,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:18,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:19,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:19,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 18:18:19,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 18:18:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:18:19,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:19,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:18:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 18:18:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 18:18:19,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:18:20,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:18:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:20,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:20,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:18:20,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:20,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:20,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:20,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:20,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:20,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:20,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:20,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:18:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:20,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:20,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:20,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:20,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:18:20,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:20,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:20,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:20,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:18:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:20,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:20,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:20,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:20,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:20,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:20,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:20,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:18:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:20,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:20,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:20,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:20,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:20,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:20,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:20,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:20,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:20,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:20,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:20,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:18:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:20,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:20,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:20,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:20,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:20,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:20,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:20,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:18:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:20,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:20,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:20,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:20,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:20,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:20,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:20,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:18:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:20,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:18:20,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:20,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:18:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:20,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:20,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:20,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:20,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:20,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:20,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 18 proven. 103 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 18:18:20,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953355985] [2020-10-14 18:18:20,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:18:20,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:18:20,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125990638] [2020-10-14 18:18:20,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:18:20,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:18:20,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:18:20,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:18:20,231 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand 24 states. [2020-10-14 18:18:21,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:18:21,903 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2020-10-14 18:18:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:18:21,904 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2020-10-14 18:18:21,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:18:21,905 INFO L225 Difference]: With dead ends: 118 [2020-10-14 18:18:21,906 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 18:18:21,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:18:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 18:18:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2020-10-14 18:18:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 18:18:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-14 18:18:21,922 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 90 [2020-10-14 18:18:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:18:21,922 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-14 18:18:21,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:18:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-14 18:18:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 18:18:21,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:18:21,924 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:18:21,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:18:21,924 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:18:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:18:21,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2095019763, now seen corresponding path program 20 times [2020-10-14 18:18:21,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:18:21,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35817544] [2020-10-14 18:18:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:18:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:21,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:22,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:22,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:25,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:26,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:26,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 18:18:26,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:18:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:18:26,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:26,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:18:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 18:18:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 18:18:26,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:18:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:27,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:27,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:18:27,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:27,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:27,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:18:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:27,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:27,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:27,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:27,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:18:27,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:27,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:27,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:18:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:27,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:27,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:27,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:27,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:27,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:27,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:18:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:27,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:27,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:27,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:27,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:27,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:27,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:27,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:18:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:27,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:27,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:27,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:27,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:27,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:27,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:27,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:18:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:27,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:27,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:27,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:27,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:18:27,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:27,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:18:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:18:27,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:18:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:27,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:27,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:27,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:27,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:27,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:27,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:27,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:27,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:18:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:27,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:27,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:27,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:27,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:27,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:27,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:27,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 20 proven. 128 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 18:18:27,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35817544] [2020-10-14 18:18:27,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:18:27,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:18:27,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224715161] [2020-10-14 18:18:27,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:18:27,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:18:27,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:18:27,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:18:27,577 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 25 states. [2020-10-14 18:18:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:18:29,646 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2020-10-14 18:18:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 18:18:29,646 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 98 [2020-10-14 18:18:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:18:29,648 INFO L225 Difference]: With dead ends: 155 [2020-10-14 18:18:29,648 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 18:18:29,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=200, Invalid=2250, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 18:18:29,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 18:18:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140. [2020-10-14 18:18:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 18:18:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2020-10-14 18:18:29,672 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 98 [2020-10-14 18:18:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:18:29,672 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2020-10-14 18:18:29,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:18:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2020-10-14 18:18:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 18:18:29,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:18:29,674 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:18:29,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:18:29,674 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:18:29,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:18:29,675 INFO L82 PathProgramCache]: Analyzing trace with hash 777029427, now seen corresponding path program 21 times [2020-10-14 18:18:29,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:18:29,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611440167] [2020-10-14 18:18:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:18:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:29,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:29,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:30,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:34,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:34,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 18:18:34,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:18:34,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:18:34,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:34,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 18:18:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:18:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:18:34,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:35,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:18:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:35,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:35,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:18:35,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:35,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:35,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:35,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:18:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:35,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:35,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:35,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:35,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:35,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:35,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:18:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:35,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:35,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:35,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:18:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:35,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:18:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:35,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:35,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:35,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:35,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:18:35,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:35,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:35,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:18:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:35,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:35,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:35,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:35,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:18:35,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:35,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:18:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:18:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:18:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:35,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:35,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:35,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:35,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:35,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:35,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:18:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:35,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:35,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:18:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:35,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:35,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:35,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:18:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:35,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:18:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:35,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:35,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:35,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:35,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:35,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:35,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:35,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:18:35,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:35,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 114 proven. 61 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 18:18:35,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611440167] [2020-10-14 18:18:35,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:18:35,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:18:35,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386797195] [2020-10-14 18:18:35,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:18:35,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:18:35,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:18:35,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:18:35,980 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand 28 states. [2020-10-14 18:18:37,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:18:37,837 INFO L93 Difference]: Finished difference Result 237 states and 268 transitions. [2020-10-14 18:18:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:18:37,838 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 98 [2020-10-14 18:18:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:18:37,840 INFO L225 Difference]: With dead ends: 237 [2020-10-14 18:18:37,840 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 18:18:37,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=331, Invalid=1561, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:18:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 18:18:37,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 124. [2020-10-14 18:18:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 18:18:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2020-10-14 18:18:37,865 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 98 [2020-10-14 18:18:37,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:18:37,865 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2020-10-14 18:18:37,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:18:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2020-10-14 18:18:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 18:18:37,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:18:37,867 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:18:37,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:18:37,867 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:18:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:18:37,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1871961039, now seen corresponding path program 22 times [2020-10-14 18:18:37,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:18:37,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785948364] [2020-10-14 18:18:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:18:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:37,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:42,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:42,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 18:18:42,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:18:42,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:18:42,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:42,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 18:18:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:18:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 18:18:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:18:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:43,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:43,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:18:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:43,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:43,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:43,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:18:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:43,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:43,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:43,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:43,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:43,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:43,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:43,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:43,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:18:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:43,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:43,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:43,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:18:43,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:43,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:18:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:43,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:43,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:43,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:43,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:18:43,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:43,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:43,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:43,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:43,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:18:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:43,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:43,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:43,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:43,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:43,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:43,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:43,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:18:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:43,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:43,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:43,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:43,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:43,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:43,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:43,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:18:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:43,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:43,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:43,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:43,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:18:43,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:43,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:18:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:18:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:43,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:18:43,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:18:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:43,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:43,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:43,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:43,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:18:43,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:43,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:18:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 62 proven. 146 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 18:18:43,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785948364] [2020-10-14 18:18:43,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:18:43,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:18:43,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110993472] [2020-10-14 18:18:43,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:18:43,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:18:43,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:18:43,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:18:43,918 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 29 states. [2020-10-14 18:18:46,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:18:46,522 INFO L93 Difference]: Finished difference Result 210 states and 237 transitions. [2020-10-14 18:18:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 18:18:46,523 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-10-14 18:18:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:18:46,524 INFO L225 Difference]: With dead ends: 210 [2020-10-14 18:18:46,524 INFO L226 Difference]: Without dead ends: 173 [2020-10-14 18:18:46,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 18:18:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-14 18:18:46,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2020-10-14 18:18:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 18:18:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2020-10-14 18:18:46,547 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 100 [2020-10-14 18:18:46,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:18:46,547 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2020-10-14 18:18:46,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:18:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2020-10-14 18:18:46,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 18:18:46,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:18:46,549 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:18:46,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:18:46,550 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:18:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:18:46,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1769040431, now seen corresponding path program 23 times [2020-10-14 18:18:46,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:18:46,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992053862] [2020-10-14 18:18:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:18:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:46,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:47,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:51,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:51,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 18:18:51,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:18:51,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:18:51,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:51,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 18:18:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 18:18:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 18:18:51,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:52,365 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 22 [2020-10-14 18:18:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:18:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:52,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:52,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:18:52,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:18:52,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:52,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:52,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:18:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:52,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:52,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:52,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:18:52,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:52,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:18:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:18:52,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:18:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:52,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:18:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:52,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:18:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:18:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:18:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:53,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:53,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:53,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:53,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:53,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:53,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:53,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:18:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:53,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:53,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:53,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:53,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:18:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:53,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:53,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:53,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:53,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:53,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:53,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:18:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:53,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:53,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:53,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:53,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:53,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:53,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:53,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:53,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:53,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:18:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:53,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:53,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:18:53,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:18:53,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:18:53,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:18:53,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:18:53,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:18:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:18:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:18:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:18:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:18:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 11 proven. 152 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 18:18:53,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992053862] [2020-10-14 18:18:53,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:18:53,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:18:53,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054855029] [2020-10-14 18:18:53,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:18:53,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:18:53,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:18:53,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:18:53,145 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand 26 states. [2020-10-14 18:18:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:18:55,511 INFO L93 Difference]: Finished difference Result 158 states and 171 transitions. [2020-10-14 18:18:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:18:55,511 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 102 [2020-10-14 18:18:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:18:55,514 INFO L225 Difference]: With dead ends: 158 [2020-10-14 18:18:55,514 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 18:18:55,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 18:18:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 18:18:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 121. [2020-10-14 18:18:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 18:18:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2020-10-14 18:18:55,536 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 102 [2020-10-14 18:18:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:18:55,536 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2020-10-14 18:18:55,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:18:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2020-10-14 18:18:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 18:18:55,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:18:55,538 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:18:55,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:18:55,538 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:18:55,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:18:55,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1292882121, now seen corresponding path program 24 times [2020-10-14 18:18:55,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:18:55,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777972001] [2020-10-14 18:18:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:18:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:18:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:55,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:18:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 18:19:00,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:19:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 18:19:00,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:19:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 18:19:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 18:19:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:19:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:00,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:19:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:19:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:00,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:19:00,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:19:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:00,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:00,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:19:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:00,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:00,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:00,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:19:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:00,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:00,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:00,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:19:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:00,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:00,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:00,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:19:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:00,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:00,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:00,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:00,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:19:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:00,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:00,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:00,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:19:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:00,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:00,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:00,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:00,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:19:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 112 proven. 49 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-14 18:19:00,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777972001] [2020-10-14 18:19:00,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:19:00,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:19:00,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884081497] [2020-10-14 18:19:00,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:19:00,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:19:00,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:19:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:19:00,831 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 20 states. [2020-10-14 18:19:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:19:01,688 INFO L93 Difference]: Finished difference Result 195 states and 203 transitions. [2020-10-14 18:19:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:19:01,689 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 106 [2020-10-14 18:19:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:19:01,691 INFO L225 Difference]: With dead ends: 195 [2020-10-14 18:19:01,691 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 18:19:01,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:19:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 18:19:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2020-10-14 18:19:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 18:19:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-14 18:19:01,713 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 106 [2020-10-14 18:19:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:19:01,714 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-14 18:19:01,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:19:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-14 18:19:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 18:19:01,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:19:01,716 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:19:01,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:19:01,716 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:19:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:19:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash -838285307, now seen corresponding path program 25 times [2020-10-14 18:19:01,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:19:01,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497865489] [2020-10-14 18:19:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:19:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:02,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:06,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:06,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:19:06,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:19:06,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:19:06,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:06,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:06,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:19:06,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 18:19:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 18:19:06,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:19:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:07,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:07,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:19:07,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:07,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:07,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:07,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:19:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:07,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:07,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:07,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:19:07,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:07,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:19:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:07,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:07,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:07,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:19:07,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:07,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:19:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:07,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:07,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:07,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:07,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:07,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:19:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:07,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:07,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:07,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:07,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:07,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:07,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:07,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:07,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:19:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:07,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:07,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:07,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:07,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:07,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:07,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:07,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:19:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:07,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:07,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:07,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:07,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:19:07,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:07,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:19:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:19:07,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:19:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:07,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:07,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:07,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:07,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:07,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:07,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:07,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:19:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:07,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:07,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:07,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:07,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:07,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:07,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 25 proven. 169 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 18:19:07,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497865489] [2020-10-14 18:19:07,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:19:07,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:19:07,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860266173] [2020-10-14 18:19:07,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:19:07,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:19:07,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:19:07,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:19:07,673 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 27 states. [2020-10-14 18:19:10,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:19:10,376 INFO L93 Difference]: Finished difference Result 150 states and 164 transitions. [2020-10-14 18:19:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 18:19:10,379 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 110 [2020-10-14 18:19:10,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:19:10,380 INFO L225 Difference]: With dead ends: 150 [2020-10-14 18:19:10,381 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 18:19:10,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=218, Invalid=2644, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 18:19:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 18:19:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 132. [2020-10-14 18:19:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-14 18:19:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2020-10-14 18:19:10,410 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 110 [2020-10-14 18:19:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:19:10,410 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2020-10-14 18:19:10,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:19:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2020-10-14 18:19:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 18:19:10,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:19:10,412 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:19:10,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:19:10,412 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:19:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:19:10,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1657436227, now seen corresponding path program 26 times [2020-10-14 18:19:10,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:19:10,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035311425] [2020-10-14 18:19:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:19:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:10,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:10,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:11,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:15,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:15,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 18:19:15,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:19:15,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:19:15,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:15,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 18:19:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:19:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 18:19:15,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:19:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:16,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:16,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:19:16,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:16,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:16,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:16,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:19:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:16,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:16,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:16,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:16,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:19:16,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:16,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:19:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:16,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:16,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:16,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:16,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:16,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:16,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:19:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:16,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:16,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:16,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:16,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:16,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:19:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:16,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:16,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:16,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:16,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:19:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:19:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:19:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:16,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:16,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:16,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:16,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:19:16,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:16,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:19:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:19:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:16,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:16,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:16,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:16,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:16,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:16,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:16,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:16,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:19:16,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:16,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:19:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:16,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:16,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:16,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:19:16,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:16,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:19:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 18:19:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:16,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:16,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:16,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:16,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:16,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:19:16,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 90 proven. 145 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-14 18:19:16,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035311425] [2020-10-14 18:19:16,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:19:16,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:19:16,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322658623] [2020-10-14 18:19:16,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:19:16,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:19:16,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:19:16,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:19:16,349 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand 29 states. [2020-10-14 18:19:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:19:18,247 INFO L93 Difference]: Finished difference Result 236 states and 264 transitions. [2020-10-14 18:19:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:19:18,248 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 112 [2020-10-14 18:19:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:19:18,249 INFO L225 Difference]: With dead ends: 236 [2020-10-14 18:19:18,249 INFO L226 Difference]: Without dead ends: 187 [2020-10-14 18:19:18,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=280, Invalid=2072, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 18:19:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-14 18:19:18,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 152. [2020-10-14 18:19:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 18:19:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 164 transitions. [2020-10-14 18:19:18,281 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 164 transitions. Word has length 112 [2020-10-14 18:19:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:19:18,281 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 164 transitions. [2020-10-14 18:19:18,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:19:18,281 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 164 transitions. [2020-10-14 18:19:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 18:19:18,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:19:18,283 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:19:18,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:19:18,283 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:19:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:19:18,284 INFO L82 PathProgramCache]: Analyzing trace with hash -753880767, now seen corresponding path program 27 times [2020-10-14 18:19:18,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:19:18,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102175447] [2020-10-14 18:19:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:19:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:18,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:18,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:19,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:23,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:23,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 18:19:23,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:19:23,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:19:23,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:23,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:19:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 18:19:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 18:19:23,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:19:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:24,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:24,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:19:24,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:24,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:24,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:24,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:19:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:19:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:24,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:24,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:24,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:24,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:19:24,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:24,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:24,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:24,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:19:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:24,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:24,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:24,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:24,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:24,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:24,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:19:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:24,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:24,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:24,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:24,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:24,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:24,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:24,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:24,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:24,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:19:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:24,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:24,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:24,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:24,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:24,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:24,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:19:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:24,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:24,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:24,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:24,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:24,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:19:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:24,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:24,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:24,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:24,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:24,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:24,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:19:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:24,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:24,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:24,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:24,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:19:24,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:24,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:19:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:19:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:24,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:19:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:24,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:24,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:24,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:24,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:24,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 28 proven. 183 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-14 18:19:24,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102175447] [2020-10-14 18:19:24,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:19:24,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:19:24,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350706364] [2020-10-14 18:19:24,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:19:24,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:19:24,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:19:24,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:19:24,182 INFO L87 Difference]: Start difference. First operand 152 states and 164 transitions. Second operand 28 states. [2020-10-14 18:19:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:19:27,003 INFO L93 Difference]: Finished difference Result 172 states and 187 transitions. [2020-10-14 18:19:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:19:27,003 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 114 [2020-10-14 18:19:27,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:19:27,004 INFO L225 Difference]: With dead ends: 172 [2020-10-14 18:19:27,005 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 18:19:27,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=229, Invalid=2321, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 18:19:27,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 18:19:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 131. [2020-10-14 18:19:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 18:19:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 137 transitions. [2020-10-14 18:19:27,031 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 137 transitions. Word has length 114 [2020-10-14 18:19:27,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:19:27,032 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 137 transitions. [2020-10-14 18:19:27,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:19:27,032 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 137 transitions. [2020-10-14 18:19:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 18:19:27,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:19:27,033 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:19:27,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:19:27,034 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:19:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:19:27,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2032660443, now seen corresponding path program 28 times [2020-10-14 18:19:27,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:19:27,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226546663] [2020-10-14 18:19:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:19:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:27,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:27,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:30,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 18:19:32,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:19:32,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:19:32,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:19:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 18:19:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 18:19:32,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:19:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:19:32,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:32,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:32,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:19:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:32,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:19:32,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:32,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:19:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:32,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:32,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:32,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:19:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:32,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:32,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:32,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:32,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:19:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:32,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:32,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:32,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:32,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:19:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:32,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:32,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:19:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:32,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:32,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:32,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:19:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:32,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:32,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:19:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:32,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:32,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:19:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:32,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:32,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:32,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:32,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:32,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:32,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 144 proven. 64 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-10-14 18:19:32,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226546663] [2020-10-14 18:19:32,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:19:32,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:19:32,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059385030] [2020-10-14 18:19:32,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:19:32,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:19:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:19:32,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:19:32,369 INFO L87 Difference]: Start difference. First operand 131 states and 137 transitions. Second operand 22 states. [2020-10-14 18:19:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:19:33,284 INFO L93 Difference]: Finished difference Result 209 states and 219 transitions. [2020-10-14 18:19:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:19:33,285 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2020-10-14 18:19:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:19:33,287 INFO L225 Difference]: With dead ends: 209 [2020-10-14 18:19:33,288 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 18:19:33,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=758, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:19:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 18:19:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 115. [2020-10-14 18:19:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 18:19:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2020-10-14 18:19:33,311 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 118 [2020-10-14 18:19:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:19:33,311 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2020-10-14 18:19:33,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:19:33,311 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2020-10-14 18:19:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 18:19:33,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:19:33,312 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:19:33,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:19:33,313 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:19:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:19:33,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1874797289, now seen corresponding path program 29 times [2020-10-14 18:19:33,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:19:33,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116535018] [2020-10-14 18:19:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:19:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:33,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:34,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:38,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:38,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 18:19:38,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:19:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:19:38,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:38,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:19:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 18:19:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 18:19:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:19:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:19:39,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:39,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:19:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:39,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:19:39,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:39,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:19:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:39,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:39,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:19:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:39,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:39,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:39,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:39,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:19:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:39,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:39,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:19:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:39,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:39,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:39,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:19:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:39,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:39,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:19:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:39,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:39,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:39,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:39,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:19:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:39,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:39,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:19:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:39,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:39,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:39,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:39,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:19:39,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:39,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:19:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:19:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 36 proven. 210 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-10-14 18:19:39,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116535018] [2020-10-14 18:19:39,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:19:39,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:19:39,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905924451] [2020-10-14 18:19:39,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:19:39,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:19:39,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:19:39,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:19:39,120 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand 29 states. [2020-10-14 18:19:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:19:42,493 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2020-10-14 18:19:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 18:19:42,494 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 122 [2020-10-14 18:19:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:19:42,497 INFO L225 Difference]: With dead ends: 164 [2020-10-14 18:19:42,497 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 18:19:42,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=258, Invalid=3524, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 18:19:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 18:19:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 140. [2020-10-14 18:19:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 18:19:42,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2020-10-14 18:19:42,555 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 122 [2020-10-14 18:19:42,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:19:42,555 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2020-10-14 18:19:42,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:19:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2020-10-14 18:19:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 18:19:42,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:19:42,557 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:19:42,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:19:42,558 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:19:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:19:42,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1717506133, now seen corresponding path program 30 times [2020-10-14 18:19:42,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:19:42,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440966983] [2020-10-14 18:19:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:19:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:44,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:47,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:47,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:47,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 18:19:47,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:19:47,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:19:47,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:47,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 18:19:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:19:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 18:19:47,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:19:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:19:49,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:49,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:19:49,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:19:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:49,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:19:49,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:19:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:19:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:19:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:49,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:19:49,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:49,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:49,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:19:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:49,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:49,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:19:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:49,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:49,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:19:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:49,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:19:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:49,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:49,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 18:19:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:49,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:49,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:49,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 18:19:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:49,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:49,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:49,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 18:19:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:49,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:49,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:49,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:19:49,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:19:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:19:49,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:49,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:19:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:19:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:19:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:19:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 128 proven. 116 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-14 18:19:49,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440966983] [2020-10-14 18:19:49,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:19:49,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 18:19:49,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750867582] [2020-10-14 18:19:49,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 18:19:49,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:19:49,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 18:19:49,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:19:49,260 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand 38 states. [2020-10-14 18:19:50,290 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-14 18:19:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:19:54,042 INFO L93 Difference]: Finished difference Result 244 states and 276 transitions. [2020-10-14 18:19:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 18:19:54,043 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 124 [2020-10-14 18:19:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:19:54,045 INFO L225 Difference]: With dead ends: 244 [2020-10-14 18:19:54,045 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 18:19:54,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=694, Invalid=3466, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 18:19:54,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 18:19:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-10-14 18:19:54,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 18:19:54,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2020-10-14 18:19:54,083 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 124 [2020-10-14 18:19:54,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:19:54,083 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2020-10-14 18:19:54,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 18:19:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2020-10-14 18:19:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 18:19:54,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:19:54,087 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:19:54,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:19:54,087 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:19:54,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:19:54,087 INFO L82 PathProgramCache]: Analyzing trace with hash -317604781, now seen corresponding path program 31 times [2020-10-14 18:19:54,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:19:54,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733542903] [2020-10-14 18:19:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:19:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:19:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:54,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:19:59,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:19:59,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 18:19:59,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:19:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:19:59,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:19:59,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:19:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 18:19:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 18:19:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 18:19:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0