/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-tiling/rewrev.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:09:54,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:09:54,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:09:54,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:09:54,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:09:54,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:09:54,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:09:54,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:09:54,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:09:54,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:09:54,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:09:54,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:09:54,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:09:54,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:09:54,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:09:54,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:09:54,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:09:54,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:09:54,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:09:54,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:09:54,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:09:54,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:09:54,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:09:54,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:09:54,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:09:54,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:09:54,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:09:54,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:09:54,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:09:54,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:09:54,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:09:54,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:09:54,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:09:54,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:09:54,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:09:54,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:09:54,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:09:54,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:09:54,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:09:54,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:09:54,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:09:54,839 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 00:09:54,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:09:54,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:09:54,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:09:54,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:09:54,882 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:09:54,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:09:54,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:09:54,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:09:54,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:09:54,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:09:54,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:09:54,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:09:54,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:09:54,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:09:54,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:09:54,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:09:54,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:09:54,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:09:54,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:09:54,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:09:54,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:09:54,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:09:54,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:09:54,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:09:54,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:09:54,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:09:54,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:09:54,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:09:54,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:09:54,888 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:09:55,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:09:55,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:09:55,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:09:55,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:09:55,281 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:09:55,282 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-14 00:09:55,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510e89b87/fc0a5de7bf464d369bb186c704ac41c1/FLAG9195c7ebd [2020-10-14 00:09:55,801 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:09:55,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-14 00:09:55,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510e89b87/fc0a5de7bf464d369bb186c704ac41c1/FLAG9195c7ebd [2020-10-14 00:09:56,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510e89b87/fc0a5de7bf464d369bb186c704ac41c1 [2020-10-14 00:09:56,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:09:56,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:09:56,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:09:56,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:09:56,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:09:56,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:09:56" (1/1) ... [2020-10-14 00:09:56,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d971ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56, skipping insertion in model container [2020-10-14 00:09:56,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:09:56" (1/1) ... [2020-10-14 00:09:56,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:09:56,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:09:56,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:09:56,492 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:09:56,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:09:56,543 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:09:56,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56 WrapperNode [2020-10-14 00:09:56,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:09:56,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:09:56,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:09:56,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:09:56,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56" (1/1) ... [2020-10-14 00:09:56,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56" (1/1) ... [2020-10-14 00:09:56,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56" (1/1) ... [2020-10-14 00:09:56,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56" (1/1) ... [2020-10-14 00:09:56,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56" (1/1) ... [2020-10-14 00:09:56,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56" (1/1) ... [2020-10-14 00:09:56,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56" (1/1) ... [2020-10-14 00:09:56,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:09:56,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:09:56,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:09:56,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:09:56,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56" (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 00:09:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:09:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:09:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 00:09:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:09:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:09:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:09:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 00:09:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 00:09:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:09:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:09:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 00:09:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:09:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 00:09:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 00:09:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 00:09:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:09:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:09:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:09:57,058 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:09:57,059 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 00:09:57,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:09:57 BoogieIcfgContainer [2020-10-14 00:09:57,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:09:57,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:09:57,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:09:57,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:09:57,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:09:56" (1/3) ... [2020-10-14 00:09:57,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1c3eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:09:57, skipping insertion in model container [2020-10-14 00:09:57,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:56" (2/3) ... [2020-10-14 00:09:57,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1c3eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:09:57, skipping insertion in model container [2020-10-14 00:09:57,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:09:57" (3/3) ... [2020-10-14 00:09:57,076 INFO L109 eAbstractionObserver]: Analyzing ICFG rewrev.c [2020-10-14 00:09:57,091 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:09:57,100 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:09:57,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:09:57,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:09:57,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:09:57,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:09:57,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:09:57,180 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:09:57,180 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:09:57,181 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:09:57,181 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:09:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 00:09:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 00:09:57,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:57,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:57,223 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:57,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1564765221, now seen corresponding path program 1 times [2020-10-14 00:09:57,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:57,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785016014] [2020-10-14 00:09:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:57,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:57,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:57,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:09:57,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 00:09:57,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:57,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:09:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:09:57,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:57,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:57,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:57,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:57,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:09:57,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:57,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:57,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:57,643 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 00:09:57,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785016014] [2020-10-14 00:09:57,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:09:57,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:09:57,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580125203] [2020-10-14 00:09:57,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:09:57,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:57,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:09:57,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:09:57,672 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-14 00:09:57,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:57,814 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2020-10-14 00:09:57,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:09:57,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 00:09:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:57,826 INFO L225 Difference]: With dead ends: 54 [2020-10-14 00:09:57,826 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 00:09:57,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:09:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 00:09:57,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-14 00:09:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 00:09:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-14 00:09:57,879 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2020-10-14 00:09:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:57,880 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-14 00:09:57,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:09:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-14 00:09:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 00:09:57,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:57,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:57,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:09:57,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1138009376, now seen corresponding path program 1 times [2020-10-14 00:09:57,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:57,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755935266] [2020-10-14 00:09:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:57,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:58,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 00:09:58,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:09:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 00:09:58,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:58,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:09:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:09:58,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:58,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:09:58,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:58,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:09:58,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755935266] [2020-10-14 00:09:58,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:58,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:09:58,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799630602] [2020-10-14 00:09:58,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:09:58,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:58,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:09:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:09:58,229 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-14 00:09:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:58,350 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-14 00:09:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:09:58,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-14 00:09:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:58,352 INFO L225 Difference]: With dead ends: 38 [2020-10-14 00:09:58,352 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 00:09:58,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:09:58,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 00:09:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-14 00:09:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 00:09:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-14 00:09:58,361 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2020-10-14 00:09:58,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:58,362 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-14 00:09:58,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:09:58,362 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-14 00:09:58,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 00:09:58,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:58,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:58,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:09:58,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1844234969, now seen corresponding path program 1 times [2020-10-14 00:09:58,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:58,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491229966] [2020-10-14 00:09:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:58,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:59,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:59,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 00:09:59,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:09:59,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-10-14 00:09:59,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:59,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:59,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:09:59,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:09:59,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:59,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:59,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:59,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:59,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:59,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:59,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:59,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:59,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:59,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:59,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:59,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:59,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:09:59,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491229966] [2020-10-14 00:09:59,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:59,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:09:59,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686526996] [2020-10-14 00:09:59,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:09:59,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:59,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:09:59,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:09:59,866 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 11 states. [2020-10-14 00:10:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:00,207 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-14 00:10:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:10:00,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-14 00:10:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:00,209 INFO L225 Difference]: With dead ends: 39 [2020-10-14 00:10:00,209 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 00:10:00,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:10:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 00:10:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-10-14 00:10:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 00:10:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-14 00:10:00,219 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2020-10-14 00:10:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:00,220 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-14 00:10:00,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:10:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-14 00:10:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 00:10:00,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:00,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:00,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:10:00,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:00,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:00,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2097899152, now seen corresponding path program 1 times [2020-10-14 00:10:00,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:00,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524991814] [2020-10-14 00:10:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:00,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:02,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 00:10:02,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:10:02,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-10-14 00:10:02,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:02,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:10:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:10:02,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:02,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:02,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:02,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:02,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:02,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:02,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:02,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:02,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 00:10:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:02,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:02,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:02,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:02,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:02,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:02,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:10:02,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524991814] [2020-10-14 00:10:02,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:02,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:10:02,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106037361] [2020-10-14 00:10:02,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:10:02,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:02,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:10:02,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:10:02,285 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 13 states. [2020-10-14 00:10:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:02,798 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-14 00:10:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:10:02,798 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-10-14 00:10:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:02,803 INFO L225 Difference]: With dead ends: 59 [2020-10-14 00:10:02,803 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 00:10:02,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:10:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 00:10:02,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-10-14 00:10:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 00:10:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-10-14 00:10:02,820 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 30 [2020-10-14 00:10:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:02,820 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-10-14 00:10:02,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:10:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-10-14 00:10:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 00:10:02,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:02,823 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:02,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:10:02,823 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:02,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2101851765, now seen corresponding path program 2 times [2020-10-14 00:10:02,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:02,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900423888] [2020-10-14 00:10:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:02,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:03,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:03,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:03,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:05,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:05,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 00:10:05,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:10:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2300 [2020-10-14 00:10:05,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:05,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:10:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 00:10:05,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:05,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:05,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:05,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:05,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:05,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 00:10:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:05,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:05,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:05,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:10:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:05,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 00:10:05,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900423888] [2020-10-14 00:10:05,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:05,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:10:05,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844987169] [2020-10-14 00:10:05,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:10:05,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:05,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:10:05,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:10:05,402 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 14 states. [2020-10-14 00:10:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:05,989 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-14 00:10:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:10:05,990 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-14 00:10:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:05,992 INFO L225 Difference]: With dead ends: 64 [2020-10-14 00:10:05,992 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 00:10:05,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:10:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 00:10:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 41. [2020-10-14 00:10:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 00:10:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-14 00:10:06,003 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 34 [2020-10-14 00:10:06,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:06,003 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-14 00:10:06,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:10:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-14 00:10:06,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 00:10:06,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:06,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:06,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:10:06,005 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:06,006 INFO L82 PathProgramCache]: Analyzing trace with hash -95790265, now seen corresponding path program 3 times [2020-10-14 00:10:06,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:06,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141477419] [2020-10-14 00:10:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:06,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 00:10:06,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:10:06,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 00:10:06,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:06,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:10:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 00:10:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:06,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:06,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:06,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:06,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:06,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:06,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 00:10:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:06,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:06,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:06,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:06,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:06,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:06,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:10:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:06,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:06,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:06,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:10:06,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:06,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:10:06,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141477419] [2020-10-14 00:10:06,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:06,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:10:06,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982152720] [2020-10-14 00:10:06,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:10:06,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:06,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:10:06,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:10:06,440 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 9 states. [2020-10-14 00:10:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:06,699 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2020-10-14 00:10:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:10:06,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 00:10:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:06,701 INFO L225 Difference]: With dead ends: 88 [2020-10-14 00:10:06,701 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 00:10:06,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:10:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 00:10:06,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2020-10-14 00:10:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 00:10:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-14 00:10:06,711 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2020-10-14 00:10:06,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:06,712 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-14 00:10:06,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:10:06,712 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-14 00:10:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 00:10:06,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:06,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:06,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:10:06,714 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:06,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:06,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1561203522, now seen corresponding path program 4 times [2020-10-14 00:10:06,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:06,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588878467] [2020-10-14 00:10:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:07,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:07,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:07,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:08,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:10:08,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:10:08,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2075 [2020-10-14 00:10:08,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:08,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:10:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:10:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:09,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:09,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:09,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:09,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:09,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:09,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:09,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 00:10:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:09,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:09,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:09,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:10:09,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:09,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:09,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:09,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:10:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:09,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:09,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:09,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:09,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:10:09,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:09,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:09,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:09,309 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:10:09,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588878467] [2020-10-14 00:10:09,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:09,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:10:09,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709890662] [2020-10-14 00:10:09,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:10:09,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:09,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:10:09,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:10:09,314 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 16 states. [2020-10-14 00:10:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:10,404 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-10-14 00:10:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:10:10,405 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-14 00:10:10,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:10,406 INFO L225 Difference]: With dead ends: 74 [2020-10-14 00:10:10,406 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 00:10:10,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:10:10,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 00:10:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-14 00:10:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 00:10:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 00:10:10,425 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 42 [2020-10-14 00:10:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:10,425 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 00:10:10,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:10:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 00:10:10,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 00:10:10,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:10,432 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:10,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:10:10,433 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:10,433 INFO L82 PathProgramCache]: Analyzing trace with hash -957393475, now seen corresponding path program 5 times [2020-10-14 00:10:10,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:10,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354475918] [2020-10-14 00:10:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:10,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:12,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 00:10:12,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:10:12,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2343 [2020-10-14 00:10:12,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:12,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:10:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 00:10:12,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:10:13,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:13,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:13,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:13,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:13,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:13,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:13,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:13,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:13,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:10:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:13,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:13,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:13,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:13,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:13,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:13,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:13,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:13,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:10:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:13,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:13,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:13,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:13,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:13,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:13,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 00:10:13,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354475918] [2020-10-14 00:10:13,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:13,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:10:13,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336467370] [2020-10-14 00:10:13,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:10:13,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:13,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:10:13,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:10:13,125 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 14 states. [2020-10-14 00:10:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:13,963 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-10-14 00:10:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:10:13,963 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-14 00:10:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:13,965 INFO L225 Difference]: With dead ends: 66 [2020-10-14 00:10:13,965 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 00:10:13,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:10:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 00:10:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-14 00:10:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 00:10:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 00:10:13,974 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 46 [2020-10-14 00:10:13,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:13,975 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 00:10:13,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:10:13,975 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 00:10:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 00:10:13,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:13,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:13,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:10:13,977 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:13,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:13,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1529426572, now seen corresponding path program 6 times [2020-10-14 00:10:13,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:13,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501483689] [2020-10-14 00:10:13,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:13,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:16,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:16,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:10:16,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:10:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2422 [2020-10-14 00:10:16,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:16,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:10:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 00:10:16,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:16,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:16,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:16,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:16,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:10:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:16,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:16,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:10:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:16,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:16,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:16,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:10:16,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:16,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:16,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:16,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:10:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:16,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:16,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:16,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:10:16,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:16,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 00:10:16,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501483689] [2020-10-14 00:10:16,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:16,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:10:16,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029651517] [2020-10-14 00:10:16,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:10:16,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:16,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:10:16,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:10:16,880 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 15 states. [2020-10-14 00:10:17,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:17,659 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-10-14 00:10:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:10:17,660 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-14 00:10:17,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:17,662 INFO L225 Difference]: With dead ends: 119 [2020-10-14 00:10:17,662 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 00:10:17,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:10:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 00:10:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 69. [2020-10-14 00:10:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 00:10:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-10-14 00:10:17,676 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 54 [2020-10-14 00:10:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:17,676 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-10-14 00:10:17,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:10:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-10-14 00:10:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 00:10:17,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:17,677 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:17,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:10:17,679 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:17,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1512493201, now seen corresponding path program 7 times [2020-10-14 00:10:17,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:17,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340809978] [2020-10-14 00:10:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:17,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:19,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:19,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:20,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:20,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:10:20,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:10:20,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3093 [2020-10-14 00:10:20,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:20,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:20,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:10:20,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:20,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 00:10:20,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:21,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:21,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:21,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:21,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:21,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:21,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:21,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:10:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:21,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:21,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:21,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:21,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:21,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:21,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:21,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:21,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:21,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:10:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:21,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:21,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:21,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:21,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:21,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:21,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:21,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:21,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:21,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:10:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:21,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:21,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:21,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:21,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:21,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:21,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:21,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 00:10:21,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340809978] [2020-10-14 00:10:21,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:21,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:10:21,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028640196] [2020-10-14 00:10:21,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:10:21,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:21,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:10:21,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:10:21,218 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 16 states. [2020-10-14 00:10:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:22,578 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-10-14 00:10:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:10:22,579 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-14 00:10:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:22,582 INFO L225 Difference]: With dead ends: 89 [2020-10-14 00:10:22,582 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 00:10:22,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 00:10:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 00:10:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2020-10-14 00:10:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 00:10:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-10-14 00:10:22,608 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 58 [2020-10-14 00:10:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:22,609 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-10-14 00:10:22,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:10:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-10-14 00:10:22,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 00:10:22,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:22,612 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:22,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:10:22,613 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:22,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:22,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1536371418, now seen corresponding path program 8 times [2020-10-14 00:10:22,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:22,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766281024] [2020-10-14 00:10:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:22,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:27,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:27,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 00:10:27,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:10:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:10:27,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:27,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 00:10:27,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:27,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 00:10:27,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:28,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:28,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:28,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:28,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:28,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:28,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:28,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:10:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:28,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:28,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:28,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:28,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:28,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:28,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:10:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:28,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:28,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:28,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:28,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:28,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:28,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:28,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:10:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:28,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:28,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:28,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:28,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:28,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:28,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:10:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:28,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:28,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:28,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:28,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:28,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 00:10:28,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766281024] [2020-10-14 00:10:28,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:28,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:10:28,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113878642] [2020-10-14 00:10:28,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:10:28,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:28,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:10:28,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:10:28,214 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 18 states. [2020-10-14 00:10:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:29,016 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2020-10-14 00:10:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:10:29,017 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-10-14 00:10:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:29,018 INFO L225 Difference]: With dead ends: 144 [2020-10-14 00:10:29,018 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 00:10:29,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:10:29,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 00:10:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-10-14 00:10:29,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 00:10:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-10-14 00:10:29,036 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 66 [2020-10-14 00:10:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:29,036 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-10-14 00:10:29,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:10:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-10-14 00:10:29,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 00:10:29,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:29,038 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:29,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:10:29,038 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:29,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:29,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1302522207, now seen corresponding path program 9 times [2020-10-14 00:10:29,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:29,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738393107] [2020-10-14 00:10:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:29,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:33,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:34,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 00:10:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:10:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:10:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:34,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:10:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 00:10:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:34,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:34,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:34,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:34,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:34,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:34,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:34,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:34,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:34,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:34,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:10:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:34,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:34,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:34,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:34,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:34,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:34,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:34,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:34,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:34,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:10:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:34,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:34,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:34,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:34,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:34,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:10:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:34,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:34,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:34,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:34,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:34,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:34,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:34,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:10:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:34,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:34,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:34,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:34,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:10:34,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:34,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 95 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 00:10:34,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738393107] [2020-10-14 00:10:34,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:34,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:10:34,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327907600] [2020-10-14 00:10:34,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:10:34,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:34,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:10:34,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:10:34,700 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 17 states. [2020-10-14 00:10:36,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:36,622 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2020-10-14 00:10:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 00:10:36,624 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 00:10:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:36,625 INFO L225 Difference]: With dead ends: 133 [2020-10-14 00:10:36,625 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 00:10:36,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=327, Invalid=1565, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 00:10:36,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 00:10:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2020-10-14 00:10:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 00:10:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2020-10-14 00:10:36,642 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 70 [2020-10-14 00:10:36,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:36,642 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2020-10-14 00:10:36,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:10:36,643 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2020-10-14 00:10:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 00:10:36,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:36,644 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:36,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:10:36,644 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:36,645 INFO L82 PathProgramCache]: Analyzing trace with hash 144670237, now seen corresponding path program 10 times [2020-10-14 00:10:36,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:36,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853073431] [2020-10-14 00:10:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:36,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:40,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:40,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:40,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:41,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 00:10:41,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 00:10:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 00:10:41,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:41,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:10:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 00:10:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:10:41,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:41,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:41,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:41,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:41,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:41,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:10:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:41,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:41,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:41,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:41,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:41,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:10:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:10:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:41,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:41,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:41,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:41,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:41,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:10:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:41,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:41,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:10:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:41,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:41,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:41,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:41,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:41,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:41,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:10:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:41,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:41,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:10:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:41,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:41,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:41,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:41,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:10:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 00:10:41,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853073431] [2020-10-14 00:10:41,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:10:41,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:10:41,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640041720] [2020-10-14 00:10:41,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:10:41,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:41,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:10:41,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:10:41,743 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand 6 states. [2020-10-14 00:10:41,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:41,804 INFO L93 Difference]: Finished difference Result 177 states and 193 transitions. [2020-10-14 00:10:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:10:41,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-14 00:10:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:41,805 INFO L225 Difference]: With dead ends: 177 [2020-10-14 00:10:41,806 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 00:10:41,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:10:41,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 00:10:41,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-14 00:10:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 00:10:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-10-14 00:10:41,816 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 70 [2020-10-14 00:10:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:41,816 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-10-14 00:10:41,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:10:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-10-14 00:10:41,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 00:10:41,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:41,818 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:41,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:10:41,818 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:41,818 INFO L82 PathProgramCache]: Analyzing trace with hash 863464024, now seen corresponding path program 11 times [2020-10-14 00:10:41,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:41,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872549195] [2020-10-14 00:10:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:41,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:45,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:46,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:46,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 00:10:46,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 00:10:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:10:46,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:46,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 00:10:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 00:10:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:47,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:47,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:47,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:47,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:47,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:47,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:47,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:10:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:47,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:47,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:47,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:47,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:47,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:47,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:47,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:10:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:47,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:47,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:47,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:47,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:47,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:47,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:47,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:10:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:47,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:47,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:47,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:47,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:47,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:47,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:47,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:47,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:10:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:47,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:47,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:47,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:47,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:47,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:10:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:47,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:47,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:47,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:47,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:47,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 92 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 00:10:47,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872549195] [2020-10-14 00:10:47,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:47,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:10:47,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185474654] [2020-10-14 00:10:47,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:10:47,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:47,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:10:47,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:10:47,508 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 19 states. [2020-10-14 00:10:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:48,614 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2020-10-14 00:10:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:10:48,615 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-10-14 00:10:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:48,616 INFO L225 Difference]: With dead ends: 121 [2020-10-14 00:10:48,616 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 00:10:48,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:10:48,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 00:10:48,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-14 00:10:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 00:10:48,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-10-14 00:10:48,628 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 78 [2020-10-14 00:10:48,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:48,629 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-10-14 00:10:48,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:10:48,629 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-10-14 00:10:48,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 00:10:48,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:48,630 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:48,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:10:48,630 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:48,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1224586413, now seen corresponding path program 12 times [2020-10-14 00:10:48,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:48,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490521046] [2020-10-14 00:10:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:48,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:48,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:53,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:53,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 00:10:53,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:10:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:10:53,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:53,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 00:10:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 00:10:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:54,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:54,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:54,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:54,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:54,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:54,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:10:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:54,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:54,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:54,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:54,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:54,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:54,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:54,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:54,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:54,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:54,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:10:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:54,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:10:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:54,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:54,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:54,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:54,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:54,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:54,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:10:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:54,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:54,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:54,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:54,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:54,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:10:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:54,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:54,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:54,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:54,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:54,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:54,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 10 proven. 138 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-14 00:10:54,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490521046] [2020-10-14 00:10:54,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:54,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:10:54,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957716041] [2020-10-14 00:10:54,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:10:54,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:54,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:10:54,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:10:54,202 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 17 states. [2020-10-14 00:10:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:56,337 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-10-14 00:10:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 00:10:56,338 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-14 00:10:56,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:56,339 INFO L225 Difference]: With dead ends: 97 [2020-10-14 00:10:56,340 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 00:10:56,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 10 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=352, Invalid=1628, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 00:10:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 00:10:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2020-10-14 00:10:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 00:10:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-10-14 00:10:56,351 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 82 [2020-10-14 00:10:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:56,352 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-10-14 00:10:56,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:10:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-10-14 00:10:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 00:10:56,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:56,353 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:56,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:10:56,353 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:56,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1052914422, now seen corresponding path program 13 times [2020-10-14 00:10:56,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:56,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46091539] [2020-10-14 00:10:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:57,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:58,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:59,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:01,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:01,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 00:11:01,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:11:01,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:11:01,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:01,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 00:11:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 00:11:01,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:02,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:02,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:02,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:02,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:02,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:02,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:02,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:02,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:11:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:02,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:02,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:02,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:11:02,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:02,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:11:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:02,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:02,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:02,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:11:02,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:02,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:02,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:02,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:11:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:02,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:02,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:11:02,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:02,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:11:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:02,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:02,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:02,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:11:02,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:02,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:11:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:02,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:02,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:02,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:02,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:11:02,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:02,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:02,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:02,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:11:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:02,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:02,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:02,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:11:02,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:02,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:02,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 72 proven. 103 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 00:11:02,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46091539] [2020-10-14 00:11:02,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:02,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:11:02,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868360968] [2020-10-14 00:11:02,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:11:02,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:02,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:11:02,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:11:02,529 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 18 states. [2020-10-14 00:11:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:03,908 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2020-10-14 00:11:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:11:03,909 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-10-14 00:11:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:03,910 INFO L225 Difference]: With dead ends: 137 [2020-10-14 00:11:03,911 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 00:11:03,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 15 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:11:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 00:11:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-14 00:11:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 00:11:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2020-10-14 00:11:03,924 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 90 [2020-10-14 00:11:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:03,924 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2020-10-14 00:11:03,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:11:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2020-10-14 00:11:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 00:11:03,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:03,925 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:03,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:11:03,926 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:03,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:03,926 INFO L82 PathProgramCache]: Analyzing trace with hash -974123643, now seen corresponding path program 14 times [2020-10-14 00:11:03,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:03,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666338270] [2020-10-14 00:11:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:08,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:08,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 00:11:08,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:11:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:11:08,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:08,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 00:11:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 00:11:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:09,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:09,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:09,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:09,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:09,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:09,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:09,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:09,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:11:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:09,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:09,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:09,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:09,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:09,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:09,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:09,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:11:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:09,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:09,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:09,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:09,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:09,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:09,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:09,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:09,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:09,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:11:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:09,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:09,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:09,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:09,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:09,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:09,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:09,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:09,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:11:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:09,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:09,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:09,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:09,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:09,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:09,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:11:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:09,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:09,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:09,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:09,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:09,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:09,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:09,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:09,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:11:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:09,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:09,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:09,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:09,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:09,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 189 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 00:11:09,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666338270] [2020-10-14 00:11:09,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:09,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:11:09,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728620182] [2020-10-14 00:11:09,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:11:09,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:09,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:11:09,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:11:09,633 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 18 states. [2020-10-14 00:11:12,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:12,390 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2020-10-14 00:11:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 00:11:12,390 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2020-10-14 00:11:12,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:12,392 INFO L225 Difference]: With dead ends: 109 [2020-10-14 00:11:12,392 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 00:11:12,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 17 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=433, Invalid=2017, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 00:11:12,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 00:11:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-10-14 00:11:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 00:11:12,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2020-10-14 00:11:12,410 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 94 [2020-10-14 00:11:12,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:12,410 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2020-10-14 00:11:12,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:11:12,411 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2020-10-14 00:11:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 00:11:12,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:12,417 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:12,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:11:12,417 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:12,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:12,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1688681788, now seen corresponding path program 15 times [2020-10-14 00:11:12,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:12,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628988556] [2020-10-14 00:11:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:12,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:12,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:13,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:17,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:17,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:11:17,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:11:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:11:17,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:17,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 00:11:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 00:11:17,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:18,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:18,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:18,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:11:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:11:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:18,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:11:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:11:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:11:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:11:18,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:11:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:11:18,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:11:18,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:11:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:18,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:18,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:11:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:11:18,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:18,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:11:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:11:18,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 14 proven. 218 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 00:11:18,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628988556] [2020-10-14 00:11:18,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:18,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:11:18,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772856821] [2020-10-14 00:11:18,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:11:18,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:18,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:11:18,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:11:18,718 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 19 states. [2020-10-14 00:11:22,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:22,352 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2020-10-14 00:11:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 00:11:22,353 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-14 00:11:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:22,355 INFO L225 Difference]: With dead ends: 117 [2020-10-14 00:11:22,355 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 00:11:22,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 19 SyntacticMatches, 16 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=528, Invalid=2552, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 00:11:22,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 00:11:22,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-10-14 00:11:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 00:11:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2020-10-14 00:11:22,369 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 102 [2020-10-14 00:11:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:22,369 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2020-10-14 00:11:22,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:11:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2020-10-14 00:11:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 00:11:22,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:22,371 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:22,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:11:22,371 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:22,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:22,371 INFO L82 PathProgramCache]: Analyzing trace with hash -374684173, now seen corresponding path program 16 times [2020-10-14 00:11:22,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:22,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133186421] [2020-10-14 00:11:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:22,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 00:11:23,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:11:23,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-14 00:11:23,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:11:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 00:11:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:23,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:23,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:11:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:23,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:11:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:23,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:23,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:23,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:11:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:23,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:23,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:23,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:23,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:23,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:23,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:11:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:23,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:23,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:23,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:23,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:11:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:23,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:23,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:23,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:11:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:23,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:23,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:23,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:11:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:23,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:23,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:11:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:23,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:23,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:23,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:23,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:23,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:23,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 144 proven. 120 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 00:11:23,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133186421] [2020-10-14 00:11:23,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:23,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:11:23,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197045715] [2020-10-14 00:11:23,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:11:23,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:23,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:11:23,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:11:23,453 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 15 states. [2020-10-14 00:11:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:23,954 INFO L93 Difference]: Finished difference Result 204 states and 207 transitions. [2020-10-14 00:11:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:11:23,955 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2020-10-14 00:11:23,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:23,956 INFO L225 Difference]: With dead ends: 204 [2020-10-14 00:11:23,957 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 00:11:23,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:11:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 00:11:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-10-14 00:11:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 00:11:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2020-10-14 00:11:23,969 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 110 [2020-10-14 00:11:23,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:23,970 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2020-10-14 00:11:23,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:11:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2020-10-14 00:11:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 00:11:23,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:23,971 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:23,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:11:23,972 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash -331678994, now seen corresponding path program 17 times [2020-10-14 00:11:23,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:23,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546768250] [2020-10-14 00:11:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:24,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:24,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:28,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:28,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 00:11:29,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:11:29,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:11:29,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 00:11:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 00:11:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:29,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:29,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:29,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:29,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:29,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:29,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:29,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:29,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:29,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:29,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:11:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:29,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:29,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:29,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:29,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:29,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:29,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:29,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:11:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:29,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:29,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:11:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:29,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:29,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:29,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:29,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:29,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:29,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:11:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:29,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:29,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:29,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:29,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:29,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:29,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:29,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:29,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:11:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:29,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:29,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:29,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:29,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:29,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:11:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:29,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:29,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:29,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:29,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:29,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:11:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:29,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:29,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:29,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:29,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:29,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:11:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:29,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:29,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:29,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:29,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:29,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:29,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 37 proven. 260 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 00:11:30,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546768250] [2020-10-14 00:11:30,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:30,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 00:11:30,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143597277] [2020-10-14 00:11:30,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 00:11:30,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 00:11:30,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:11:30,047 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 28 states. [2020-10-14 00:11:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:34,533 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2020-10-14 00:11:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 00:11:34,534 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 114 [2020-10-14 00:11:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:34,535 INFO L225 Difference]: With dead ends: 129 [2020-10-14 00:11:34,536 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 00:11:34,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 19 SyntacticMatches, 13 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=738, Invalid=3818, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 00:11:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 00:11:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-14 00:11:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 00:11:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2020-10-14 00:11:34,548 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 114 [2020-10-14 00:11:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:34,549 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2020-10-14 00:11:34,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 00:11:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2020-10-14 00:11:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 00:11:34,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:34,550 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:34,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:11:34,551 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:34,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:34,551 INFO L82 PathProgramCache]: Analyzing trace with hash -876170843, now seen corresponding path program 18 times [2020-10-14 00:11:34,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:34,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830057283] [2020-10-14 00:11:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:34,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 00:11:35,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:11:35,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-10-14 00:11:35,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:11:35,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:35,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 00:11:35,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:35,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:11:35,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:35,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:11:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:35,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:35,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:11:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:35,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:35,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:11:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:35,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:35,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:35,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:11:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:11:35,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:11:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:35,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:11:35,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:11:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:35,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:35,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:35,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:11:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:35,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:35,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:11:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:35,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:35,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:11:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:35,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:35,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:35,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:35,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 180 proven. 153 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 00:11:35,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830057283] [2020-10-14 00:11:35,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:35,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:11:35,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160447226] [2020-10-14 00:11:35,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:11:35,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:35,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:11:35,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:11:35,928 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 15 states. [2020-10-14 00:11:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:36,624 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2020-10-14 00:11:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:11:36,625 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 122 [2020-10-14 00:11:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:36,627 INFO L225 Difference]: With dead ends: 218 [2020-10-14 00:11:36,627 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 00:11:36,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:11:36,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 00:11:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-14 00:11:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 00:11:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2020-10-14 00:11:36,654 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 122 [2020-10-14 00:11:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:36,655 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2020-10-14 00:11:36,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:11:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2020-10-14 00:11:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 00:11:36,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:36,660 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:36,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:11:36,660 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:36,661 INFO L82 PathProgramCache]: Analyzing trace with hash -299874784, now seen corresponding path program 19 times [2020-10-14 00:11:36,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:36,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440383246] [2020-10-14 00:11:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:38,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:41,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:41,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:41,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 00:11:41,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:11:41,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 00:11:41,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:41,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 00:11:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 00:11:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:42,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:42,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:42,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:42,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:42,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:42,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:42,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:42,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:42,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:11:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:42,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:42,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:42,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:42,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:42,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:42,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:42,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:11:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:43,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:43,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:43,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:43,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:43,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:43,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:11:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:43,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:43,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:43,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:43,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:43,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:11:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:43,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:43,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:43,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:43,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:43,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:43,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:43,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:43,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:11:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:43,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:43,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:43,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:43,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:43,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:43,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:43,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:43,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:11:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:43,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:43,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:43,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:43,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:43,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:43,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:43,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:43,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:43,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:11:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:43,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:43,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:43,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:43,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:43,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:43,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:43,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:11:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:43,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:43,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:43,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:43,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:43,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:43,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:43,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:11:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:43,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:43,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:43,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:43,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:43,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 130 proven. 240 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 00:11:43,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440383246] [2020-10-14 00:11:43,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:43,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:11:43,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270748894] [2020-10-14 00:11:43,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:11:43,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:11:43,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:11:43,123 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 22 states. [2020-10-14 00:11:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:44,678 INFO L93 Difference]: Finished difference Result 185 states and 196 transitions. [2020-10-14 00:11:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 00:11:44,680 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2020-10-14 00:11:44,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:44,681 INFO L225 Difference]: With dead ends: 185 [2020-10-14 00:11:44,682 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 00:11:44,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 22 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=302, Invalid=1104, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 00:11:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 00:11:44,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-10-14 00:11:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 00:11:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2020-10-14 00:11:44,697 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 126 [2020-10-14 00:11:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:44,697 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2020-10-14 00:11:44,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:11:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2020-10-14 00:11:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 00:11:44,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:44,698 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:44,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:11:44,699 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:44,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:44,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1750410523, now seen corresponding path program 20 times [2020-10-14 00:11:44,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:44,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183892] [2020-10-14 00:11:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:45,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:45,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:45,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:49,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:49,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 00:11:49,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:11:49,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:11:49,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:49,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 00:11:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 00:11:49,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:50,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:50,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:11:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:50,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:50,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:11:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:50,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:50,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:11:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:50,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:50,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:11:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:50,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:50,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:11:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:50,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:50,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:50,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:11:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:50,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:50,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:50,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:11:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:50,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:50,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:11:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:50,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:50,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:50,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:11:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:50,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:50,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 18 proven. 390 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-14 00:11:50,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183892] [2020-10-14 00:11:50,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:50,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:11:50,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795770507] [2020-10-14 00:11:50,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:11:50,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:50,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:11:50,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:11:50,802 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 22 states. [2020-10-14 00:11:53,917 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-14 00:11:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:55,510 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2020-10-14 00:11:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 00:11:55,511 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 130 [2020-10-14 00:11:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:55,513 INFO L225 Difference]: With dead ends: 145 [2020-10-14 00:11:55,513 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 00:11:55,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 23 SyntacticMatches, 21 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=743, Invalid=3679, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 00:11:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 00:11:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2020-10-14 00:11:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 00:11:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2020-10-14 00:11:55,530 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 130 [2020-10-14 00:11:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:55,530 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2020-10-14 00:11:55,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:11:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2020-10-14 00:11:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 00:11:55,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:55,532 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:55,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:11:55,532 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash -669098286, now seen corresponding path program 21 times [2020-10-14 00:11:55,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:55,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787256394] [2020-10-14 00:11:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:00,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:00,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 00:12:00,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:12:00,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:12:00,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:00,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-14 00:12:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 00:12:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:02,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:02,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:12:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:02,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:12:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:02,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:12:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:02,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:12:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:02,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:12:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:02,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:12:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:02,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:12:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:02,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:12:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:02,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:12:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:02,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:12:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:02,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:02,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:02,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 20 proven. 431 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 00:12:02,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787256394] [2020-10-14 00:12:02,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:02,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 00:12:02,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286892664] [2020-10-14 00:12:02,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 00:12:02,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:02,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 00:12:02,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:12:02,299 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 31 states. [2020-10-14 00:12:04,844 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-14 00:12:05,835 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2020-10-14 00:12:06,024 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2020-10-14 00:12:06,216 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2020-10-14 00:12:06,408 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2020-10-14 00:12:06,569 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2020-10-14 00:12:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:08,912 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2020-10-14 00:12:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 00:12:08,913 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 138 [2020-10-14 00:12:08,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:08,914 INFO L225 Difference]: With dead ends: 153 [2020-10-14 00:12:08,914 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 00:12:08,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 25 SyntacticMatches, 17 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1061, Invalid=5259, Unknown=0, NotChecked=0, Total=6320 [2020-10-14 00:12:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 00:12:08,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-10-14 00:12:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 00:12:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2020-10-14 00:12:08,932 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 138 [2020-10-14 00:12:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:08,932 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2020-10-14 00:12:08,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 00:12:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2020-10-14 00:12:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 00:12:08,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:08,934 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:08,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:12:08,935 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:08,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1467354743, now seen corresponding path program 22 times [2020-10-14 00:12:08,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:08,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870073290] [2020-10-14 00:12:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 00:12:10,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:12:10,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-14 00:12:10,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:12:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 00:12:10,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:10,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:12:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:12:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:12:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:12:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:12:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:12:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:12:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:12:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:12:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:12:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 00:12:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:10,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:10,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:10,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:10,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:10,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:10,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:10,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 264 proven. 231 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 00:12:10,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870073290] [2020-10-14 00:12:10,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:10,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:12:10,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725775152] [2020-10-14 00:12:10,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:12:10,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:10,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:12:10,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:12:10,954 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 18 states. [2020-10-14 00:12:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:12,167 INFO L93 Difference]: Finished difference Result 264 states and 267 transitions. [2020-10-14 00:12:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 00:12:12,168 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 146 [2020-10-14 00:12:12,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:12,170 INFO L225 Difference]: With dead ends: 264 [2020-10-14 00:12:12,170 INFO L226 Difference]: Without dead ends: 161 [2020-10-14 00:12:12,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:12:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-14 00:12:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2020-10-14 00:12:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 00:12:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2020-10-14 00:12:12,210 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 146 [2020-10-14 00:12:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:12,211 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2020-10-14 00:12:12,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:12:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2020-10-14 00:12:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 00:12:12,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:12,217 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:12,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:12:12,218 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:12,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:12,218 INFO L82 PathProgramCache]: Analyzing trace with hash -6519548, now seen corresponding path program 23 times [2020-10-14 00:12:12,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:12,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324256155] [2020-10-14 00:12:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:13,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:13,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:14,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:17,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:17,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 00:12:17,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:12:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:12:17,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:17,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 00:12:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 00:12:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:18,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:18,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:12:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:18,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:12:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:18,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:12:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:18,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:12:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:18,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:12:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:18,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:12:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:18,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:12:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:18,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:12:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:12:18,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:12:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:18,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 00:12:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:18,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:12:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:18,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:18,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:18,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:18,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:18,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 242 proven. 298 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 00:12:18,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324256155] [2020-10-14 00:12:18,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:18,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:12:18,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105118999] [2020-10-14 00:12:18,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:12:18,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:18,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:12:18,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:12:18,942 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 23 states. [2020-10-14 00:12:21,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:21,046 INFO L93 Difference]: Finished difference Result 217 states and 230 transitions. [2020-10-14 00:12:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 00:12:21,047 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 150 [2020-10-14 00:12:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:21,048 INFO L225 Difference]: With dead ends: 217 [2020-10-14 00:12:21,048 INFO L226 Difference]: Without dead ends: 159 [2020-10-14 00:12:21,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 27 SyntacticMatches, 29 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=393, Invalid=1329, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 00:12:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-14 00:12:21,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-10-14 00:12:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 00:12:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2020-10-14 00:12:21,065 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 150 [2020-10-14 00:12:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:21,065 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2020-10-14 00:12:21,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:12:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2020-10-14 00:12:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 00:12:21,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:21,066 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:21,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:12:21,066 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:21,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1678580993, now seen corresponding path program 24 times [2020-10-14 00:12:21,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:21,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854959593] [2020-10-14 00:12:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:21,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:21,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:22,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:23,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:26,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:26,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 00:12:26,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:12:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:12:26,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:26,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 00:12:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 00:12:26,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:27,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:27,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:12:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:27,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:12:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:12:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:12:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:12:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:12:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:12:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:12:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:12:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 00:12:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 00:12:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 22 proven. 564 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-10-14 00:12:27,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854959593] [2020-10-14 00:12:27,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:27,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:12:27,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252627564] [2020-10-14 00:12:27,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:12:27,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:27,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:12:27,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:12:27,549 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 23 states. [2020-10-14 00:12:30,079 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-14 00:12:30,517 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 00:12:30,782 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-14 00:12:30,997 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 00:12:31,275 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-14 00:12:31,475 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-14 00:12:31,665 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 00:12:31,892 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-14 00:12:32,105 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-14 00:12:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:34,146 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2020-10-14 00:12:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-14 00:12:34,147 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 154 [2020-10-14 00:12:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:34,149 INFO L225 Difference]: With dead ends: 169 [2020-10-14 00:12:34,149 INFO L226 Difference]: Without dead ends: 167 [2020-10-14 00:12:34,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 27 SyntacticMatches, 28 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=973, Invalid=4577, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 00:12:34,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-14 00:12:34,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2020-10-14 00:12:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 00:12:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2020-10-14 00:12:34,167 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 154 [2020-10-14 00:12:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:34,167 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2020-10-14 00:12:34,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:12:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2020-10-14 00:12:34,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 00:12:34,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:34,169 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:34,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:12:34,169 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:34,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:34,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1314785098, now seen corresponding path program 25 times [2020-10-14 00:12:34,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:34,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955016637] [2020-10-14 00:12:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:35,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:39,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:39,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 00:12:39,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:12:39,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:12:39,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:39,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-14 00:12:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 00:12:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:41,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:41,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:12:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:12:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:12:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:12:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:12:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:12:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:12:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:12:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:12:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 00:12:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 00:12:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 00:12:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:41,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:41,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:41,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:41,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:41,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:41,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:41,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:41,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 288 proven. 349 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 00:12:41,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955016637] [2020-10-14 00:12:41,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:41,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 00:12:41,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191420196] [2020-10-14 00:12:41,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 00:12:41,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:41,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 00:12:41,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:12:41,621 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 30 states. [2020-10-14 00:12:44,422 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-14 00:12:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:44,738 INFO L93 Difference]: Finished difference Result 233 states and 247 transitions. [2020-10-14 00:12:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 00:12:44,739 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 162 [2020-10-14 00:12:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:44,740 INFO L225 Difference]: With dead ends: 233 [2020-10-14 00:12:44,741 INFO L226 Difference]: Without dead ends: 171 [2020-10-14 00:12:44,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 29 SyntacticMatches, 26 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=775, Invalid=1981, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 00:12:44,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-14 00:12:44,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-10-14 00:12:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 00:12:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2020-10-14 00:12:44,757 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 162 [2020-10-14 00:12:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:44,758 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2020-10-14 00:12:44,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 00:12:44,758 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2020-10-14 00:12:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 00:12:44,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:44,759 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:44,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:12:44,759 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:44,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:44,759 INFO L82 PathProgramCache]: Analyzing trace with hash -255052239, now seen corresponding path program 26 times [2020-10-14 00:12:44,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:44,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044743683] [2020-10-14 00:12:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:44,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:46,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:49,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:49,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 00:12:49,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:12:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 00:12:49,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:49,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:49,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-14 00:12:49,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:49,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 00:12:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:51,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:51,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:12:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:51,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:12:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:12:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:12:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:12:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:12:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:12:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:12:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 00:12:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:12:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 00:12:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-14 00:12:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:51,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:51,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:51,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:51,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:51,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 24 proven. 663 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 00:12:51,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044743683] [2020-10-14 00:12:51,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:51,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:12:51,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139916187] [2020-10-14 00:12:51,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:12:51,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:51,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:12:51,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:12:51,541 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 24 states. [2020-10-14 00:12:53,735 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-14 00:12:54,361 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-14 00:12:54,642 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 00:12:54,840 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 00:12:55,126 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-14 00:12:55,343 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 00:12:55,646 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 00:12:55,875 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 00:12:56,183 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-14 00:12:56,431 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-14 00:12:56,657 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 00:12:56,921 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-14 00:12:57,160 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-14 00:12:57,325 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-14 00:12:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:59,565 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2020-10-14 00:12:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-14 00:12:59,566 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 166 [2020-10-14 00:12:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:59,568 INFO L225 Difference]: With dead ends: 181 [2020-10-14 00:12:59,568 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 00:12:59,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 29 SyntacticMatches, 31 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1113, Invalid=5367, Unknown=0, NotChecked=0, Total=6480 [2020-10-14 00:12:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 00:12:59,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-10-14 00:12:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 00:12:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2020-10-14 00:12:59,589 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 166 [2020-10-14 00:12:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:59,590 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2020-10-14 00:12:59,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:12:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2020-10-14 00:12:59,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 00:12:59,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:59,591 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:59,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:12:59,592 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:59,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1121319400, now seen corresponding path program 27 times [2020-10-14 00:12:59,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:59,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155611723] [2020-10-14 00:12:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:04,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:04,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 00:13:04,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:13:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:13:04,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:04,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-14 00:13:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:13:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 00:13:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:13:06,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:06,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:06,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:06,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:13:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:06,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:13:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:06,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:13:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:06,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:13:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:06,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:13:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:06,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:13:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:06,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:13:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:13:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:06,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 00:13:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:06,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:13:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:06,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 00:13:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:06,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-14 00:13:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:06,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 00:13:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:06,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:06,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:06,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 338 proven. 404 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-14 00:13:06,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155611723] [2020-10-14 00:13:06,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:06,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:13:06,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916192565] [2020-10-14 00:13:06,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:13:06,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:06,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:13:06,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:13:06,902 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 25 states. [2020-10-14 00:13:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:09,826 INFO L93 Difference]: Finished difference Result 249 states and 264 transitions. [2020-10-14 00:13:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 00:13:09,827 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 174 [2020-10-14 00:13:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:09,828 INFO L225 Difference]: With dead ends: 249 [2020-10-14 00:13:09,828 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 00:13:09,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 30 SyntacticMatches, 35 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 00:13:09,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 00:13:09,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2020-10-14 00:13:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 00:13:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2020-10-14 00:13:09,849 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 174 [2020-10-14 00:13:09,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:09,849 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2020-10-14 00:13:09,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:13:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2020-10-14 00:13:09,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 00:13:09,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:09,851 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:09,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 00:13:09,851 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:09,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:09,852 INFO L82 PathProgramCache]: Analyzing trace with hash -461318429, now seen corresponding path program 28 times [2020-10-14 00:13:09,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:09,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336581991] [2020-10-14 00:13:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:11,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:12,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:14,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 00:13:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:13:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 00:13:14,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:14,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-14 00:13:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:13:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 00:13:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:13:16,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:16,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:16,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:13:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:16,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:13:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:16,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:13:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:16,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:16,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:13:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:16,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:13:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:16,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:13:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:16,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:13:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:16,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:13:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:16,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 00:13:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:16,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 00:13:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 00:13:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:16,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 00:13:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:16,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-14 00:13:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:16,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:16,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:16,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:16,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:16,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:16,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:16,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 26 proven. 770 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-14 00:13:17,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336581991] [2020-10-14 00:13:17,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:17,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:13:17,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758099912] [2020-10-14 00:13:17,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:13:17,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:17,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:13:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:13:17,034 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 25 states. [2020-10-14 00:13:20,351 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-14 00:13:20,514 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-14 00:13:20,714 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 00:13:20,927 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 00:13:21,104 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-14 00:13:21,312 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-14 00:13:21,536 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 00:13:21,719 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-14 00:13:21,955 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 00:13:22,190 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 00:13:22,382 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-14 00:13:22,618 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 00:13:22,883 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-14 00:13:23,099 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-14 00:13:23,346 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-10-14 00:13:23,626 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-14 00:13:23,880 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-14 00:13:24,152 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-14 00:13:24,438 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-14 00:13:24,668 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-14 00:13:27,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:27,568 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2020-10-14 00:13:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-14 00:13:27,569 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 178 [2020-10-14 00:13:27,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:27,571 INFO L225 Difference]: With dead ends: 193 [2020-10-14 00:13:27,571 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 00:13:27,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 31 SyntacticMatches, 35 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1293, Invalid=5847, Unknown=0, NotChecked=0, Total=7140 [2020-10-14 00:13:27,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 00:13:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2020-10-14 00:13:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 00:13:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2020-10-14 00:13:27,594 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 178 [2020-10-14 00:13:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:27,595 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2020-10-14 00:13:27,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:13:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2020-10-14 00:13:27,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 00:13:27,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:27,596 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:27,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 00:13:27,597 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:27,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:27,597 INFO L82 PathProgramCache]: Analyzing trace with hash 528468122, now seen corresponding path program 29 times [2020-10-14 00:13:27,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:27,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058471312] [2020-10-14 00:13:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:32,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:32,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 00:13:32,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:13:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:13:32,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:32,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-14 00:13:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:13:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 00:13:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:34,748 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-10-14 00:13:34,969 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2020-10-14 00:13:35,230 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-14 00:13:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:13:36,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:36,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:36,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:13:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:36,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:36,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:36,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:13:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:36,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:36,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:13:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:36,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:36,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:36,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:13:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:36,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:36,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:36,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:36,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:13:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:36,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:36,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:36,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:13:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:36,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:36,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:36,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:36,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:13:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:36,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:36,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:13:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:36,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:36,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:36,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 00:13:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:36,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:36,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 00:13:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:37,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:37,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:37,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:37,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:37,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:37,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 00:13:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:37,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:37,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:37,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:37,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:37,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:37,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:37,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 00:13:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:37,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:37,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:37,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:37,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:37,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:37,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:37,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-14 00:13:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:37,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:37,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:37,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:37,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:37,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:37,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-14 00:13:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:37,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:37,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:37,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:37,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:37,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:37,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 392 proven. 463 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-14 00:13:37,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058471312] [2020-10-14 00:13:37,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:37,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 00:13:37,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907365539] [2020-10-14 00:13:37,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 00:13:37,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:37,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 00:13:37,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=1023, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 00:13:37,184 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 40 states. [2020-10-14 00:13:38,234 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-10-14 00:13:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:40,370 INFO L93 Difference]: Finished difference Result 265 states and 281 transitions. [2020-10-14 00:13:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 00:13:40,371 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 186 [2020-10-14 00:13:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:40,373 INFO L225 Difference]: With dead ends: 265 [2020-10-14 00:13:40,373 INFO L226 Difference]: Without dead ends: 195 [2020-10-14 00:13:40,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 31 SyntacticMatches, 25 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1140, Invalid=2766, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 00:13:40,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-14 00:13:40,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2020-10-14 00:13:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-14 00:13:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2020-10-14 00:13:40,396 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 186 [2020-10-14 00:13:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:40,397 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2020-10-14 00:13:40,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 00:13:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2020-10-14 00:13:40,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 00:13:40,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:40,398 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:40,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 00:13:40,398 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:40,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:40,399 INFO L82 PathProgramCache]: Analyzing trace with hash 104334613, now seen corresponding path program 30 times [2020-10-14 00:13:40,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:40,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375499031] [2020-10-14 00:13:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking...