/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:27:18,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:27:18,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:27:18,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:27:18,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:27:18,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:27:18,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:27:18,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:27:18,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:27:18,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:27:18,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:27:18,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:27:18,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:27:18,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:27:18,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:27:18,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:27:18,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:27:18,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:27:18,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:27:18,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:27:18,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:27:18,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:27:18,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:27:18,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:27:18,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:27:18,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:27:18,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:27:18,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:27:18,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:27:18,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:27:18,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:27:18,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:27:18,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:27:18,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:27:18,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:27:18,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:27:18,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:27:18,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:27:18,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:27:18,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:27:18,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:27:18,875 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 [2020-10-15 03:27:18,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:27:18,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:27:18,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:27:18,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:27:18,901 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:27:18,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:27:18,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:27:18,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:27:18,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:27:18,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:27:18,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:27:18,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:27:18,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:27:18,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:27:18,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:27:18,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:27:18,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:27:18,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:27:18,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:27:18,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:27:18,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:27:18,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:27:18,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:27:18,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:27:18,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:27:18,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:27:18,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:27:18,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:27:18,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:27:18,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:27:19,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:27:19,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:27:19,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:27:19,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:27:19,321 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:27:19,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-15 03:27:19,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe13442e7/b740edb02dc24efd9246ece63be6ff0d/FLAGd04dafd91 [2020-10-15 03:27:19,951 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:27:19,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-15 03:27:19,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe13442e7/b740edb02dc24efd9246ece63be6ff0d/FLAGd04dafd91 [2020-10-15 03:27:20,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe13442e7/b740edb02dc24efd9246ece63be6ff0d [2020-10-15 03:27:20,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:27:20,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:27:20,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:27:20,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:27:20,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:27:20,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:27:20" (1/1) ... [2020-10-15 03:27:20,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27005f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:20, skipping insertion in model container [2020-10-15 03:27:20,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:27:20" (1/1) ... [2020-10-15 03:27:20,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:27:20,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:27:20,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:27:20,890 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:27:21,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:27:21,038 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:27:21,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21 WrapperNode [2020-10-15 03:27:21,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:27:21,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:27:21,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:27:21,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:27:21,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21" (1/1) ... [2020-10-15 03:27:21,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21" (1/1) ... [2020-10-15 03:27:21,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21" (1/1) ... [2020-10-15 03:27:21,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21" (1/1) ... [2020-10-15 03:27:21,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21" (1/1) ... [2020-10-15 03:27:21,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21" (1/1) ... [2020-10-15 03:27:21,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21" (1/1) ... [2020-10-15 03:27:21,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:27:21,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:27:21,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:27:21,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:27:21,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21" (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 [2020-10-15 03:27:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:27:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:27:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:27:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:27:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:27:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:27:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:27:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:27:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:27:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:27:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:27:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:27:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:27:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:27:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:27:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:27:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:27:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:27:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:27:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:27:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:27:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:27:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:27:22,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:27:22,055 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:27:22,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:27:22 BoogieIcfgContainer [2020-10-15 03:27:22,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:27:22,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:27:22,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:27:22,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:27:22,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:27:20" (1/3) ... [2020-10-15 03:27:22,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7ebbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:27:22, skipping insertion in model container [2020-10-15 03:27:22,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:27:21" (2/3) ... [2020-10-15 03:27:22,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7ebbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:27:22, skipping insertion in model container [2020-10-15 03:27:22,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:27:22" (3/3) ... [2020-10-15 03:27:22,069 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-15 03:27:22,080 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:27:22,088 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:27:22,101 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:27:22,127 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:27:22,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:27:22,128 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:27:22,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:27:22,128 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:27:22,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:27:22,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:27:22,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:27:22,151 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-15 03:27:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 03:27:22,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:22,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:27:22,163 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:22,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:22,168 INFO L82 PathProgramCache]: Analyzing trace with hash -541697796, now seen corresponding path program 1 times [2020-10-15 03:27:22,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:22,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425863014] [2020-10-15 03:27:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:23,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:23,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:24,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:24,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:27,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:27,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 03:27:27,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:27:27,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-15 03:27:27,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:27,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:27,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:27:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:27:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:27:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:27:27,992 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:27:27,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:28,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:28,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:28,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:28,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 03:27:28,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:28,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:27:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:27:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:27:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:27:28,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425863014] [2020-10-15 03:27:28,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:28,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:27:28,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217742762] [2020-10-15 03:27:28,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:27:28,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:28,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:27:28,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:27:28,139 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 6 states. [2020-10-15 03:27:28,445 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:27:29,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:29,508 INFO L93 Difference]: Finished difference Result 392 states and 650 transitions. [2020-10-15 03:27:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:27:29,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-15 03:27:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:29,525 INFO L225 Difference]: With dead ends: 392 [2020-10-15 03:27:29,525 INFO L226 Difference]: Without dead ends: 260 [2020-10-15 03:27:29,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:27:29,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-15 03:27:29,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2020-10-15 03:27:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-15 03:27:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 368 transitions. [2020-10-15 03:27:29,598 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 368 transitions. Word has length 95 [2020-10-15 03:27:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:29,599 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 368 transitions. [2020-10-15 03:27:29,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:27:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 368 transitions. [2020-10-15 03:27:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 03:27:29,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:29,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:27:29,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:27:29,604 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:29,605 INFO L82 PathProgramCache]: Analyzing trace with hash 310581276, now seen corresponding path program 1 times [2020-10-15 03:27:29,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:29,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598326157] [2020-10-15 03:27:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:29,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:29,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:29,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:29,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:30,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:30,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:30,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:34,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:34,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 03:27:34,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:27:34,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:27:34,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:34,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:27:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:27:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:27:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:27:34,888 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:27:34,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:34,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:34,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:34,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:34,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:27:34,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:34,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:27:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:27:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:27:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:27:34,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598326157] [2020-10-15 03:27:34,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:34,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:27:34,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778562624] [2020-10-15 03:27:34,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:27:34,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:34,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:27:34,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:27:34,947 INFO L87 Difference]: Start difference. First operand 258 states and 368 transitions. Second operand 6 states. [2020-10-15 03:27:35,169 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:27:35,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:35,983 INFO L93 Difference]: Finished difference Result 630 states and 945 transitions. [2020-10-15 03:27:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:27:35,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-15 03:27:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:35,988 INFO L225 Difference]: With dead ends: 630 [2020-10-15 03:27:35,988 INFO L226 Difference]: Without dead ends: 427 [2020-10-15 03:27:35,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:27:35,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-15 03:27:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 425. [2020-10-15 03:27:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-15 03:27:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 630 transitions. [2020-10-15 03:27:36,030 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 630 transitions. Word has length 96 [2020-10-15 03:27:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:36,031 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 630 transitions. [2020-10-15 03:27:36,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:27:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 630 transitions. [2020-10-15 03:27:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 03:27:36,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:36,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:27:36,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:27:36,037 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:36,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:36,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1528616668, now seen corresponding path program 1 times [2020-10-15 03:27:36,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:36,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933526973] [2020-10-15 03:27:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:36,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:36,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:40,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:41,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:41,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 03:27:41,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:27:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:27:41,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:41,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:41,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:27:41,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:27:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:27:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:27:41,347 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:27:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:41,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:41,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:41,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:27:41,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:41,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:27:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:27:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:27:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:27:41,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933526973] [2020-10-15 03:27:41,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:41,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:27:41,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890473618] [2020-10-15 03:27:41,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:27:41,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:41,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:27:41,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:27:41,418 INFO L87 Difference]: Start difference. First operand 425 states and 630 transitions. Second operand 6 states. [2020-10-15 03:27:41,634 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 03:27:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:42,324 INFO L93 Difference]: Finished difference Result 779 states and 1185 transitions. [2020-10-15 03:27:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:27:42,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-15 03:27:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:42,327 INFO L225 Difference]: With dead ends: 779 [2020-10-15 03:27:42,328 INFO L226 Difference]: Without dead ends: 425 [2020-10-15 03:27:42,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:27:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-15 03:27:42,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2020-10-15 03:27:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-15 03:27:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 625 transitions. [2020-10-15 03:27:42,356 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 625 transitions. Word has length 97 [2020-10-15 03:27:42,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:42,356 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 625 transitions. [2020-10-15 03:27:42,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:27:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 625 transitions. [2020-10-15 03:27:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 03:27:42,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:42,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:27:42,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:27:42,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:42,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:42,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1602276324, now seen corresponding path program 1 times [2020-10-15 03:27:42,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:42,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080909724] [2020-10-15 03:27:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:43,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:43,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:47,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:47,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 03:27:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:27:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:27:47,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:47,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:27:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:27:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:27:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:27:47,803 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:27:47,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:47,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:47,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:47,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:27:47,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:47,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:27:47,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:47,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:27:47,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:27:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:27:47,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080909724] [2020-10-15 03:27:47,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:47,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:27:47,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763049633] [2020-10-15 03:27:47,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:27:47,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:47,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:27:47,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:27:47,887 INFO L87 Difference]: Start difference. First operand 425 states and 625 transitions. Second operand 8 states. [2020-10-15 03:27:48,102 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 03:27:49,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:49,376 INFO L93 Difference]: Finished difference Result 1046 states and 1595 transitions. [2020-10-15 03:27:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:27:49,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-10-15 03:27:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:49,385 INFO L225 Difference]: With dead ends: 1046 [2020-10-15 03:27:49,385 INFO L226 Difference]: Without dead ends: 703 [2020-10-15 03:27:49,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:27:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-15 03:27:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 425. [2020-10-15 03:27:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-15 03:27:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 624 transitions. [2020-10-15 03:27:49,437 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 624 transitions. Word has length 98 [2020-10-15 03:27:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:49,437 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 624 transitions. [2020-10-15 03:27:49,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:27:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 624 transitions. [2020-10-15 03:27:49,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:27:49,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:49,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:27:49,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:27:49,442 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:49,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:49,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1792543980, now seen corresponding path program 1 times [2020-10-15 03:27:49,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:49,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409771509] [2020-10-15 03:27:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:54,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:54,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:27:54,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:27:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:27:54,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:54,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:27:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:27:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 03:27:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:54,912 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:27:54,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:54,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:54,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:54,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:54,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:27:54,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:54,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:27:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:27:54,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:27:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:27:54,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409771509] [2020-10-15 03:27:54,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:54,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:27:54,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331830789] [2020-10-15 03:27:54,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:27:54,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:54,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:27:54,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:27:54,987 INFO L87 Difference]: Start difference. First operand 425 states and 624 transitions. Second operand 9 states. [2020-10-15 03:27:55,288 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:27:56,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:56,659 INFO L93 Difference]: Finished difference Result 896 states and 1357 transitions. [2020-10-15 03:27:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:27:56,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-15 03:27:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:56,663 INFO L225 Difference]: With dead ends: 896 [2020-10-15 03:27:56,663 INFO L226 Difference]: Without dead ends: 568 [2020-10-15 03:27:56,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:27:56,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-15 03:27:56,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 425. [2020-10-15 03:27:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-15 03:27:56,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 622 transitions. [2020-10-15 03:27:56,710 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 622 transitions. Word has length 99 [2020-10-15 03:27:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:56,711 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 622 transitions. [2020-10-15 03:27:56,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:27:56,711 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 622 transitions. [2020-10-15 03:27:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:27:56,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:56,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:27:56,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:27:56,715 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:56,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1396642908, now seen corresponding path program 1 times [2020-10-15 03:27:56,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:56,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116079447] [2020-10-15 03:27:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:56,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:57,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:57,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:00,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:00,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:00,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:00,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:01,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:01,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:28:01,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:28:01,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:28:01,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:01,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:28:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:28:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 03:28:01,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:28:01,982 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:28:01,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:01,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:01,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:01,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:01,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:28:01,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:02,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:02,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:28:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:02,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116079447] [2020-10-15 03:28:02,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:02,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:28:02,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703349010] [2020-10-15 03:28:02,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:28:02,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:02,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:28:02,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:28:02,038 INFO L87 Difference]: Start difference. First operand 425 states and 622 transitions. Second operand 9 states. [2020-10-15 03:28:02,353 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:28:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:04,749 INFO L93 Difference]: Finished difference Result 3918 states and 6083 transitions. [2020-10-15 03:28:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:28:04,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-15 03:28:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:04,771 INFO L225 Difference]: With dead ends: 3918 [2020-10-15 03:28:04,771 INFO L226 Difference]: Without dead ends: 3644 [2020-10-15 03:28:04,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:28:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-10-15 03:28:04,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 766. [2020-10-15 03:28:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-15 03:28:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1148 transitions. [2020-10-15 03:28:04,952 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1148 transitions. Word has length 100 [2020-10-15 03:28:04,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:04,953 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1148 transitions. [2020-10-15 03:28:04,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:28:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1148 transitions. [2020-10-15 03:28:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:28:04,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:04,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:28:04,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:28:04,959 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:04,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:04,959 INFO L82 PathProgramCache]: Analyzing trace with hash -151399596, now seen corresponding path program 1 times [2020-10-15 03:28:04,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:04,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789662332] [2020-10-15 03:28:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:05,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:05,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:05,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:07,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:07,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:10,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:10,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:28:10,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:28:10,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:28:10,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:10,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:28:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:28:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:28:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:28:10,239 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:28:10,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:10,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:10,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:10,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:28:10,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:10,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:10,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789662332] [2020-10-15 03:28:10,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:10,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:28:10,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025106418] [2020-10-15 03:28:10,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:28:10,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:10,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:28:10,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:28:10,273 INFO L87 Difference]: Start difference. First operand 766 states and 1148 transitions. Second operand 6 states. [2020-10-15 03:28:10,462 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 03:28:12,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:12,350 INFO L93 Difference]: Finished difference Result 4859 states and 7488 transitions. [2020-10-15 03:28:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:28:12,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-15 03:28:12,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:12,372 INFO L225 Difference]: With dead ends: 4859 [2020-10-15 03:28:12,373 INFO L226 Difference]: Without dead ends: 4244 [2020-10-15 03:28:12,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:28:12,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2020-10-15 03:28:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 2608. [2020-10-15 03:28:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2608 states. [2020-10-15 03:28:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 3990 transitions. [2020-10-15 03:28:12,732 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 3990 transitions. Word has length 101 [2020-10-15 03:28:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:12,733 INFO L479 AbstractCegarLoop]: Abstraction has 2608 states and 3990 transitions. [2020-10-15 03:28:12,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:28:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 3990 transitions. [2020-10-15 03:28:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:28:12,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:12,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:28:12,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:28:12,736 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:12,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:12,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1842921258, now seen corresponding path program 1 times [2020-10-15 03:28:12,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:12,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040111673] [2020-10-15 03:28:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:12,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:12,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:13,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:13,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:13,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:13,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:13,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:17,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:17,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:28:17,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:28:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:28:17,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:17,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:28:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:28:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:28:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:18,125 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:28:18,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:18,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:18,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:18,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:28:18,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:18,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:18,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040111673] [2020-10-15 03:28:18,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:18,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:28:18,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839466793] [2020-10-15 03:28:18,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:28:18,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:18,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:28:18,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:28:18,186 INFO L87 Difference]: Start difference. First operand 2608 states and 3990 transitions. Second operand 10 states. [2020-10-15 03:28:18,401 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:28:19,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:19,975 INFO L93 Difference]: Finished difference Result 6014 states and 9272 transitions. [2020-10-15 03:28:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:28:19,976 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-10-15 03:28:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:19,994 INFO L225 Difference]: With dead ends: 6014 [2020-10-15 03:28:19,994 INFO L226 Difference]: Without dead ends: 3682 [2020-10-15 03:28:20,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:28:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2020-10-15 03:28:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 2588. [2020-10-15 03:28:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2020-10-15 03:28:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3950 transitions. [2020-10-15 03:28:20,421 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3950 transitions. Word has length 101 [2020-10-15 03:28:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:20,421 INFO L479 AbstractCegarLoop]: Abstraction has 2588 states and 3950 transitions. [2020-10-15 03:28:20,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:28:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3950 transitions. [2020-10-15 03:28:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:28:20,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:20,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:28:20,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:28:20,444 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1239904795, now seen corresponding path program 1 times [2020-10-15 03:28:20,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:20,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994212233] [2020-10-15 03:28:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:20,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:21,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:22,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:22,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:25,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:25,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:28:25,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:28:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:28:25,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:25,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:28:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:28:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 03:28:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:25,760 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:28:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:25,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:25,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:25,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:28:25,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:25,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:28:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:28:25,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:25,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994212233] [2020-10-15 03:28:25,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:25,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:28:25,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700455675] [2020-10-15 03:28:25,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:28:25,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:25,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:28:25,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:28:25,804 INFO L87 Difference]: Start difference. First operand 2588 states and 3950 transitions. Second operand 10 states. [2020-10-15 03:28:26,014 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-15 03:28:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:29,807 INFO L93 Difference]: Finished difference Result 21351 states and 32623 transitions. [2020-10-15 03:28:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 03:28:29,807 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-10-15 03:28:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:29,893 INFO L225 Difference]: With dead ends: 21351 [2020-10-15 03:28:29,893 INFO L226 Difference]: Without dead ends: 19115 [2020-10-15 03:28:29,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-10-15 03:28:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19115 states. [2020-10-15 03:28:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19115 to 2729. [2020-10-15 03:28:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2729 states. [2020-10-15 03:28:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 4097 transitions. [2020-10-15 03:28:30,502 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 4097 transitions. Word has length 102 [2020-10-15 03:28:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:30,503 INFO L479 AbstractCegarLoop]: Abstraction has 2729 states and 4097 transitions. [2020-10-15 03:28:30,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:28:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 4097 transitions. [2020-10-15 03:28:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:28:30,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:30,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:28:30,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:28:30,506 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash -854927490, now seen corresponding path program 1 times [2020-10-15 03:28:30,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:30,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422680827] [2020-10-15 03:28:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:30,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:30,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:35,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:35,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:28:35,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:28:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:28:35,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:35,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:28:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:28:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:28:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:35,872 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:28:35,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:35,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:35,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:35,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:35,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:35,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:28:35,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:35,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:35,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422680827] [2020-10-15 03:28:35,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:35,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:28:35,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540502235] [2020-10-15 03:28:35,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:28:35,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:35,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:28:35,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:28:35,917 INFO L87 Difference]: Start difference. First operand 2729 states and 4097 transitions. Second operand 9 states. [2020-10-15 03:28:36,158 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:28:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:38,053 INFO L93 Difference]: Finished difference Result 6135 states and 9307 transitions. [2020-10-15 03:28:38,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:28:38,054 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-15 03:28:38,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:38,062 INFO L225 Difference]: With dead ends: 6135 [2020-10-15 03:28:38,063 INFO L226 Difference]: Without dead ends: 3855 [2020-10-15 03:28:38,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:28:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2020-10-15 03:28:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 2729. [2020-10-15 03:28:38,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2729 states. [2020-10-15 03:28:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 4079 transitions. [2020-10-15 03:28:38,544 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 4079 transitions. Word has length 102 [2020-10-15 03:28:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:38,545 INFO L479 AbstractCegarLoop]: Abstraction has 2729 states and 4079 transitions. [2020-10-15 03:28:38,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:28:38,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 4079 transitions. [2020-10-15 03:28:38,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:28:38,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:38,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:28:38,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:28:38,548 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:38,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:38,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1371351176, now seen corresponding path program 1 times [2020-10-15 03:28:38,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:38,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953119899] [2020-10-15 03:28:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:38,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:39,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:43,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:43,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:28:43,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:28:43,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:28:43,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:43,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:43,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:28:43,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 03:28:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:28:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:43,772 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:28:43,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:43,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:43,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:43,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:43,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:28:43,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:43,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:43,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953119899] [2020-10-15 03:28:43,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:43,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:28:43,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874022766] [2020-10-15 03:28:43,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:28:43,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:43,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:28:43,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:28:43,801 INFO L87 Difference]: Start difference. First operand 2729 states and 4079 transitions. Second operand 6 states. [2020-10-15 03:28:44,009 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-15 03:28:45,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:45,469 INFO L93 Difference]: Finished difference Result 7045 states and 10714 transitions. [2020-10-15 03:28:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:28:45,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:28:45,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:45,480 INFO L225 Difference]: With dead ends: 7045 [2020-10-15 03:28:45,481 INFO L226 Difference]: Without dead ends: 4875 [2020-10-15 03:28:45,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:28:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2020-10-15 03:28:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4871. [2020-10-15 03:28:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4871 states. [2020-10-15 03:28:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 7343 transitions. [2020-10-15 03:28:46,363 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 7343 transitions. Word has length 102 [2020-10-15 03:28:46,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:46,363 INFO L479 AbstractCegarLoop]: Abstraction has 4871 states and 7343 transitions. [2020-10-15 03:28:46,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:28:46,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 7343 transitions. [2020-10-15 03:28:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:28:46,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:46,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:28:46,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:28:46,366 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:46,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:46,366 INFO L82 PathProgramCache]: Analyzing trace with hash 240226934, now seen corresponding path program 1 times [2020-10-15 03:28:46,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:46,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543566067] [2020-10-15 03:28:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:48,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:48,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:51,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:51,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:28:51,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:28:51,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:28:51,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:51,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:51,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:28:51,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:28:51,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 03:28:51,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:51,666 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:28:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:51,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:51,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:51,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:51,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:28:51,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:51,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:51,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:28:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:51,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543566067] [2020-10-15 03:28:51,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:51,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:28:51,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900085260] [2020-10-15 03:28:51,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:28:51,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:51,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:28:51,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:28:51,718 INFO L87 Difference]: Start difference. First operand 4871 states and 7343 transitions. Second operand 9 states. [2020-10-15 03:28:52,020 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:28:56,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:56,557 INFO L93 Difference]: Finished difference Result 25203 states and 38425 transitions. [2020-10-15 03:28:56,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:28:56,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 03:28:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:56,587 INFO L225 Difference]: With dead ends: 25203 [2020-10-15 03:28:56,588 INFO L226 Difference]: Without dead ends: 20929 [2020-10-15 03:28:56,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:28:56,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20929 states. [2020-10-15 03:28:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20929 to 4871. [2020-10-15 03:28:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4871 states. [2020-10-15 03:28:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 7327 transitions. [2020-10-15 03:28:57,533 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 7327 transitions. Word has length 103 [2020-10-15 03:28:57,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:57,534 INFO L479 AbstractCegarLoop]: Abstraction has 4871 states and 7327 transitions. [2020-10-15 03:28:57,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:28:57,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 7327 transitions. [2020-10-15 03:28:57,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:28:57,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:57,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:28:57,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:28:57,536 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:57,536 INFO L82 PathProgramCache]: Analyzing trace with hash -990793, now seen corresponding path program 1 times [2020-10-15 03:28:57,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:57,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793938061] [2020-10-15 03:28:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:58,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:00,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:02,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:02,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:29:02,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:29:02,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:29:02,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:02,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:29:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:29:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 03:29:02,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:02,782 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:29:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:02,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:02,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:02,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:02,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:02,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:29:02,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:02,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:02,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793938061] [2020-10-15 03:29:02,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:02,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:29:02,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709172583] [2020-10-15 03:29:02,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:29:02,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:02,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:29:02,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:29:02,821 INFO L87 Difference]: Start difference. First operand 4871 states and 7327 transitions. Second operand 5 states. [2020-10-15 03:29:03,021 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:29:05,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:05,442 INFO L93 Difference]: Finished difference Result 13083 states and 19793 transitions. [2020-10-15 03:29:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:29:05,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-15 03:29:05,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:05,454 INFO L225 Difference]: With dead ends: 13083 [2020-10-15 03:29:05,454 INFO L226 Difference]: Without dead ends: 8809 [2020-10-15 03:29:05,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:29:05,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8809 states. [2020-10-15 03:29:07,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8809 to 8807. [2020-10-15 03:29:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8807 states. [2020-10-15 03:29:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8807 states to 8807 states and 13199 transitions. [2020-10-15 03:29:07,224 INFO L78 Accepts]: Start accepts. Automaton has 8807 states and 13199 transitions. Word has length 103 [2020-10-15 03:29:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:07,224 INFO L479 AbstractCegarLoop]: Abstraction has 8807 states and 13199 transitions. [2020-10-15 03:29:07,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:29:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 8807 states and 13199 transitions. [2020-10-15 03:29:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:29:07,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:07,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:29:07,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:29:07,227 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:07,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:07,227 INFO L82 PathProgramCache]: Analyzing trace with hash 861683325, now seen corresponding path program 1 times [2020-10-15 03:29:07,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:07,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202949286] [2020-10-15 03:29:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:07,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:07,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:09,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:09,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:10,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:10,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:12,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:12,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:29:12,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:29:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:29:12,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:12,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:29:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:29:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 03:29:12,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:12,475 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:29:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:12,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:12,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:12,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:12,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:29:12,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:12,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:12,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202949286] [2020-10-15 03:29:12,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:12,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:29:12,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781713672] [2020-10-15 03:29:12,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:29:12,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:12,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:29:12,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:29:12,506 INFO L87 Difference]: Start difference. First operand 8807 states and 13199 transitions. Second operand 9 states. [2020-10-15 03:29:12,730 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 03:29:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:21,293 INFO L93 Difference]: Finished difference Result 43333 states and 65004 transitions. [2020-10-15 03:29:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:29:21,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 03:29:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:21,334 INFO L225 Difference]: With dead ends: 43333 [2020-10-15 03:29:21,334 INFO L226 Difference]: Without dead ends: 37183 [2020-10-15 03:29:21,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:29:21,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37183 states. [2020-10-15 03:29:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37183 to 12743. [2020-10-15 03:29:24,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12743 states. [2020-10-15 03:29:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12743 states to 12743 states and 19135 transitions. [2020-10-15 03:29:24,103 INFO L78 Accepts]: Start accepts. Automaton has 12743 states and 19135 transitions. Word has length 103 [2020-10-15 03:29:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:24,104 INFO L479 AbstractCegarLoop]: Abstraction has 12743 states and 19135 transitions. [2020-10-15 03:29:24,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:29:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 12743 states and 19135 transitions. [2020-10-15 03:29:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:29:24,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:24,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:29:24,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:29:24,106 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:24,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:24,107 INFO L82 PathProgramCache]: Analyzing trace with hash 941951337, now seen corresponding path program 1 times [2020-10-15 03:29:24,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:24,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404580175] [2020-10-15 03:29:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:24,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:24,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:24,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:24,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:27,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:28,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:29,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:29,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:29,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:29:29,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-15 03:29:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:29:29,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:29,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:29,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:29:29,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:29:29,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 03:29:29,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:29,387 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:29:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:29,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:29,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:29,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:29,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:29:29,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:29,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:29,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:29,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:29:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:29,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404580175] [2020-10-15 03:29:29,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:29,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:29:29,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258743896] [2020-10-15 03:29:29,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:29:29,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:29,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:29:29,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:29:29,428 INFO L87 Difference]: Start difference. First operand 12743 states and 19135 transitions. Second operand 9 states. [2020-10-15 03:29:29,625 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-15 03:29:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:44,489 INFO L93 Difference]: Finished difference Result 77865 states and 117240 transitions. [2020-10-15 03:29:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:29:44,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 03:29:44,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:44,563 INFO L225 Difference]: With dead ends: 77865 [2020-10-15 03:29:44,563 INFO L226 Difference]: Without dead ends: 65557 [2020-10-15 03:29:44,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:29:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65557 states. [2020-10-15 03:29:47,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65557 to 12557. [2020-10-15 03:29:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12557 states. [2020-10-15 03:29:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12557 states to 12557 states and 18767 transitions. [2020-10-15 03:29:47,541 INFO L78 Accepts]: Start accepts. Automaton has 12557 states and 18767 transitions. Word has length 103 [2020-10-15 03:29:47,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:47,541 INFO L479 AbstractCegarLoop]: Abstraction has 12557 states and 18767 transitions. [2020-10-15 03:29:47,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:29:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 12557 states and 18767 transitions. [2020-10-15 03:29:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:29:47,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:47,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:29:47,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:29:47,544 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:47,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:47,544 INFO L82 PathProgramCache]: Analyzing trace with hash 189887917, now seen corresponding path program 1 times [2020-10-15 03:29:47,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:47,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145707460] [2020-10-15 03:29:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:47,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:52,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:52,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:29:52,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:29:52,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:29:52,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:52,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:29:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:29:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 03:29:52,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:52,940 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:29:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:52,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:52,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:52,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:29:52,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:52,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:52,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145707460] [2020-10-15 03:29:52,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:52,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:29:52,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946890946] [2020-10-15 03:29:52,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:29:52,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:52,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:29:52,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:29:52,974 INFO L87 Difference]: Start difference. First operand 12557 states and 18767 transitions. Second operand 9 states. [2020-10-15 03:29:53,213 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:29:58,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:58,060 INFO L93 Difference]: Finished difference Result 21161 states and 31693 transitions. [2020-10-15 03:29:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:29:58,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 03:29:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:58,075 INFO L225 Difference]: With dead ends: 21161 [2020-10-15 03:29:58,075 INFO L226 Difference]: Without dead ends: 12561 [2020-10-15 03:29:58,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:29:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12561 states. [2020-10-15 03:30:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12561 to 12557. [2020-10-15 03:30:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12557 states. [2020-10-15 03:30:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12557 states to 12557 states and 18731 transitions. [2020-10-15 03:30:00,819 INFO L78 Accepts]: Start accepts. Automaton has 12557 states and 18731 transitions. Word has length 103 [2020-10-15 03:30:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:00,819 INFO L479 AbstractCegarLoop]: Abstraction has 12557 states and 18731 transitions. [2020-10-15 03:30:00,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:30:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 12557 states and 18731 transitions. [2020-10-15 03:30:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 03:30:00,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:00,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:30:00,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:30:00,821 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:00,821 INFO L82 PathProgramCache]: Analyzing trace with hash 803723302, now seen corresponding path program 1 times [2020-10-15 03:30:00,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:00,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632466304] [2020-10-15 03:30:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:00,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:01,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:05,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:05,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 03:30:05,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:30:05,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:30:05,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:05,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:30:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-15 03:30:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:30:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:06,038 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:30:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:06,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:06,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:06,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:30:06,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:06,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:06,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632466304] [2020-10-15 03:30:06,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:06,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:30:06,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271359393] [2020-10-15 03:30:06,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:30:06,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:06,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:30:06,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:30:06,080 INFO L87 Difference]: Start difference. First operand 12557 states and 18731 transitions. Second operand 6 states. [2020-10-15 03:30:06,304 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-15 03:30:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:10,701 INFO L93 Difference]: Finished difference Result 25174 states and 37572 transitions. [2020-10-15 03:30:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:30:10,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-15 03:30:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:10,720 INFO L225 Difference]: With dead ends: 25174 [2020-10-15 03:30:10,720 INFO L226 Difference]: Without dead ends: 17028 [2020-10-15 03:30:10,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:30:10,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17028 states. [2020-10-15 03:30:14,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17028 to 15712. [2020-10-15 03:30:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15712 states. [2020-10-15 03:30:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15712 states to 15712 states and 23505 transitions. [2020-10-15 03:30:14,304 INFO L78 Accepts]: Start accepts. Automaton has 15712 states and 23505 transitions. Word has length 104 [2020-10-15 03:30:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:14,304 INFO L479 AbstractCegarLoop]: Abstraction has 15712 states and 23505 transitions. [2020-10-15 03:30:14,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:30:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 15712 states and 23505 transitions. [2020-10-15 03:30:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 03:30:14,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:14,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:30:14,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:30:14,307 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1144808866, now seen corresponding path program 1 times [2020-10-15 03:30:14,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:14,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931611846] [2020-10-15 03:30:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:14,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:14,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:14,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:16,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:19,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:19,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 03:30:19,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:30:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:30:19,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:19,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:30:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:30:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:30:19,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:19,540 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:30:19,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:19,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:19,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:19,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:30:19,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:19,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:30:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:30:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:19,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931611846] [2020-10-15 03:30:19,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:19,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:30:19,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35710105] [2020-10-15 03:30:19,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:30:19,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:19,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:30:19,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:30:19,579 INFO L87 Difference]: Start difference. First operand 15712 states and 23505 transitions. Second operand 6 states. [2020-10-15 03:30:19,778 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:30:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:27,645 INFO L93 Difference]: Finished difference Result 46373 states and 69392 transitions. [2020-10-15 03:30:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:30:27,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-15 03:30:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:27,683 INFO L225 Difference]: With dead ends: 46373 [2020-10-15 03:30:27,683 INFO L226 Difference]: Without dead ends: 30760 [2020-10-15 03:30:27,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:30:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30760 states. [2020-10-15 03:30:34,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30760 to 30758. [2020-10-15 03:30:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30758 states. [2020-10-15 03:30:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30758 states to 30758 states and 45752 transitions. [2020-10-15 03:30:34,917 INFO L78 Accepts]: Start accepts. Automaton has 30758 states and 45752 transitions. Word has length 104 [2020-10-15 03:30:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:34,918 INFO L479 AbstractCegarLoop]: Abstraction has 30758 states and 45752 transitions. [2020-10-15 03:30:34,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:30:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 30758 states and 45752 transitions. [2020-10-15 03:30:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 03:30:34,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:34,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:30:34,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:30:34,921 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:34,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:34,921 INFO L82 PathProgramCache]: Analyzing trace with hash 187113007, now seen corresponding path program 1 times [2020-10-15 03:30:34,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:34,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094927052] [2020-10-15 03:30:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:35,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:35,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:39,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 03:30:39,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:30:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:30:39,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:39,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:30:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:30:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 03:30:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:40,250 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:30:40,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:40,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:40,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:40,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:40,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:30:40,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:40,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:40,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094927052] [2020-10-15 03:30:40,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:40,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:30:40,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800202099] [2020-10-15 03:30:40,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:30:40,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:40,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:30:40,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:30:40,284 INFO L87 Difference]: Start difference. First operand 30758 states and 45752 transitions. Second operand 9 states. [2020-10-15 03:30:40,502 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:30:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:53,357 INFO L93 Difference]: Finished difference Result 76588 states and 113768 transitions. [2020-10-15 03:30:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:30:53,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-15 03:30:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:53,416 INFO L225 Difference]: With dead ends: 76588 [2020-10-15 03:30:53,416 INFO L226 Difference]: Without dead ends: 46416 [2020-10-15 03:30:53,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:30:53,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46416 states. [2020-10-15 03:31:02,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46416 to 30758. [2020-10-15 03:31:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30758 states. [2020-10-15 03:31:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30758 states to 30758 states and 45714 transitions. [2020-10-15 03:31:02,534 INFO L78 Accepts]: Start accepts. Automaton has 30758 states and 45714 transitions. Word has length 105 [2020-10-15 03:31:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:02,534 INFO L479 AbstractCegarLoop]: Abstraction has 30758 states and 45714 transitions. [2020-10-15 03:31:02,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:31:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 30758 states and 45714 transitions. [2020-10-15 03:31:02,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 03:31:02,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:02,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:02,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:31:02,537 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:02,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:02,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1732067198, now seen corresponding path program 1 times [2020-10-15 03:31:02,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:02,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272609160] [2020-10-15 03:31:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:03,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:04,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:05,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:07,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:07,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 03:31:07,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:31:07,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:31:07,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:07,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:31:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:31:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 03:31:07,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:07,933 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:31:07,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:31:07,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:07,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:07,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:07,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272609160] [2020-10-15 03:31:07,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:07,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:31:07,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588432302] [2020-10-15 03:31:07,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:31:07,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:07,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:31:07,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:31:07,970 INFO L87 Difference]: Start difference. First operand 30758 states and 45714 transitions. Second operand 10 states. [2020-10-15 03:31:08,169 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 164