/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:33:14,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:33:14,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:33:14,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:33:14,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:33:14,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:33:14,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:33:14,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:33:14,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:33:14,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:33:14,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:33:14,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:33:14,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:33:14,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:33:14,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:33:14,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:33:14,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:33:14,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:33:14,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:33:14,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:33:14,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:33:14,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:33:14,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:33:14,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:33:14,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:33:14,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:33:14,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:33:14,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:33:14,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:33:14,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:33:14,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:33:14,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:33:14,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:33:14,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:33:14,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:33:14,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:33:14,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:33:14,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:33:14,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:33:14,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:33:14,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:33:14,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:33:14,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:33:14,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:33:14,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:33:14,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:33:14,958 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:33:14,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:33:14,958 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:33:14,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:33:14,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:33:14,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:33:14,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:33:14,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:33:14,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:33:14,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:33:14,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:33:14,961 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:33:14,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:33:14,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:33:14,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:33:14,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:33:14,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:33:14,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:33:14,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:33:14,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:33:14,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:33:14,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:33:14,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:33:14,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:33:14,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:33:14,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:33:15,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:33:15,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:33:15,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:33:15,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:33:15,288 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:33:15,289 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:33:15,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc88a8d16/5d180fcee99543c3aee43f6aa1015964/FLAG2056b4831 [2020-10-13 14:33:15,993 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:33:15,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:33:16,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc88a8d16/5d180fcee99543c3aee43f6aa1015964/FLAG2056b4831 [2020-10-13 14:33:16,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc88a8d16/5d180fcee99543c3aee43f6aa1015964 [2020-10-13 14:33:16,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:33:16,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:33:16,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:33:16,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:33:16,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:33:16,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:33:16" (1/1) ... [2020-10-13 14:33:16,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ace65ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:16, skipping insertion in model container [2020-10-13 14:33:16,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:33:16" (1/1) ... [2020-10-13 14:33:16,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:33:16,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:33:17,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:33:17,367 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:33:17,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:33:17,819 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:33:17,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17 WrapperNode [2020-10-13 14:33:17,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:33:17,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:33:17,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:33:17,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:33:17,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17" (1/1) ... [2020-10-13 14:33:17,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17" (1/1) ... [2020-10-13 14:33:17,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17" (1/1) ... [2020-10-13 14:33:17,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17" (1/1) ... [2020-10-13 14:33:17,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17" (1/1) ... [2020-10-13 14:33:18,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17" (1/1) ... [2020-10-13 14:33:18,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17" (1/1) ... [2020-10-13 14:33:18,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:33:18,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:33:18,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:33:18,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:33:18,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:33:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:33:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:33:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:33:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:33:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:33:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:33:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:33:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:33:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:33:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:33:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:33:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:33:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:33:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:33:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:33:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:33:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:33:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:33:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:33:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:33:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:33:21,101 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:33:21,101 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:33:21,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:33:21 BoogieIcfgContainer [2020-10-13 14:33:21,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:33:21,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:33:21,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:33:21,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:33:21,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:33:16" (1/3) ... [2020-10-13 14:33:21,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a66f3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:33:21, skipping insertion in model container [2020-10-13 14:33:21,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:17" (2/3) ... [2020-10-13 14:33:21,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a66f3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:33:21, skipping insertion in model container [2020-10-13 14:33:21,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:33:21" (3/3) ... [2020-10-13 14:33:21,121 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:33:21,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:33:21,139 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-13 14:33:21,152 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-13 14:33:21,180 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:33:21,180 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:33:21,180 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:33:21,180 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:33:21,181 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:33:21,181 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:33:21,181 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:33:21,181 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:33:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states. [2020-10-13 14:33:21,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:33:21,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:21,246 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] [2020-10-13 14:33:21,246 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:21,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:21,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1150486229, now seen corresponding path program 1 times [2020-10-13 14:33:21,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:21,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041164725] [2020-10-13 14:33:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:26,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:33:26,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:33:26,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:33:26,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:33:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:33:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:33:27,516 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:33:27,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:27,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:27,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:27,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 14:33:27,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:33:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:27,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041164725] [2020-10-13 14:33:27,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:27,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:33:27,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050055584] [2020-10-13 14:33:27,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:27,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:27,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:27,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:27,615 INFO L87 Difference]: Start difference. First operand 1259 states. Second operand 6 states. [2020-10-13 14:33:28,172 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-13 14:33:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:35,736 INFO L93 Difference]: Finished difference Result 2389 states and 4183 transitions. [2020-10-13 14:33:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:33:35,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 14:33:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:35,767 INFO L225 Difference]: With dead ends: 2389 [2020-10-13 14:33:35,768 INFO L226 Difference]: Without dead ends: 1468 [2020-10-13 14:33:35,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:33:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2020-10-13 14:33:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1462. [2020-10-13 14:33:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1462 states. [2020-10-13 14:33:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1956 transitions. [2020-10-13 14:33:35,927 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1956 transitions. Word has length 55 [2020-10-13 14:33:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:35,927 INFO L479 AbstractCegarLoop]: Abstraction has 1462 states and 1956 transitions. [2020-10-13 14:33:35,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1956 transitions. [2020-10-13 14:33:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:33:35,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:35,933 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] [2020-10-13 14:33:35,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:33:35,934 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:35,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:35,935 INFO L82 PathProgramCache]: Analyzing trace with hash 185145934, now seen corresponding path program 1 times [2020-10-13 14:33:35,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:35,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031294956] [2020-10-13 14:33:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:36,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:36,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:38,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:38,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:41,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:41,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:33:41,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:33:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:33:41,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:33:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:33:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:41,666 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:33:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:41,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:41,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:41,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 14:33:41,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:33:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:33:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:41,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031294956] [2020-10-13 14:33:41,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:41,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:33:41,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060582943] [2020-10-13 14:33:41,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:41,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:41,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:41,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:41,781 INFO L87 Difference]: Start difference. First operand 1462 states and 1956 transitions. Second operand 6 states. [2020-10-13 14:33:42,487 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-13 14:33:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:48,127 INFO L93 Difference]: Finished difference Result 2962 states and 4008 transitions. [2020-10-13 14:33:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:33:48,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 14:33:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:48,138 INFO L225 Difference]: With dead ends: 2962 [2020-10-13 14:33:48,139 INFO L226 Difference]: Without dead ends: 2036 [2020-10-13 14:33:48,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:33:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2020-10-13 14:33:48,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2023. [2020-10-13 14:33:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2023 states. [2020-10-13 14:33:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2738 transitions. [2020-10-13 14:33:48,228 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2738 transitions. Word has length 56 [2020-10-13 14:33:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:48,228 INFO L479 AbstractCegarLoop]: Abstraction has 2023 states and 2738 transitions. [2020-10-13 14:33:48,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2738 transitions. [2020-10-13 14:33:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:33:48,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:48,232 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] [2020-10-13 14:33:48,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:33:48,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:48,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1294211967, now seen corresponding path program 1 times [2020-10-13 14:33:48,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:48,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093619930] [2020-10-13 14:33:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:49,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:51,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:51,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:53,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:53,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:33:53,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:33:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:33:53,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:33:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:33:53,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:33:53,810 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:33:53,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:53,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:53,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:53,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:53,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 14:33:53,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:53,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:53,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:33:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:53,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093619930] [2020-10-13 14:33:53,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:53,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:33:53,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310789243] [2020-10-13 14:33:53,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:53,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:53,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:53,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:53,885 INFO L87 Difference]: Start difference. First operand 2023 states and 2738 transitions. Second operand 6 states. [2020-10-13 14:33:54,396 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-13 14:33:58,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:58,853 INFO L93 Difference]: Finished difference Result 4135 states and 5663 transitions. [2020-10-13 14:33:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:33:58,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 14:33:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:58,870 INFO L225 Difference]: With dead ends: 4135 [2020-10-13 14:33:58,870 INFO L226 Difference]: Without dead ends: 2799 [2020-10-13 14:33:58,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:33:58,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2020-10-13 14:33:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2789. [2020-10-13 14:33:58,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2020-10-13 14:33:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3782 transitions. [2020-10-13 14:33:58,999 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3782 transitions. Word has length 56 [2020-10-13 14:33:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:59,000 INFO L479 AbstractCegarLoop]: Abstraction has 2789 states and 3782 transitions. [2020-10-13 14:33:59,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3782 transitions. [2020-10-13 14:33:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:33:59,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:59,004 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] [2020-10-13 14:33:59,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:33:59,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:59,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:59,005 INFO L82 PathProgramCache]: Analyzing trace with hash 215676365, now seen corresponding path program 1 times [2020-10-13 14:33:59,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:59,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498128450] [2020-10-13 14:33:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:00,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:00,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:01,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:02,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:02,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:03,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:04,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:34:04,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:34:04,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:34:04,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:04,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:34:04,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:34:04,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 14:34:04,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:04,666 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:34:04,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:04,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:04,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:34:04,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:04,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498128450] [2020-10-13 14:34:04,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:04,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:34:04,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117074578] [2020-10-13 14:34:04,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:34:04,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:04,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:34:04,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:34:04,715 INFO L87 Difference]: Start difference. First operand 2789 states and 3782 transitions. Second operand 10 states. [2020-10-13 14:34:05,371 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2020-10-13 14:34:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:11,328 INFO L93 Difference]: Finished difference Result 6256 states and 8760 transitions. [2020-10-13 14:34:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 14:34:11,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 14:34:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:11,345 INFO L225 Difference]: With dead ends: 6256 [2020-10-13 14:34:11,345 INFO L226 Difference]: Without dead ends: 3889 [2020-10-13 14:34:11,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:34:11,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-10-13 14:34:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 3043. [2020-10-13 14:34:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3043 states. [2020-10-13 14:34:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 4132 transitions. [2020-10-13 14:34:11,506 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 4132 transitions. Word has length 57 [2020-10-13 14:34:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:11,507 INFO L479 AbstractCegarLoop]: Abstraction has 3043 states and 4132 transitions. [2020-10-13 14:34:11,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:34:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 4132 transitions. [2020-10-13 14:34:11,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:34:11,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:11,512 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] [2020-10-13 14:34:11,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:34:11,513 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:11,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:11,514 INFO L82 PathProgramCache]: Analyzing trace with hash -717922590, now seen corresponding path program 1 times [2020-10-13 14:34:11,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:11,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059453266] [2020-10-13 14:34:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:11,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:13,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:13,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:13,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:16,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:34:16,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:34:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:34:16,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:34:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:34:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:34:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:17,315 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:34:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:17,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:17,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:34:17,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:17,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:17,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059453266] [2020-10-13 14:34:17,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:17,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:34:17,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496833958] [2020-10-13 14:34:17,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:34:17,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:17,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:34:17,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:34:17,364 INFO L87 Difference]: Start difference. First operand 3043 states and 4132 transitions. Second operand 11 states. [2020-10-13 14:34:18,023 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-13 14:34:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:25,052 INFO L93 Difference]: Finished difference Result 9387 states and 13562 transitions. [2020-10-13 14:34:25,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:34:25,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 14:34:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:25,080 INFO L225 Difference]: With dead ends: 9387 [2020-10-13 14:34:25,080 INFO L226 Difference]: Without dead ends: 7601 [2020-10-13 14:34:25,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:34:25,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2020-10-13 14:34:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 2689. [2020-10-13 14:34:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2689 states. [2020-10-13 14:34:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 3718 transitions. [2020-10-13 14:34:25,284 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 3718 transitions. Word has length 57 [2020-10-13 14:34:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:25,285 INFO L479 AbstractCegarLoop]: Abstraction has 2689 states and 3718 transitions. [2020-10-13 14:34:25,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:34:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 3718 transitions. [2020-10-13 14:34:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:34:25,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:25,288 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] [2020-10-13 14:34:25,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:34:25,288 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:25,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1175559912, now seen corresponding path program 1 times [2020-10-13 14:34:25,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:25,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886581441] [2020-10-13 14:34:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:25,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:30,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:30,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:30,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:34:30,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:34:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:34:30,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:34:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:34:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:34:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:31,091 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:34:31,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:31,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:31,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:31,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:31,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:31,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:34:31,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:31,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:31,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:31,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:31,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:31,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886581441] [2020-10-13 14:34:31,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:31,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:34:31,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958235750] [2020-10-13 14:34:31,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:34:31,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:34:31,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:34:31,121 INFO L87 Difference]: Start difference. First operand 2689 states and 3718 transitions. Second operand 10 states. [2020-10-13 14:34:32,231 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 331 DAG size of output: 330 [2020-10-13 14:34:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:36,371 INFO L93 Difference]: Finished difference Result 6361 states and 9245 transitions. [2020-10-13 14:34:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:34:36,372 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 14:34:36,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:36,390 INFO L225 Difference]: With dead ends: 6361 [2020-10-13 14:34:36,390 INFO L226 Difference]: Without dead ends: 4534 [2020-10-13 14:34:36,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:34:36,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2020-10-13 14:34:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 2635. [2020-10-13 14:34:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2635 states. [2020-10-13 14:34:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3745 transitions. [2020-10-13 14:34:36,585 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3745 transitions. Word has length 57 [2020-10-13 14:34:36,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:36,585 INFO L479 AbstractCegarLoop]: Abstraction has 2635 states and 3745 transitions. [2020-10-13 14:34:36,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:34:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3745 transitions. [2020-10-13 14:34:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:34:36,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:36,588 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] [2020-10-13 14:34:36,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:34:36,588 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:36,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:36,589 INFO L82 PathProgramCache]: Analyzing trace with hash -2108629905, now seen corresponding path program 1 times [2020-10-13 14:34:36,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:36,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320354569] [2020-10-13 14:34:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:36,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:38,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:34:38,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:34:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2046 [2020-10-13 14:34:38,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:34:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:34:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:39,159 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:34:39,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:39,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:39,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:39,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:34:39,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:39,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:39,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320354569] [2020-10-13 14:34:39,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:39,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:34:39,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165769962] [2020-10-13 14:34:39,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:34:39,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:34:39,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:39,199 INFO L87 Difference]: Start difference. First operand 2635 states and 3745 transitions. Second operand 4 states. [2020-10-13 14:34:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:41,814 INFO L93 Difference]: Finished difference Result 5653 states and 8332 transitions. [2020-10-13 14:34:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:34:41,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-13 14:34:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:41,829 INFO L225 Difference]: With dead ends: 5653 [2020-10-13 14:34:41,829 INFO L226 Difference]: Without dead ends: 3758 [2020-10-13 14:34:41,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:41,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2020-10-13 14:34:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3242. [2020-10-13 14:34:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3242 states. [2020-10-13 14:34:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4646 transitions. [2020-10-13 14:34:42,109 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4646 transitions. Word has length 58 [2020-10-13 14:34:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:42,109 INFO L479 AbstractCegarLoop]: Abstraction has 3242 states and 4646 transitions. [2020-10-13 14:34:42,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:34:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4646 transitions. [2020-10-13 14:34:42,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:34:42,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:42,112 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] [2020-10-13 14:34:42,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:34:42,113 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:42,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:42,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1198215639, now seen corresponding path program 1 times [2020-10-13 14:34:42,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:42,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101800842] [2020-10-13 14:34:42,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:42,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:43,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:43,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:34:43,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:34:43,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1587 [2020-10-13 14:34:43,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:43,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:34:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:34:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:44,233 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:34:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:44,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:44,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:44,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:34:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:44,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:44,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101800842] [2020-10-13 14:34:44,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:44,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:34:44,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035981106] [2020-10-13 14:34:44,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:34:44,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:44,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:34:44,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:44,263 INFO L87 Difference]: Start difference. First operand 3242 states and 4646 transitions. Second operand 4 states. [2020-10-13 14:34:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:46,820 INFO L93 Difference]: Finished difference Result 7600 states and 11245 transitions. [2020-10-13 14:34:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:34:46,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-13 14:34:46,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:46,834 INFO L225 Difference]: With dead ends: 7600 [2020-10-13 14:34:46,835 INFO L226 Difference]: Without dead ends: 5136 [2020-10-13 14:34:46,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5136 states. [2020-10-13 14:34:47,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5136 to 4395. [2020-10-13 14:34:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4395 states. [2020-10-13 14:34:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 6338 transitions. [2020-10-13 14:34:47,125 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 6338 transitions. Word has length 58 [2020-10-13 14:34:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:47,125 INFO L479 AbstractCegarLoop]: Abstraction has 4395 states and 6338 transitions. [2020-10-13 14:34:47,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:34:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 6338 transitions. [2020-10-13 14:34:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:34:47,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:47,127 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] [2020-10-13 14:34:47,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:34:47,127 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash 118295321, now seen corresponding path program 1 times [2020-10-13 14:34:47,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:47,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770639395] [2020-10-13 14:34:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:49,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:49,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:34:49,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:34:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2669 [2020-10-13 14:34:49,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 14:34:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:34:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:50,280 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:34:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:50,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:50,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:50,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:50,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:34:50,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:50,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:50,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770639395] [2020-10-13 14:34:50,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:50,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:34:50,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317634272] [2020-10-13 14:34:50,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:34:50,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:50,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:34:50,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:50,309 INFO L87 Difference]: Start difference. First operand 4395 states and 6338 transitions. Second operand 4 states. [2020-10-13 14:34:52,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:52,900 INFO L93 Difference]: Finished difference Result 10768 states and 15913 transitions. [2020-10-13 14:34:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:34:52,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-13 14:34:52,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:52,918 INFO L225 Difference]: With dead ends: 10768 [2020-10-13 14:34:52,918 INFO L226 Difference]: Without dead ends: 7172 [2020-10-13 14:34:52,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:52,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7172 states. [2020-10-13 14:34:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7172 to 6070. [2020-10-13 14:34:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6070 states. [2020-10-13 14:34:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 8752 transitions. [2020-10-13 14:34:53,388 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 8752 transitions. Word has length 58 [2020-10-13 14:34:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:53,388 INFO L479 AbstractCegarLoop]: Abstraction has 6070 states and 8752 transitions. [2020-10-13 14:34:53,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:34:53,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 8752 transitions. [2020-10-13 14:34:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 14:34:53,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:53,391 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] [2020-10-13 14:34:53,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:34:53,391 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash -333955574, now seen corresponding path program 1 times [2020-10-13 14:34:53,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:53,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428319857] [2020-10-13 14:34:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:53,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:53,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:57,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 14:34:57,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:34:57,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3753 [2020-10-13 14:34:57,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:34:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:34:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:34:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:57,775 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:34:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:57,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:57,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:57,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:57,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:34:57,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:57,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:57,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428319857] [2020-10-13 14:34:57,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:57,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:34:57,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144474530] [2020-10-13 14:34:57,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:34:57,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:57,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:34:57,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:34:57,813 INFO L87 Difference]: Start difference. First operand 6070 states and 8752 transitions. Second operand 11 states. [2020-10-13 14:34:58,309 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:35:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:04,446 INFO L93 Difference]: Finished difference Result 16962 states and 24293 transitions. [2020-10-13 14:35:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 14:35:04,446 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-13 14:35:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:04,478 INFO L225 Difference]: With dead ends: 16962 [2020-10-13 14:35:04,478 INFO L226 Difference]: Without dead ends: 16958 [2020-10-13 14:35:04,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2020-10-13 14:35:04,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16958 states. [2020-10-13 14:35:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16958 to 6066. [2020-10-13 14:35:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-10-13 14:35:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8748 transitions. [2020-10-13 14:35:05,103 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8748 transitions. Word has length 60 [2020-10-13 14:35:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:05,104 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 8748 transitions. [2020-10-13 14:35:05,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:35:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8748 transitions. [2020-10-13 14:35:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 14:35:05,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:05,106 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] [2020-10-13 14:35:05,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:35:05,106 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:05,107 INFO L82 PathProgramCache]: Analyzing trace with hash 222953806, now seen corresponding path program 1 times [2020-10-13 14:35:05,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:05,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027384870] [2020-10-13 14:35:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:07,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:07,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 14:35:07,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:35:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2822 [2020-10-13 14:35:07,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:35:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:35:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:35:07,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:08,513 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:35:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:08,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:08,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:08,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:08,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:35:08,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:08,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027384870] [2020-10-13 14:35:08,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:08,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:35:08,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590516574] [2020-10-13 14:35:08,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:35:08,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:08,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:35:08,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:35:08,545 INFO L87 Difference]: Start difference. First operand 6066 states and 8748 transitions. Second operand 10 states. [2020-10-13 14:35:09,030 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:35:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:12,764 INFO L93 Difference]: Finished difference Result 10269 states and 14886 transitions. [2020-10-13 14:35:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 14:35:12,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2020-10-13 14:35:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:12,788 INFO L225 Difference]: With dead ends: 10269 [2020-10-13 14:35:12,788 INFO L226 Difference]: Without dead ends: 10265 [2020-10-13 14:35:12,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:35:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10265 states. [2020-10-13 14:35:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10265 to 6062. [2020-10-13 14:35:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6062 states. [2020-10-13 14:35:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 8743 transitions. [2020-10-13 14:35:13,356 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 8743 transitions. Word has length 60 [2020-10-13 14:35:13,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:13,356 INFO L479 AbstractCegarLoop]: Abstraction has 6062 states and 8743 transitions. [2020-10-13 14:35:13,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:35:13,356 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 8743 transitions. [2020-10-13 14:35:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 14:35:13,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:13,358 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] [2020-10-13 14:35:13,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:35:13,358 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:13,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:13,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1087512180, now seen corresponding path program 1 times [2020-10-13 14:35:13,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:13,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077805283] [2020-10-13 14:35:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:15,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 14:35:15,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:35:15,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2571 [2020-10-13 14:35:15,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:35:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 14:35:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:35:15,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:16,588 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:35:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:16,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:16,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:35:16,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:16,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077805283] [2020-10-13 14:35:16,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:16,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:35:16,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226509147] [2020-10-13 14:35:16,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:35:16,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:16,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:35:16,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:35:16,619 INFO L87 Difference]: Start difference. First operand 6062 states and 8743 transitions. Second operand 11 states. [2020-10-13 14:35:17,133 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-13 14:35:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:20,545 INFO L93 Difference]: Finished difference Result 10023 states and 14540 transitions. [2020-10-13 14:35:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:35:20,545 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-13 14:35:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:20,560 INFO L225 Difference]: With dead ends: 10023 [2020-10-13 14:35:20,561 INFO L226 Difference]: Without dead ends: 9650 [2020-10-13 14:35:20,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:35:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9650 states. [2020-10-13 14:35:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9650 to 6061. [2020-10-13 14:35:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6061 states. [2020-10-13 14:35:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 8740 transitions. [2020-10-13 14:35:21,206 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 8740 transitions. Word has length 60 [2020-10-13 14:35:21,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:21,206 INFO L479 AbstractCegarLoop]: Abstraction has 6061 states and 8740 transitions. [2020-10-13 14:35:21,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:35:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 8740 transitions. [2020-10-13 14:35:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 14:35:21,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:21,208 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] [2020-10-13 14:35:21,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:35:21,209 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:21,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:21,209 INFO L82 PathProgramCache]: Analyzing trace with hash 736452222, now seen corresponding path program 1 times [2020-10-13 14:35:21,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:21,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157802780] [2020-10-13 14:35:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:23,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:25,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 14:35:25,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:35:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3805 [2020-10-13 14:35:25,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:35:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:35:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:35:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:25,567 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:35:25,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:25,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:25,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:35:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:25,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157802780] [2020-10-13 14:35:25,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:25,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:35:25,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31792183] [2020-10-13 14:35:25,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:35:25,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:25,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:35:25,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:35:25,601 INFO L87 Difference]: Start difference. First operand 6061 states and 8740 transitions. Second operand 8 states. [2020-10-13 14:35:26,113 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:35:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:29,469 INFO L93 Difference]: Finished difference Result 10108 states and 14682 transitions. [2020-10-13 14:35:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:35:29,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-13 14:35:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:29,479 INFO L225 Difference]: With dead ends: 10108 [2020-10-13 14:35:29,480 INFO L226 Difference]: Without dead ends: 9632 [2020-10-13 14:35:29,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:35:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2020-10-13 14:35:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 5951. [2020-10-13 14:35:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5951 states. [2020-10-13 14:35:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5951 states to 5951 states and 8600 transitions. [2020-10-13 14:35:30,005 INFO L78 Accepts]: Start accepts. Automaton has 5951 states and 8600 transitions. Word has length 61 [2020-10-13 14:35:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:30,006 INFO L479 AbstractCegarLoop]: Abstraction has 5951 states and 8600 transitions. [2020-10-13 14:35:30,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:35:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5951 states and 8600 transitions. [2020-10-13 14:35:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:35:30,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:30,008 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] [2020-10-13 14:35:30,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:35:30,008 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:30,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1610434306, now seen corresponding path program 1 times [2020-10-13 14:35:30,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:30,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219616689] [2020-10-13 14:35:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:31,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:31,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:35:31,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:35:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1652 [2020-10-13 14:35:31,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 14:35:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 14:35:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:32,169 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:35:32,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:32,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:32,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:32,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:35:32,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:32,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219616689] [2020-10-13 14:35:32,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:32,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:35:32,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202469730] [2020-10-13 14:35:32,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:35:32,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:32,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:35:32,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:35:32,202 INFO L87 Difference]: Start difference. First operand 5951 states and 8600 transitions. Second operand 4 states. [2020-10-13 14:35:32,712 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-13 14:35:35,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:35,819 INFO L93 Difference]: Finished difference Result 15755 states and 23127 transitions. [2020-10-13 14:35:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:35:35,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-13 14:35:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:35,829 INFO L225 Difference]: With dead ends: 15755 [2020-10-13 14:35:35,829 INFO L226 Difference]: Without dead ends: 10628 [2020-10-13 14:35:35,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:35:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10628 states. [2020-10-13 14:35:36,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10628 to 9951. [2020-10-13 14:35:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9951 states. [2020-10-13 14:35:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9951 states to 9951 states and 14475 transitions. [2020-10-13 14:35:36,708 INFO L78 Accepts]: Start accepts. Automaton has 9951 states and 14475 transitions. Word has length 67 [2020-10-13 14:35:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:36,708 INFO L479 AbstractCegarLoop]: Abstraction has 9951 states and 14475 transitions. [2020-10-13 14:35:36,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:35:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9951 states and 14475 transitions. [2020-10-13 14:35:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:35:36,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:36,711 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] [2020-10-13 14:35:36,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:35:36,712 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:36,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:36,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1066091747, now seen corresponding path program 1 times [2020-10-13 14:35:36,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:36,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898773200] [2020-10-13 14:35:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:36,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:37,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:35:37,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:35:37,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-13 14:35:37,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:35:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:35:37,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:38,315 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:35:38,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:38,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:38,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:38,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:35:38,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:38,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898773200] [2020-10-13 14:35:38,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:38,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:35:38,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078163353] [2020-10-13 14:35:38,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:35:38,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:38,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:35:38,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:35:38,344 INFO L87 Difference]: Start difference. First operand 9951 states and 14475 transitions. Second operand 4 states. [2020-10-13 14:35:38,829 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-13 14:35:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:42,304 INFO L93 Difference]: Finished difference Result 25988 states and 37923 transitions. [2020-10-13 14:35:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:35:42,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 14:35:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:42,322 INFO L225 Difference]: With dead ends: 25988 [2020-10-13 14:35:42,322 INFO L226 Difference]: Without dead ends: 16861 [2020-10-13 14:35:42,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:35:42,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16861 states. [2020-10-13 14:35:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16861 to 16859. [2020-10-13 14:35:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16859 states. [2020-10-13 14:35:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16859 states to 16859 states and 24171 transitions. [2020-10-13 14:35:43,884 INFO L78 Accepts]: Start accepts. Automaton has 16859 states and 24171 transitions. Word has length 68 [2020-10-13 14:35:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:43,885 INFO L479 AbstractCegarLoop]: Abstraction has 16859 states and 24171 transitions. [2020-10-13 14:35:43,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:35:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 16859 states and 24171 transitions. [2020-10-13 14:35:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:35:43,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:43,887 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] [2020-10-13 14:35:43,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:35:43,887 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:43,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:43,887 INFO L82 PathProgramCache]: Analyzing trace with hash 988880556, now seen corresponding path program 1 times [2020-10-13 14:35:43,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:43,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834577690] [2020-10-13 14:35:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:44,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:44,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:44,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:35:44,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:35:44,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-13 14:35:44,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:35:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 14:35:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:35:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:45,350 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:35:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:45,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:45,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:45,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:35:45,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:45,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:45,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:45,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:45,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834577690] [2020-10-13 14:35:45,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:45,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:35:45,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990366712] [2020-10-13 14:35:45,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:35:45,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:45,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:35:45,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:35:45,381 INFO L87 Difference]: Start difference. First operand 16859 states and 24171 transitions. Second operand 6 states. [2020-10-13 14:35:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:50,757 INFO L93 Difference]: Finished difference Result 31066 states and 43881 transitions. [2020-10-13 14:35:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 14:35:50,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-13 14:35:50,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:50,803 INFO L225 Difference]: With dead ends: 31066 [2020-10-13 14:35:50,803 INFO L226 Difference]: Without dead ends: 31064 [2020-10-13 14:35:50,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:35:50,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31064 states. [2020-10-13 14:35:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31064 to 17609. [2020-10-13 14:35:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17609 states. [2020-10-13 14:35:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17609 states to 17609 states and 24921 transitions. [2020-10-13 14:35:52,827 INFO L78 Accepts]: Start accepts. Automaton has 17609 states and 24921 transitions. Word has length 69 [2020-10-13 14:35:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:52,827 INFO L479 AbstractCegarLoop]: Abstraction has 17609 states and 24921 transitions. [2020-10-13 14:35:52,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:35:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 17609 states and 24921 transitions. [2020-10-13 14:35:52,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:35:52,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:52,829 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] [2020-10-13 14:35:52,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:35:52,830 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash 704414421, now seen corresponding path program 1 times [2020-10-13 14:35:52,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:52,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607151472] [2020-10-13 14:35:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:55,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:55,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:35:55,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:35:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2234 [2020-10-13 14:35:55,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 14:35:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:35:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:55,559 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:35:55,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:55,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:55,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:55,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:35:55,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:55,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607151472] [2020-10-13 14:35:55,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:55,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:35:55,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113623028] [2020-10-13 14:35:55,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:35:55,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:55,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:35:55,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:35:55,589 INFO L87 Difference]: Start difference. First operand 17609 states and 24921 transitions. Second operand 4 states. [2020-10-13 14:35:56,101 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:36:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:01,299 INFO L93 Difference]: Finished difference Result 47531 states and 67231 transitions. [2020-10-13 14:36:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:36:01,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-13 14:36:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:01,333 INFO L225 Difference]: With dead ends: 47531 [2020-10-13 14:36:01,333 INFO L226 Difference]: Without dead ends: 30701 [2020-10-13 14:36:01,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:36:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30701 states. [2020-10-13 14:36:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30701 to 30253. [2020-10-13 14:36:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30253 states. [2020-10-13 14:36:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30253 states to 30253 states and 42100 transitions. [2020-10-13 14:36:04,693 INFO L78 Accepts]: Start accepts. Automaton has 30253 states and 42100 transitions. Word has length 70 [2020-10-13 14:36:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:04,693 INFO L479 AbstractCegarLoop]: Abstraction has 30253 states and 42100 transitions. [2020-10-13 14:36:04,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:36:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 30253 states and 42100 transitions. [2020-10-13 14:36:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 14:36:04,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:04,696 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] [2020-10-13 14:36:04,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:36:04,697 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:04,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1885737617, now seen corresponding path program 1 times [2020-10-13 14:36:04,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:04,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368134120] [2020-10-13 14:36:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:09,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:09,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 14:36:09,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:36:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:36:09,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:36:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 14:36:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 14:36:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:10,211 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:36:10,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:10,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:10,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:10,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:10,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:36:10,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:10,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368134120] [2020-10-13 14:36:10,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:10,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:36:10,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077572875] [2020-10-13 14:36:10,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:36:10,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:10,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:36:10,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:10,243 INFO L87 Difference]: Start difference. First operand 30253 states and 42100 transitions. Second operand 4 states. [2020-10-13 14:36:10,750 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-13 14:36:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:19,326 INFO L93 Difference]: Finished difference Result 85873 states and 119170 transitions. [2020-10-13 14:36:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:36:19,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-13 14:36:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:19,386 INFO L225 Difference]: With dead ends: 85873 [2020-10-13 14:36:19,386 INFO L226 Difference]: Without dead ends: 56432 [2020-10-13 14:36:19,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:36:19,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56432 states. [2020-10-13 14:36:25,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56432 to 51798. [2020-10-13 14:36:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51798 states. [2020-10-13 14:36:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51798 states to 51798 states and 71056 transitions. [2020-10-13 14:36:25,628 INFO L78 Accepts]: Start accepts. Automaton has 51798 states and 71056 transitions. Word has length 73 [2020-10-13 14:36:25,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:25,628 INFO L479 AbstractCegarLoop]: Abstraction has 51798 states and 71056 transitions. [2020-10-13 14:36:25,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:36:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 51798 states and 71056 transitions. [2020-10-13 14:36:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 14:36:25,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:25,635 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] [2020-10-13 14:36:25,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:36:25,635 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash -421682049, now seen corresponding path program 1 times [2020-10-13 14:36:25,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:25,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528844098] [2020-10-13 14:36:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:25,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:25,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:26,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:28,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:30,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:30,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 14:36:30,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:36:30,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:36:30,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:36:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 14:36:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 14:36:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:31,167 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:36:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:31,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:31,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:31,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:31,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:31,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:36:31,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:31,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:31,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:31,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:31,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:31,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528844098] [2020-10-13 14:36:31,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:31,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:36:31,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918629021] [2020-10-13 14:36:31,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:36:31,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:31,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:36:31,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:31,202 INFO L87 Difference]: Start difference. First operand 51798 states and 71056 transitions. Second operand 4 states. [2020-10-13 14:36:31,734 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-13 14:36:43,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:43,488 INFO L93 Difference]: Finished difference Result 131866 states and 180838 transitions. [2020-10-13 14:36:43,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:36:43,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-13 14:36:43,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:43,585 INFO L225 Difference]: With dead ends: 131866 [2020-10-13 14:36:43,586 INFO L226 Difference]: Without dead ends: 80816 [2020-10-13 14:36:43,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:36:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80816 states. [2020-10-13 14:36:54,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80816 to 73290. [2020-10-13 14:36:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73290 states. [2020-10-13 14:36:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73290 states to 73290 states and 99260 transitions. [2020-10-13 14:36:54,230 INFO L78 Accepts]: Start accepts. Automaton has 73290 states and 99260 transitions. Word has length 82 [2020-10-13 14:36:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:54,230 INFO L479 AbstractCegarLoop]: Abstraction has 73290 states and 99260 transitions. [2020-10-13 14:36:54,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:36:54,231 INFO L276 IsEmpty]: Start isEmpty. Operand 73290 states and 99260 transitions. [2020-10-13 14:36:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 14:36:54,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:54,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:36:54,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:36:54,240 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:54,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1958316701, now seen corresponding path program 1 times [2020-10-13 14:36:54,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:54,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134685920] [2020-10-13 14:36:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:54,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:54,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:54,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:55,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:55,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 14:36:55,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:36:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-13 14:36:55,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:36:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:36:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:36:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:56,120 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:36:56,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:56,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:56,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:56,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:56,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:36:56,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 14:36:56,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134685920] [2020-10-13 14:36:56,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:56,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:36:56,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985482232] [2020-10-13 14:36:56,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:36:56,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:56,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:36:56,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:36:56,169 INFO L87 Difference]: Start difference. First operand 73290 states and 99260 transitions. Second operand 6 states.