/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:42:48,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:42:48,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:42:48,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:42:48,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:42:48,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:42:48,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:42:48,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:42:48,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:42:48,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:42:48,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:42:48,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:42:48,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:42:48,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:42:48,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:42:48,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:42:48,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:42:48,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:42:48,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:42:48,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:42:48,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:42:48,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:42:48,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:42:48,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:42:48,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:42:48,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:42:48,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:42:48,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:42:48,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:42:48,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:42:48,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:42:48,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:42:48,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:42:48,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:42:48,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:42:48,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:42:48,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:42:48,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:42:48,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:42:48,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:42:48,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:42:48,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:42:48,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:42:48,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:42:48,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:42:48,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:42:48,153 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:42:48,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:42:48,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:42:48,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:42:48,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:42:48,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:42:48,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:42:48,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:42:48,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:42:48,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:42:48,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:42:48,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:42:48,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:42:48,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:42:48,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:42:48,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:42:48,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:42:48,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:42:48,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:42:48,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:42:48,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:42:48,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:42:48,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:42:48,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:42:48,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:42:48,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:42:48,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:42:48,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:42:48,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:42:48,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:42:48,510 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:42:48,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:42:48,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d73e93b7/97f1b2bd33d945c68390f82aae4755bc/FLAG1b21c51f0 [2020-10-15 03:42:49,050 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:42:49,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:42:49,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d73e93b7/97f1b2bd33d945c68390f82aae4755bc/FLAG1b21c51f0 [2020-10-15 03:42:49,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d73e93b7/97f1b2bd33d945c68390f82aae4755bc [2020-10-15 03:42:49,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:42:49,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:42:49,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:42:49,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:42:49,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:42:49,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54116fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49, skipping insertion in model container [2020-10-15 03:42:49,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:42:49,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:42:49,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:42:49,669 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:42:49,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:42:49,836 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:42:49,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49 WrapperNode [2020-10-15 03:42:49,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:42:49,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:42:49,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:42:49,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:42:49,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:42:49,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:42:49,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:42:49,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:42:49,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:42:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:42:49,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:42:49,981 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:42:49,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:42:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:42:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:42:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:42:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:42:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:42:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:42:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:42:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:42:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:42:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:42:50,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:42:50,609 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:42:50,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:42:50 BoogieIcfgContainer [2020-10-15 03:42:50,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:42:50,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:42:50,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:42:50,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:42:50,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:42:49" (1/3) ... [2020-10-15 03:42:50,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c85f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:42:50, skipping insertion in model container [2020-10-15 03:42:50,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49" (2/3) ... [2020-10-15 03:42:50,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c85f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:42:50, skipping insertion in model container [2020-10-15 03:42:50,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:42:50" (3/3) ... [2020-10-15 03:42:50,629 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:42:50,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:42:50,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:42:50,669 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:42:50,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:42:50,704 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:42:50,704 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:42:50,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:42:50,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:42:50,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:42:50,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:42:50,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:42:50,728 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-10-15 03:42:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 03:42:50,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:50,739 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] [2020-10-15 03:42:50,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:50,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1677922447, now seen corresponding path program 1 times [2020-10-15 03:42:50,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:50,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022833830] [2020-10-15 03:42:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:51,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:51,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 03:42:51,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:42:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-10-15 03:42:51,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:51,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:42:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:42:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:42:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:42:52,198 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-15 03:42:52,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:52,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:52,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:52,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:52,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:52,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:42:52,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:52,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:42:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:52,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022833830] [2020-10-15 03:42:52,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:52,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:42:52,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901231124] [2020-10-15 03:42:52,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:42:52,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:52,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:42:52,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:42:52,300 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 6 states. [2020-10-15 03:42:52,510 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-15 03:42:53,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:53,026 INFO L93 Difference]: Finished difference Result 364 states and 567 transitions. [2020-10-15 03:42:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:42:53,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-10-15 03:42:53,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:53,062 INFO L225 Difference]: With dead ends: 364 [2020-10-15 03:42:53,062 INFO L226 Difference]: Without dead ends: 280 [2020-10-15 03:42:53,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:42:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-15 03:42:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 150. [2020-10-15 03:42:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-15 03:42:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 223 transitions. [2020-10-15 03:42:53,192 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 223 transitions. Word has length 42 [2020-10-15 03:42:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:53,194 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 223 transitions. [2020-10-15 03:42:53,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:42:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 223 transitions. [2020-10-15 03:42:53,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 03:42:53,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:53,198 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] [2020-10-15 03:42:53,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:42:53,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:53,200 INFO L82 PathProgramCache]: Analyzing trace with hash 457455518, now seen corresponding path program 1 times [2020-10-15 03:42:53,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:53,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251916436] [2020-10-15 03:42:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:53,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 03:42:53,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:42:53,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-15 03:42:53,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:53,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-15 03:42:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 03:42:53,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:53,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:53,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:53,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:42:53,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:53,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:53,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:53,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251916436] [2020-10-15 03:42:53,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:53,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:42:53,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774269967] [2020-10-15 03:42:53,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:42:53,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:53,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:42:53,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:42:53,910 INFO L87 Difference]: Start difference. First operand 150 states and 223 transitions. Second operand 4 states. [2020-10-15 03:42:54,079 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-15 03:42:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:54,513 INFO L93 Difference]: Finished difference Result 370 states and 569 transitions. [2020-10-15 03:42:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:42:54,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-15 03:42:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:54,516 INFO L225 Difference]: With dead ends: 370 [2020-10-15 03:42:54,517 INFO L226 Difference]: Without dead ends: 244 [2020-10-15 03:42:54,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:42:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-15 03:42:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2020-10-15 03:42:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-15 03:42:54,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 367 transitions. [2020-10-15 03:42:54,547 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 367 transitions. Word has length 43 [2020-10-15 03:42:54,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:54,547 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 367 transitions. [2020-10-15 03:42:54,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:42:54,548 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 367 transitions. [2020-10-15 03:42:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 03:42:54,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:54,550 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] [2020-10-15 03:42:54,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:42:54,551 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:54,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:54,551 INFO L82 PathProgramCache]: Analyzing trace with hash -86574123, now seen corresponding path program 1 times [2020-10-15 03:42:54,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:54,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443442184] [2020-10-15 03:42:54,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:54,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:54,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:54,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 03:42:54,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:42:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-15 03:42:54,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:54,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-15 03:42:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 03:42:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:55,115 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-15 03:42:55,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:55,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:55,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:55,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:55,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:42:55,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:55,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:55,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:55,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:55,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:55,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:55,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443442184] [2020-10-15 03:42:55,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:55,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:42:55,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680851175] [2020-10-15 03:42:55,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:42:55,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:55,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:42:55,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:42:55,163 INFO L87 Difference]: Start difference. First operand 242 states and 367 transitions. Second operand 4 states. [2020-10-15 03:42:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:55,620 INFO L93 Difference]: Finished difference Result 614 states and 949 transitions. [2020-10-15 03:42:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:42:55,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-15 03:42:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:55,623 INFO L225 Difference]: With dead ends: 614 [2020-10-15 03:42:55,623 INFO L226 Difference]: Without dead ends: 396 [2020-10-15 03:42:55,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:42:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-15 03:42:55,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2020-10-15 03:42:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-15 03:42:55,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 601 transitions. [2020-10-15 03:42:55,652 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 601 transitions. Word has length 44 [2020-10-15 03:42:55,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:55,652 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 601 transitions. [2020-10-15 03:42:55,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:42:55,652 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 601 transitions. [2020-10-15 03:42:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 03:42:55,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:55,654 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] [2020-10-15 03:42:55,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:42:55,655 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:55,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:55,655 INFO L82 PathProgramCache]: Analyzing trace with hash 899702325, now seen corresponding path program 1 times [2020-10-15 03:42:55,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:55,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597958710] [2020-10-15 03:42:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:56,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:56,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-15 03:42:56,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:42:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-15 03:42:56,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:56,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:42:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:42:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:42:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:42:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:56,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:56,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:56,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:42:56,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:56,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 03:42:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:56,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597958710] [2020-10-15 03:42:56,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:56,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:42:56,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567595444] [2020-10-15 03:42:56,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:42:56,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:56,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:42:56,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:42:56,349 INFO L87 Difference]: Start difference. First operand 394 states and 601 transitions. Second operand 6 states. [2020-10-15 03:42:57,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:57,033 INFO L93 Difference]: Finished difference Result 1352 states and 2084 transitions. [2020-10-15 03:42:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:42:57,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-15 03:42:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:57,042 INFO L225 Difference]: With dead ends: 1352 [2020-10-15 03:42:57,042 INFO L226 Difference]: Without dead ends: 982 [2020-10-15 03:42:57,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:42:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-10-15 03:42:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 978. [2020-10-15 03:42:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-10-15 03:42:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1497 transitions. [2020-10-15 03:42:57,123 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1497 transitions. Word has length 45 [2020-10-15 03:42:57,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:57,125 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1497 transitions. [2020-10-15 03:42:57,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:42:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1497 transitions. [2020-10-15 03:42:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 03:42:57,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:57,137 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] [2020-10-15 03:42:57,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:42:57,138 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:57,138 INFO L82 PathProgramCache]: Analyzing trace with hash 869187691, now seen corresponding path program 1 times [2020-10-15 03:42:57,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:57,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880180205] [2020-10-15 03:42:57,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:57,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:57,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 03:42:57,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:42:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-15 03:42:57,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:57,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 03:42:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 03:42:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:57,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:57,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:57,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:42:57,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:57,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:57,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880180205] [2020-10-15 03:42:57,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:57,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:42:57,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354441406] [2020-10-15 03:42:57,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:42:57,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:57,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:42:57,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:42:57,593 INFO L87 Difference]: Start difference. First operand 978 states and 1497 transitions. Second operand 4 states. [2020-10-15 03:42:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:58,286 INFO L93 Difference]: Finished difference Result 2494 states and 3811 transitions. [2020-10-15 03:42:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:42:58,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-15 03:42:58,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:58,298 INFO L225 Difference]: With dead ends: 2494 [2020-10-15 03:42:58,298 INFO L226 Difference]: Without dead ends: 1540 [2020-10-15 03:42:58,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:42:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-10-15 03:42:58,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1538. [2020-10-15 03:42:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2020-10-15 03:42:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2313 transitions. [2020-10-15 03:42:58,434 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2313 transitions. Word has length 46 [2020-10-15 03:42:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:58,435 INFO L479 AbstractCegarLoop]: Abstraction has 1538 states and 2313 transitions. [2020-10-15 03:42:58,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:42:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2313 transitions. [2020-10-15 03:42:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 03:42:58,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:58,436 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] [2020-10-15 03:42:58,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:42:58,437 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:58,437 INFO L82 PathProgramCache]: Analyzing trace with hash -281581922, now seen corresponding path program 1 times [2020-10-15 03:42:58,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:58,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082362468] [2020-10-15 03:42:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:58,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:58,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:58,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 03:42:58,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:42:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-15 03:42:58,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:58,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:42:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:42:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 03:42:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:58,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:58,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:58,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:58,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:58,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:42:58,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:58,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:58,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:58,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:58,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:42:58,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:58,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082362468] [2020-10-15 03:42:58,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:58,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:42:58,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020437226] [2020-10-15 03:42:58,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:42:58,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:58,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:42:58,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:42:58,983 INFO L87 Difference]: Start difference. First operand 1538 states and 2313 transitions. Second operand 6 states. [2020-10-15 03:42:59,113 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:42:59,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:59,796 INFO L93 Difference]: Finished difference Result 4526 states and 6811 transitions. [2020-10-15 03:42:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:42:59,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-15 03:42:59,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:59,813 INFO L225 Difference]: With dead ends: 4526 [2020-10-15 03:42:59,813 INFO L226 Difference]: Without dead ends: 3012 [2020-10-15 03:42:59,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:42:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2020-10-15 03:43:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 3010. [2020-10-15 03:43:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3010 states. [2020-10-15 03:43:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4481 transitions. [2020-10-15 03:43:00,068 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4481 transitions. Word has length 47 [2020-10-15 03:43:00,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:00,069 INFO L479 AbstractCegarLoop]: Abstraction has 3010 states and 4481 transitions. [2020-10-15 03:43:00,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4481 transitions. [2020-10-15 03:43:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 03:43:00,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:00,070 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] [2020-10-15 03:43:00,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:43:00,071 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:00,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1095993917, now seen corresponding path program 1 times [2020-10-15 03:43:00,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:00,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028778786] [2020-10-15 03:43:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:00,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 03:43:00,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-15 03:43:00,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:00,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:43:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 03:43:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:43:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:00,418 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-15 03:43:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:00,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:00,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:00,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:00,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:43:00,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:00,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:00,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028778786] [2020-10-15 03:43:00,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:00,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:43:00,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029398631] [2020-10-15 03:43:00,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:43:00,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:00,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:43:00,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:43:00,451 INFO L87 Difference]: Start difference. First operand 3010 states and 4481 transitions. Second operand 5 states. [2020-10-15 03:43:01,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:01,374 INFO L93 Difference]: Finished difference Result 6188 states and 9130 transitions. [2020-10-15 03:43:01,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:43:01,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-15 03:43:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:01,405 INFO L225 Difference]: With dead ends: 6188 [2020-10-15 03:43:01,405 INFO L226 Difference]: Without dead ends: 6186 [2020-10-15 03:43:01,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2020-10-15 03:43:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 3202. [2020-10-15 03:43:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3202 states. [2020-10-15 03:43:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 4673 transitions. [2020-10-15 03:43:01,774 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 4673 transitions. Word has length 47 [2020-10-15 03:43:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:01,774 INFO L479 AbstractCegarLoop]: Abstraction has 3202 states and 4673 transitions. [2020-10-15 03:43:01,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:43:01,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 4673 transitions. [2020-10-15 03:43:01,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 03:43:01,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:01,776 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] [2020-10-15 03:43:01,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:43:01,777 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:01,777 INFO L82 PathProgramCache]: Analyzing trace with hash 393546649, now seen corresponding path program 1 times [2020-10-15 03:43:01,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:01,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050783823] [2020-10-15 03:43:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:01,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:01,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 03:43:01,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:01,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-15 03:43:01,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:01,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:43:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:43:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:01,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:02,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:02,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:02,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:02,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:43:02,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:02,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:02,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050783823] [2020-10-15 03:43:02,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:02,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:43:02,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109045307] [2020-10-15 03:43:02,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:43:02,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:02,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:43:02,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:43:02,020 INFO L87 Difference]: Start difference. First operand 3202 states and 4673 transitions. Second operand 4 states. [2020-10-15 03:43:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:02,714 INFO L93 Difference]: Finished difference Result 7092 states and 10337 transitions. [2020-10-15 03:43:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:43:02,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-15 03:43:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:02,733 INFO L225 Difference]: With dead ends: 7092 [2020-10-15 03:43:02,733 INFO L226 Difference]: Without dead ends: 3914 [2020-10-15 03:43:02,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:43:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2020-10-15 03:43:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3892. [2020-10-15 03:43:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3892 states. [2020-10-15 03:43:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3892 states to 3892 states and 5627 transitions. [2020-10-15 03:43:03,029 INFO L78 Accepts]: Start accepts. Automaton has 3892 states and 5627 transitions. Word has length 48 [2020-10-15 03:43:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:03,029 INFO L479 AbstractCegarLoop]: Abstraction has 3892 states and 5627 transitions. [2020-10-15 03:43:03,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:43:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3892 states and 5627 transitions. [2020-10-15 03:43:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:43:03,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:03,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:03,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:43:03,034 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:03,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:03,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1259242370, now seen corresponding path program 1 times [2020-10-15 03:43:03,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:03,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115479152] [2020-10-15 03:43:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:03,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:04,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:04,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:43:04,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:43:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-15 03:43:04,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:04,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:43:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:43:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:43:04,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:04,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:04,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:04,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:04,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:43:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:04,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 03:43:04,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115479152] [2020-10-15 03:43:04,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:43:04,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 03:43:04,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390066274] [2020-10-15 03:43:04,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:43:04,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:04,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:43:04,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:43:04,447 INFO L87 Difference]: Start difference. First operand 3892 states and 5627 transitions. Second operand 5 states. [2020-10-15 03:43:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:05,460 INFO L93 Difference]: Finished difference Result 9750 states and 14122 transitions. [2020-10-15 03:43:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:43:05,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-15 03:43:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:05,493 INFO L225 Difference]: With dead ends: 9750 [2020-10-15 03:43:05,494 INFO L226 Difference]: Without dead ends: 6572 [2020-10-15 03:43:05,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:43:05,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2020-10-15 03:43:06,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 6524. [2020-10-15 03:43:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6524 states. [2020-10-15 03:43:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6524 states to 6524 states and 9295 transitions. [2020-10-15 03:43:06,037 INFO L78 Accepts]: Start accepts. Automaton has 6524 states and 9295 transitions. Word has length 67 [2020-10-15 03:43:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:06,037 INFO L479 AbstractCegarLoop]: Abstraction has 6524 states and 9295 transitions. [2020-10-15 03:43:06,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:43:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 6524 states and 9295 transitions. [2020-10-15 03:43:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:43:06,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:06,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:06,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:43:06,041 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:06,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1832759001, now seen corresponding path program 1 times [2020-10-15 03:43:06,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:06,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011903692] [2020-10-15 03:43:06,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:06,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:06,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:11,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:11,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:43:11,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:43:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:43:11,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:11,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:43:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:43:11,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:11,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:11,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:11,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:11,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:11,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:11,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:43:11,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:11,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:11,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:11,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:11,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:11,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 03:43:11,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011903692] [2020-10-15 03:43:11,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:43:11,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:43:11,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367089945] [2020-10-15 03:43:11,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:11,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:11,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:11,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:11,221 INFO L87 Difference]: Start difference. First operand 6524 states and 9295 transitions. Second operand 6 states. [2020-10-15 03:43:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:12,596 INFO L93 Difference]: Finished difference Result 15317 states and 22119 transitions. [2020-10-15 03:43:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:43:12,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-15 03:43:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:12,646 INFO L225 Difference]: With dead ends: 15317 [2020-10-15 03:43:12,646 INFO L226 Difference]: Without dead ends: 12279 [2020-10-15 03:43:12,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:43:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12279 states. [2020-10-15 03:43:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12279 to 10710. [2020-10-15 03:43:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10710 states. [2020-10-15 03:43:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10710 states to 10710 states and 15271 transitions. [2020-10-15 03:43:13,501 INFO L78 Accepts]: Start accepts. Automaton has 10710 states and 15271 transitions. Word has length 67 [2020-10-15 03:43:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:13,501 INFO L479 AbstractCegarLoop]: Abstraction has 10710 states and 15271 transitions. [2020-10-15 03:43:13,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:13,502 INFO L276 IsEmpty]: Start isEmpty. Operand 10710 states and 15271 transitions. [2020-10-15 03:43:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:43:13,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:13,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:13,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:43:13,505 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:13,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:13,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1975372464, now seen corresponding path program 1 times [2020-10-15 03:43:13,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:13,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875120680] [2020-10-15 03:43:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:18,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:43:18,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:43:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:43:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:18,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:43:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:43:18,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:18,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:18,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875120680] [2020-10-15 03:43:18,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:43:18,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 03:43:18,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313393916] [2020-10-15 03:43:18,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:18,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:18,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:18,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:18,840 INFO L87 Difference]: Start difference. First operand 10710 states and 15271 transitions. Second operand 9 states. [2020-10-15 03:43:19,033 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:43:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:25,445 INFO L93 Difference]: Finished difference Result 65694 states and 92410 transitions. [2020-10-15 03:43:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 03:43:25,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-15 03:43:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:25,576 INFO L225 Difference]: With dead ends: 65694 [2020-10-15 03:43:25,576 INFO L226 Difference]: Without dead ends: 55010 [2020-10-15 03:43:25,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 03:43:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55010 states. [2020-10-15 03:43:28,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55010 to 17866. [2020-10-15 03:43:28,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17866 states. [2020-10-15 03:43:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17866 states to 17866 states and 25302 transitions. [2020-10-15 03:43:28,115 INFO L78 Accepts]: Start accepts. Automaton has 17866 states and 25302 transitions. Word has length 67 [2020-10-15 03:43:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:28,115 INFO L479 AbstractCegarLoop]: Abstraction has 17866 states and 25302 transitions. [2020-10-15 03:43:28,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:43:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 17866 states and 25302 transitions. [2020-10-15 03:43:28,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:43:28,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:28,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:28,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:43:28,120 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:28,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:28,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2044215737, now seen corresponding path program 1 times [2020-10-15 03:43:28,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:28,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84714559] [2020-10-15 03:43:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:28,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:28,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:28,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:28,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:30,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:43:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:43:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:43:33,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:33,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:43:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:43:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:33,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:33,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:33,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:33,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:43:33,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:33,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:33,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-15 03:43:33,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84714559] [2020-10-15 03:43:33,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:43:33,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:43:33,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546378568] [2020-10-15 03:43:33,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:33,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:33,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:33,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:33,299 INFO L87 Difference]: Start difference. First operand 17866 states and 25302 transitions. Second operand 6 states. [2020-10-15 03:43:33,458 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-15 03:43:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:35,279 INFO L93 Difference]: Finished difference Result 26968 states and 38208 transitions. [2020-10-15 03:43:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:43:35,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-15 03:43:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:35,351 INFO L225 Difference]: With dead ends: 26968 [2020-10-15 03:43:35,352 INFO L226 Difference]: Without dead ends: 23016 [2020-10-15 03:43:35,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:43:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23016 states. [2020-10-15 03:43:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23016 to 19907. [2020-10-15 03:43:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19907 states. [2020-10-15 03:43:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19907 states to 19907 states and 28173 transitions. [2020-10-15 03:43:37,014 INFO L78 Accepts]: Start accepts. Automaton has 19907 states and 28173 transitions. Word has length 67 [2020-10-15 03:43:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:37,015 INFO L479 AbstractCegarLoop]: Abstraction has 19907 states and 28173 transitions. [2020-10-15 03:43:37,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 19907 states and 28173 transitions. [2020-10-15 03:43:37,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:43:37,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:37,019 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] [2020-10-15 03:43:37,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:43:37,019 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:37,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1489332385, now seen corresponding path program 1 times [2020-10-15 03:43:37,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:37,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269055405] [2020-10-15 03:43:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:38,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:40,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:40,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:43:40,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:43:40,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3475 [2020-10-15 03:43:40,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:40,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:43:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:43:40,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:40,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:40,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:40,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:40,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:43:40,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:40,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:40,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 03:43:40,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269055405] [2020-10-15 03:43:40,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:43:40,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:43:40,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558865674] [2020-10-15 03:43:40,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:40,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:40,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:40,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:40,640 INFO L87 Difference]: Start difference. First operand 19907 states and 28173 transitions. Second operand 6 states. [2020-10-15 03:43:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:42,900 INFO L93 Difference]: Finished difference Result 32096 states and 45597 transitions. [2020-10-15 03:43:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:43:42,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-15 03:43:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:42,954 INFO L225 Difference]: With dead ends: 32096 [2020-10-15 03:43:42,955 INFO L226 Difference]: Without dead ends: 25476 [2020-10-15 03:43:42,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:43:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25476 states. [2020-10-15 03:43:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25476 to 21571. [2020-10-15 03:43:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21571 states. [2020-10-15 03:43:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21571 states to 21571 states and 30499 transitions. [2020-10-15 03:43:44,725 INFO L78 Accepts]: Start accepts. Automaton has 21571 states and 30499 transitions. Word has length 68 [2020-10-15 03:43:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:44,725 INFO L479 AbstractCegarLoop]: Abstraction has 21571 states and 30499 transitions. [2020-10-15 03:43:44,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 21571 states and 30499 transitions. [2020-10-15 03:43:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:43:44,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:44,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:44,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:43:44,731 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:44,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:44,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1127996482, now seen corresponding path program 1 times [2020-10-15 03:43:44,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:44,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268433631] [2020-10-15 03:43:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:45,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:49,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:49,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:43:49,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:43:49,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:43:49,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:49,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:43:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:43:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:49,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:49,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:49,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:49,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:43:49,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:49,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:49,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268433631] [2020-10-15 03:43:49,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:49,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:43:49,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676982357] [2020-10-15 03:43:49,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:49,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:49,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:49,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:49,930 INFO L87 Difference]: Start difference. First operand 21571 states and 30499 transitions. Second operand 6 states. [2020-10-15 03:43:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:52,794 INFO L93 Difference]: Finished difference Result 49095 states and 69511 transitions. [2020-10-15 03:43:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:43:52,795 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:43:52,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:52,851 INFO L225 Difference]: With dead ends: 49095 [2020-10-15 03:43:52,851 INFO L226 Difference]: Without dead ends: 30374 [2020-10-15 03:43:52,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:52,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30374 states. [2020-10-15 03:43:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30374 to 30370. [2020-10-15 03:43:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30370 states. [2020-10-15 03:43:55,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30370 states to 30370 states and 42393 transitions. [2020-10-15 03:43:55,414 INFO L78 Accepts]: Start accepts. Automaton has 30370 states and 42393 transitions. Word has length 70 [2020-10-15 03:43:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:55,415 INFO L479 AbstractCegarLoop]: Abstraction has 30370 states and 42393 transitions. [2020-10-15 03:43:55,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:55,415 INFO L276 IsEmpty]: Start isEmpty. Operand 30370 states and 42393 transitions. [2020-10-15 03:43:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:43:55,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:55,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:55,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:43:55,420 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:55,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1082549269, now seen corresponding path program 1 times [2020-10-15 03:43:55,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:55,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686360652] [2020-10-15 03:43:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:55,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:00,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:00,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:44:00,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:44:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:44:00,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:00,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:44:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:44:00,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:44:00,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:00,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:00,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:44:00,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:00,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:00,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686360652] [2020-10-15 03:44:00,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:44:00,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 03:44:00,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771795991] [2020-10-15 03:44:00,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:44:00,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:00,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:44:00,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:00,658 INFO L87 Difference]: Start difference. First operand 30370 states and 42393 transitions. Second operand 8 states. [2020-10-15 03:44:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:07,243 INFO L93 Difference]: Finished difference Result 88672 states and 123496 transitions. [2020-10-15 03:44:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:44:07,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-15 03:44:07,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:07,322 INFO L225 Difference]: With dead ends: 88672 [2020-10-15 03:44:07,322 INFO L226 Difference]: Without dead ends: 58329 [2020-10-15 03:44:07,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:44:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58329 states. [2020-10-15 03:44:10,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58329 to 32322. [2020-10-15 03:44:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32322 states. [2020-10-15 03:44:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32322 states to 32322 states and 44666 transitions. [2020-10-15 03:44:10,302 INFO L78 Accepts]: Start accepts. Automaton has 32322 states and 44666 transitions. Word has length 70 [2020-10-15 03:44:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:10,302 INFO L479 AbstractCegarLoop]: Abstraction has 32322 states and 44666 transitions. [2020-10-15 03:44:10,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:44:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 32322 states and 44666 transitions. [2020-10-15 03:44:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:44:10,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:10,307 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] [2020-10-15 03:44:10,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:44:10,307 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:10,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1081981508, now seen corresponding path program 1 times [2020-10-15 03:44:10,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:10,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334871656] [2020-10-15 03:44:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:12,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:12,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:44:12,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2081 [2020-10-15 03:44:12,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:12,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:44:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:44:12,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:12,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:12,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:12,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:12,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:12,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:44:12,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:12,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:12,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334871656] [2020-10-15 03:44:12,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:44:12,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 03:44:12,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183242884] [2020-10-15 03:44:12,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:44:12,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:12,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:44:12,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:12,642 INFO L87 Difference]: Start difference. First operand 32322 states and 44666 transitions. Second operand 8 states. [2020-10-15 03:44:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:21,045 INFO L93 Difference]: Finished difference Result 111366 states and 153626 transitions. [2020-10-15 03:44:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:44:21,045 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-15 03:44:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:21,174 INFO L225 Difference]: With dead ends: 111366 [2020-10-15 03:44:21,174 INFO L226 Difference]: Without dead ends: 79071 [2020-10-15 03:44:21,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:44:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79071 states. [2020-10-15 03:44:26,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79071 to 43252. [2020-10-15 03:44:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43252 states. [2020-10-15 03:44:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43252 states to 43252 states and 58562 transitions. [2020-10-15 03:44:27,045 INFO L78 Accepts]: Start accepts. Automaton has 43252 states and 58562 transitions. Word has length 71 [2020-10-15 03:44:27,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:27,045 INFO L479 AbstractCegarLoop]: Abstraction has 43252 states and 58562 transitions. [2020-10-15 03:44:27,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:44:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 43252 states and 58562 transitions. [2020-10-15 03:44:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:44:27,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:27,051 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] [2020-10-15 03:44:27,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:44:27,051 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:27,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:27,051 INFO L82 PathProgramCache]: Analyzing trace with hash -955523598, now seen corresponding path program 1 times [2020-10-15 03:44:27,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:27,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989028012] [2020-10-15 03:44:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:30,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:44:30,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:44:30,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3288 [2020-10-15 03:44:30,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:30,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:44:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:44:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:30,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:30,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:30,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:30,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:44:30,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:30,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:30,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:30,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989028012] [2020-10-15 03:44:30,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:44:30,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 03:44:30,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728147035] [2020-10-15 03:44:30,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:44:30,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:30,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:44:30,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:30,586 INFO L87 Difference]: Start difference. First operand 43252 states and 58562 transitions. Second operand 8 states. [2020-10-15 03:44:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:37,446 INFO L93 Difference]: Finished difference Result 102516 states and 138467 transitions. [2020-10-15 03:44:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:44:37,446 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-15 03:44:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:37,521 INFO L225 Difference]: With dead ends: 102516 [2020-10-15 03:44:37,521 INFO L226 Difference]: Without dead ends: 59291 [2020-10-15 03:44:37,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:44:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59291 states. [2020-10-15 03:44:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59291 to 43367. [2020-10-15 03:44:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43367 states. [2020-10-15 03:44:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43367 states to 43367 states and 57613 transitions. [2020-10-15 03:44:42,122 INFO L78 Accepts]: Start accepts. Automaton has 43367 states and 57613 transitions. Word has length 71 [2020-10-15 03:44:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:42,122 INFO L479 AbstractCegarLoop]: Abstraction has 43367 states and 57613 transitions. [2020-10-15 03:44:42,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:44:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 43367 states and 57613 transitions. [2020-10-15 03:44:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:44:42,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:42,127 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] [2020-10-15 03:44:42,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:44:42,127 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash -645090733, now seen corresponding path program 1 times [2020-10-15 03:44:42,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:42,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413096982] [2020-10-15 03:44:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:42,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:44,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:47,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:47,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:44:47,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:44:47,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:44:47,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:47,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:44:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:44:47,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:47,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:47,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:47,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:47,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:44:47,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:47,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:47,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:47,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413096982] [2020-10-15 03:44:47,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:44:47,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:44:47,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220676864] [2020-10-15 03:44:47,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:44:47,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:47,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:44:47,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:47,329 INFO L87 Difference]: Start difference. First operand 43367 states and 57613 transitions. Second operand 9 states. [2020-10-15 03:45:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:06,745 INFO L93 Difference]: Finished difference Result 193380 states and 254174 transitions. [2020-10-15 03:45:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 03:45:06,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-15 03:45:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:06,949 INFO L225 Difference]: With dead ends: 193380 [2020-10-15 03:45:06,949 INFO L226 Difference]: Without dead ends: 154025 [2020-10-15 03:45:07,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-15 03:45:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154025 states. [2020-10-15 03:45:15,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154025 to 48136. [2020-10-15 03:45:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48136 states. [2020-10-15 03:45:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48136 states to 48136 states and 63748 transitions. [2020-10-15 03:45:15,874 INFO L78 Accepts]: Start accepts. Automaton has 48136 states and 63748 transitions. Word has length 73 [2020-10-15 03:45:15,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:15,874 INFO L479 AbstractCegarLoop]: Abstraction has 48136 states and 63748 transitions. [2020-10-15 03:45:15,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:45:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 48136 states and 63748 transitions. [2020-10-15 03:45:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:45:15,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:15,879 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] [2020-10-15 03:45:15,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:45:15,880 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:15,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:15,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1712636146, now seen corresponding path program 1 times [2020-10-15 03:45:15,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:15,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274978988] [2020-10-15 03:45:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:15,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:16,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:16,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:18,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:18,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:45:18,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:45:18,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2612 [2020-10-15 03:45:18,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:18,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:45:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:45:18,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:18,736 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 24 [2020-10-15 03:45:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:18,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:18,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:18,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:18,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:45:18,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:18,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:18,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274978988] [2020-10-15 03:45:18,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:45:18,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 03:45:18,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513715513] [2020-10-15 03:45:18,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:45:18,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:18,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:45:18,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:45:18,880 INFO L87 Difference]: Start difference. First operand 48136 states and 63748 transitions. Second operand 10 states. [2020-10-15 03:45:45,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:45,493 INFO L93 Difference]: Finished difference Result 208814 states and 274296 transitions. [2020-10-15 03:45:45,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:45:45,493 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-15 03:45:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:45,695 INFO L225 Difference]: With dead ends: 208814 [2020-10-15 03:45:45,695 INFO L226 Difference]: Without dead ends: 167339 [2020-10-15 03:45:45,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:45:45,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167339 states. [2020-10-15 03:46:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167339 to 81380. [2020-10-15 03:46:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81380 states. [2020-10-15 03:46:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81380 states to 81380 states and 107441 transitions. [2020-10-15 03:46:00,916 INFO L78 Accepts]: Start accepts. Automaton has 81380 states and 107441 transitions. Word has length 73 [2020-10-15 03:46:00,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:00,916 INFO L479 AbstractCegarLoop]: Abstraction has 81380 states and 107441 transitions. [2020-10-15 03:46:00,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:46:00,916 INFO L276 IsEmpty]: Start isEmpty. Operand 81380 states and 107441 transitions. [2020-10-15 03:46:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:46:00,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:00,922 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] [2020-10-15 03:46:00,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:46:00,922 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:00,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:00,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1438205339, now seen corresponding path program 1 times [2020-10-15 03:46:00,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:00,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968409908] [2020-10-15 03:46:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:00,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:00,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:01,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:04,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:05,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:05,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:46:05,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:46:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:46:05,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:05,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:46:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:46:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:46:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:06,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:06,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:06,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:46:06,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:06,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:46:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:46:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:46:06,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968409908] [2020-10-15 03:46:06,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:46:06,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:46:06,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083437029] [2020-10-15 03:46:06,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:46:06,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:06,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:46:06,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:46:06,148 INFO L87 Difference]: Start difference. First operand 81380 states and 107441 transitions. Second operand 9 states. [2020-10-15 03:46:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:31,446 INFO L93 Difference]: Finished difference Result 188676 states and 247836 transitions. [2020-10-15 03:46:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:46:31,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-15 03:46:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:31,657 INFO L225 Difference]: With dead ends: 188676 [2020-10-15 03:46:31,658 INFO L226 Difference]: Without dead ends: 156683 [2020-10-15 03:46:31,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:46:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156683 states.