/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:29:27,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:29:27,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:29:27,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:29:27,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:29:27,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:29:27,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:29:27,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:29:27,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:29:27,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:29:27,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:29:27,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:29:27,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:29:27,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:29:27,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:29:27,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:29:27,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:29:27,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:29:27,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:29:27,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:29:27,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:29:27,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:29:27,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:29:27,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:29:27,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:29:27,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:29:27,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:29:27,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:29:27,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:29:27,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:29:27,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:29:27,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:29:27,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:29:27,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:29:27,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:29:27,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:29:27,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:29:27,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:29:27,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:29:27,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:29:27,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:29:27,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:29:27,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:29:27,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:29:27,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:29:27,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:29:27,226 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:29:27,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:29:27,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:29:27,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:29:27,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:29:27,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:29:27,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:29:27,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:29:27,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:29:27,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:29:27,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:29:27,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:29:27,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:29:27,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:29:27,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:29:27,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:29:27,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:29:27,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:29:27,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:29:27,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:29:27,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:29:27,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:29:27,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:29:27,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:29:27,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:29:27,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:29:27,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:29:27,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:29:27,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:29:27,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:29:27,538 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:29:27,540 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 14:29:27,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91ffd9fa6/97c3a1b2545846a9ba1b743231aa6999/FLAG289ec450c [2020-10-13 14:29:28,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:29:28,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 14:29:28,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91ffd9fa6/97c3a1b2545846a9ba1b743231aa6999/FLAG289ec450c [2020-10-13 14:29:28,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91ffd9fa6/97c3a1b2545846a9ba1b743231aa6999 [2020-10-13 14:29:28,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:29:28,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:29:28,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:29:28,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:29:28,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:29:28,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:29:28" (1/1) ... [2020-10-13 14:29:28,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5878563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:28, skipping insertion in model container [2020-10-13 14:29:28,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:29:28" (1/1) ... [2020-10-13 14:29:28,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:29:28,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:29:28,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:29:28,856 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:29:29,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:29:29,078 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:29:29,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29 WrapperNode [2020-10-13 14:29:29,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:29:29,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:29:29,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:29:29,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:29:29,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29" (1/1) ... [2020-10-13 14:29:29,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29" (1/1) ... [2020-10-13 14:29:29,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29" (1/1) ... [2020-10-13 14:29:29,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29" (1/1) ... [2020-10-13 14:29:29,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29" (1/1) ... [2020-10-13 14:29:29,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29" (1/1) ... [2020-10-13 14:29:29,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29" (1/1) ... [2020-10-13 14:29:29,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:29:29,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:29:29,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:29:29,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:29:29,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:29:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:29:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:29:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:29:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:29:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:29:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:29:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:29:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:29:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:29:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:29:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:29:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:29:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:29:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:29:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:29:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:29:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:29:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:29:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:29:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-13 14:29:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:29:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:29:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:29:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:29:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:29:29,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:29:29,980 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:29:29,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:29:29 BoogieIcfgContainer [2020-10-13 14:29:29,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:29:29,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:29:29,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:29:29,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:29:29,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:29:28" (1/3) ... [2020-10-13 14:29:29,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6821e661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:29:29, skipping insertion in model container [2020-10-13 14:29:29,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:29" (2/3) ... [2020-10-13 14:29:29,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6821e661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:29:29, skipping insertion in model container [2020-10-13 14:29:29,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:29:29" (3/3) ... [2020-10-13 14:29:29,994 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 14:29:30,005 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:29:30,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:29:30,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:29:30,055 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:29:30,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:29:30,056 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:29:30,056 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:29:30,056 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:29:30,056 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:29:30,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:29:30,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:29:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2020-10-13 14:29:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 14:29:30,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:30,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:30,095 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:30,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1044039479, now seen corresponding path program 1 times [2020-10-13 14:29:30,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:30,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545066122] [2020-10-13 14:29:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:30,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:30,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:31,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:35,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:35,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 14:29:35,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:29:35,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:29:35,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:29:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:29:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:29:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:29:35,971 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:29:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:36,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:36,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:36,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:36,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 14:29:36,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:36,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:29:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:36,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545066122] [2020-10-13 14:29:36,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:36,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:29:36,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429846963] [2020-10-13 14:29:36,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:29:36,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:36,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:29:36,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:29:36,160 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 4 states. [2020-10-13 14:29:36,618 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:29:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:37,890 INFO L93 Difference]: Finished difference Result 307 states and 497 transitions. [2020-10-13 14:29:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:29:37,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-13 14:29:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:37,921 INFO L225 Difference]: With dead ends: 307 [2020-10-13 14:29:37,922 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 14:29:37,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:29:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 14:29:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-10-13 14:29:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-13 14:29:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 302 transitions. [2020-10-13 14:29:38,064 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 302 transitions. Word has length 91 [2020-10-13 14:29:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:38,065 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 302 transitions. [2020-10-13 14:29:38,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:29:38,066 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 302 transitions. [2020-10-13 14:29:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 14:29:38,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:38,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:38,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:29:38,084 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:38,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1951165745, now seen corresponding path program 1 times [2020-10-13 14:29:38,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:38,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192873124] [2020-10-13 14:29:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:43,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:43,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 14:29:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:29:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:29:43,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:29:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 14:29:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:29:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:29:43,566 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:29:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:43,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:43,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:43,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:43,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:43,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:29:43,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:43,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:43,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:43,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192873124] [2020-10-13 14:29:43,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:43,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:29:43,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856122431] [2020-10-13 14:29:43,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:29:43,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:43,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:29:43,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:29:43,634 INFO L87 Difference]: Start difference. First operand 211 states and 302 transitions. Second operand 4 states. [2020-10-13 14:29:43,915 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:29:44,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:44,511 INFO L93 Difference]: Finished difference Result 503 states and 766 transitions. [2020-10-13 14:29:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:29:44,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-13 14:29:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:44,516 INFO L225 Difference]: With dead ends: 503 [2020-10-13 14:29:44,516 INFO L226 Difference]: Without dead ends: 349 [2020-10-13 14:29:44,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:29:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-13 14:29:44,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-10-13 14:29:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-13 14:29:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 518 transitions. [2020-10-13 14:29:44,572 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 518 transitions. Word has length 92 [2020-10-13 14:29:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:44,575 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 518 transitions. [2020-10-13 14:29:44,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:29:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 518 transitions. [2020-10-13 14:29:44,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 14:29:44,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:44,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:44,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:29:44,580 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:44,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash 421426364, now seen corresponding path program 1 times [2020-10-13 14:29:44,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:44,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66307010] [2020-10-13 14:29:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:44,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:44,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:45,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:45,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:49,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:49,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 14:29:49,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:29:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:29:49,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:29:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:29:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:29:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:29:49,955 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:29:49,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:49,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:49,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:49,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:29:49,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:50,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66307010] [2020-10-13 14:29:50,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:50,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:29:50,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784501143] [2020-10-13 14:29:50,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:29:50,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:50,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:29:50,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:29:50,019 INFO L87 Difference]: Start difference. First operand 347 states and 518 transitions. Second operand 4 states. [2020-10-13 14:29:50,283 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:29:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:51,013 INFO L93 Difference]: Finished difference Result 895 states and 1388 transitions. [2020-10-13 14:29:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:29:51,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-10-13 14:29:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:51,018 INFO L225 Difference]: With dead ends: 895 [2020-10-13 14:29:51,018 INFO L226 Difference]: Without dead ends: 605 [2020-10-13 14:29:51,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:29:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-10-13 14:29:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 603. [2020-10-13 14:29:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-13 14:29:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 922 transitions. [2020-10-13 14:29:51,051 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 922 transitions. Word has length 93 [2020-10-13 14:29:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:51,052 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 922 transitions. [2020-10-13 14:29:51,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:29:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 922 transitions. [2020-10-13 14:29:51,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 14:29:51,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:51,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:51,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:29:51,054 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:51,054 INFO L82 PathProgramCache]: Analyzing trace with hash -510688432, now seen corresponding path program 1 times [2020-10-13 14:29:51,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:51,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86836839] [2020-10-13 14:29:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:56,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:56,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 14:29:56,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:29:56,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:29:56,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:29:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:29:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:29:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:56,309 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:29:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:56,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:56,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:56,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:56,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:29:56,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:56,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86836839] [2020-10-13 14:29:56,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:56,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:29:56,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932813019] [2020-10-13 14:29:56,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:29:56,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:56,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:29:56,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:29:56,355 INFO L87 Difference]: Start difference. First operand 603 states and 922 transitions. Second operand 4 states. [2020-10-13 14:29:56,562 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:29:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:57,219 INFO L93 Difference]: Finished difference Result 1631 states and 2548 transitions. [2020-10-13 14:29:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:29:57,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-13 14:29:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:57,230 INFO L225 Difference]: With dead ends: 1631 [2020-10-13 14:29:57,230 INFO L226 Difference]: Without dead ends: 1085 [2020-10-13 14:29:57,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:29:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-10-13 14:29:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1083. [2020-10-13 14:29:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-10-13 14:29:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1674 transitions. [2020-10-13 14:29:57,291 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1674 transitions. Word has length 94 [2020-10-13 14:29:57,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:57,292 INFO L479 AbstractCegarLoop]: Abstraction has 1083 states and 1674 transitions. [2020-10-13 14:29:57,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:29:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1674 transitions. [2020-10-13 14:29:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 14:29:57,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:57,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:57,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:29:57,298 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:57,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:57,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1082554983, now seen corresponding path program 1 times [2020-10-13 14:29:57,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:57,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105897544] [2020-10-13 14:29:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:57,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:02,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:02,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 14:30:02,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:30:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 14:30:02,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:30:02,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:30:02,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:30:02,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:02,631 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:30:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:02,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:02,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:02,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:02,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:30:02,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:30:02,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:02,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105897544] [2020-10-13 14:30:02,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:02,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:30:02,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009431092] [2020-10-13 14:30:02,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:30:02,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:02,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:30:02,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:30:02,701 INFO L87 Difference]: Start difference. First operand 1083 states and 1674 transitions. Second operand 4 states. [2020-10-13 14:30:03,028 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:30:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:04,053 INFO L93 Difference]: Finished difference Result 3007 states and 4700 transitions. [2020-10-13 14:30:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:30:04,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-13 14:30:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:04,068 INFO L225 Difference]: With dead ends: 3007 [2020-10-13 14:30:04,068 INFO L226 Difference]: Without dead ends: 1981 [2020-10-13 14:30:04,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:30:04,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-10-13 14:30:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1979. [2020-10-13 14:30:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2020-10-13 14:30:04,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 3066 transitions. [2020-10-13 14:30:04,177 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 3066 transitions. Word has length 95 [2020-10-13 14:30:04,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:04,177 INFO L479 AbstractCegarLoop]: Abstraction has 1979 states and 3066 transitions. [2020-10-13 14:30:04,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:30:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 3066 transitions. [2020-10-13 14:30:04,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 14:30:04,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:04,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:04,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:30:04,179 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:04,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:04,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1781534238, now seen corresponding path program 1 times [2020-10-13 14:30:04,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:04,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614877293] [2020-10-13 14:30:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:04,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:05,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:09,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:09,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 14:30:09,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:30:09,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:30:09,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:30:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 14:30:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:30:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:09,442 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:30:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:09,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:09,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:09,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:09,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:30:09,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:09,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:09,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614877293] [2020-10-13 14:30:09,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:09,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:30:09,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777952196] [2020-10-13 14:30:09,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:30:09,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:09,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:30:09,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:30:09,494 INFO L87 Difference]: Start difference. First operand 1979 states and 3066 transitions. Second operand 4 states. [2020-10-13 14:30:09,734 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:30:10,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:10,593 INFO L93 Difference]: Finished difference Result 5567 states and 8668 transitions. [2020-10-13 14:30:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:30:10,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-13 14:30:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:10,615 INFO L225 Difference]: With dead ends: 5567 [2020-10-13 14:30:10,615 INFO L226 Difference]: Without dead ends: 3645 [2020-10-13 14:30:10,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:30:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2020-10-13 14:30:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3643. [2020-10-13 14:30:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2020-10-13 14:30:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5626 transitions. [2020-10-13 14:30:10,827 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5626 transitions. Word has length 96 [2020-10-13 14:30:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:10,828 INFO L479 AbstractCegarLoop]: Abstraction has 3643 states and 5626 transitions. [2020-10-13 14:30:10,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:30:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5626 transitions. [2020-10-13 14:30:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:30:10,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:10,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:10,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:30:10,830 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:10,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:10,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1576756346, now seen corresponding path program 1 times [2020-10-13 14:30:10,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:10,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879968979] [2020-10-13 14:30:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:11,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:11,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:11,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:15,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:15,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:30:15,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:30:15,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:30:15,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:30:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:30:15,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:16,135 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:30:16,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:16,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:16,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:16,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:16,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:30:16,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:16,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:16,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879968979] [2020-10-13 14:30:16,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:16,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:16,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058765120] [2020-10-13 14:30:16,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:16,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:16,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:16,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:16,182 INFO L87 Difference]: Start difference. First operand 3643 states and 5626 transitions. Second operand 7 states. [2020-10-13 14:30:16,411 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:30:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:18,566 INFO L93 Difference]: Finished difference Result 32235 states and 49986 transitions. [2020-10-13 14:30:18,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:18,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:30:18,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:18,694 INFO L225 Difference]: With dead ends: 32235 [2020-10-13 14:30:18,694 INFO L226 Difference]: Without dead ends: 28649 [2020-10-13 14:30:18,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:18,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28649 states. [2020-10-13 14:30:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28649 to 10747. [2020-10-13 14:30:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10747 states. [2020-10-13 14:30:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10747 states to 10747 states and 16602 transitions. [2020-10-13 14:30:19,488 INFO L78 Accepts]: Start accepts. Automaton has 10747 states and 16602 transitions. Word has length 97 [2020-10-13 14:30:19,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:19,488 INFO L479 AbstractCegarLoop]: Abstraction has 10747 states and 16602 transitions. [2020-10-13 14:30:19,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 10747 states and 16602 transitions. [2020-10-13 14:30:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:30:19,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:19,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:19,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:30:19,490 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:19,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:19,491 INFO L82 PathProgramCache]: Analyzing trace with hash 112684789, now seen corresponding path program 1 times [2020-10-13 14:30:19,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:19,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289468847] [2020-10-13 14:30:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:19,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:24,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:24,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:30:24,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:30:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:30:24,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:30:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 14:30:24,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:24,738 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:30:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:24,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:24,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:24,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:30:24,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:24,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289468847] [2020-10-13 14:30:24,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:24,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:24,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369850144] [2020-10-13 14:30:24,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:24,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:24,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:24,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:24,779 INFO L87 Difference]: Start difference. First operand 10747 states and 16602 transitions. Second operand 7 states. [2020-10-13 14:30:25,004 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:30:29,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:29,294 INFO L93 Difference]: Finished difference Result 95979 states and 148386 transitions. [2020-10-13 14:30:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:29,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:30:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:29,469 INFO L225 Difference]: With dead ends: 95979 [2020-10-13 14:30:29,469 INFO L226 Difference]: Without dead ends: 85289 [2020-10-13 14:30:29,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85289 states. [2020-10-13 14:30:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85289 to 31931. [2020-10-13 14:30:31,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31931 states. [2020-10-13 14:30:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31931 states to 31931 states and 49210 transitions. [2020-10-13 14:30:31,508 INFO L78 Accepts]: Start accepts. Automaton has 31931 states and 49210 transitions. Word has length 97 [2020-10-13 14:30:31,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:31,509 INFO L479 AbstractCegarLoop]: Abstraction has 31931 states and 49210 transitions. [2020-10-13 14:30:31,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:31,509 INFO L276 IsEmpty]: Start isEmpty. Operand 31931 states and 49210 transitions. [2020-10-13 14:30:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:30:31,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:31,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:31,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:30:31,511 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1729345744, now seen corresponding path program 1 times [2020-10-13 14:30:31,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:31,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435192781] [2020-10-13 14:30:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:31,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:34,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:36,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:36,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:30:36,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:30:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:30:36,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:30:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:30:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:36,760 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:30:36,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:36,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:36,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:36,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:30:36,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:36,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435192781] [2020-10-13 14:30:36,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:36,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:36,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17448787] [2020-10-13 14:30:36,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:36,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:36,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:36,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:36,795 INFO L87 Difference]: Start difference. First operand 31931 states and 49210 transitions. Second operand 7 states. [2020-10-13 14:30:37,024 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:30:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:45,198 INFO L93 Difference]: Finished difference Result 222826 states and 343214 transitions. [2020-10-13 14:30:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:45,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:30:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:45,628 INFO L225 Difference]: With dead ends: 222826 [2020-10-13 14:30:45,628 INFO L226 Difference]: Without dead ends: 201544 [2020-10-13 14:30:45,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:45,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201544 states. [2020-10-13 14:30:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201544 to 63546. [2020-10-13 14:30:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63546 states. [2020-10-13 14:30:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63546 states to 63546 states and 97542 transitions. [2020-10-13 14:30:51,814 INFO L78 Accepts]: Start accepts. Automaton has 63546 states and 97542 transitions. Word has length 97 [2020-10-13 14:30:51,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:51,814 INFO L479 AbstractCegarLoop]: Abstraction has 63546 states and 97542 transitions. [2020-10-13 14:30:51,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:51,814 INFO L276 IsEmpty]: Start isEmpty. Operand 63546 states and 97542 transitions. [2020-10-13 14:30:51,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:30:51,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:51,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:51,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:30:51,816 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:51,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:51,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1062111002, now seen corresponding path program 1 times [2020-10-13 14:30:51,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:51,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926948642] [2020-10-13 14:30:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:51,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:51,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:52,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:56,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:30:56,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:30:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:30:56,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:56,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:30:56,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 14:30:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:57,065 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:30:57,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:57,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:57,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:57,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:30:57,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:57,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:57,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:57,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:57,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926948642] [2020-10-13 14:30:57,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:57,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:57,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654687236] [2020-10-13 14:30:57,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:57,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:57,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:57,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:57,096 INFO L87 Difference]: Start difference. First operand 63546 states and 97542 transitions. Second operand 7 states. [2020-10-13 14:30:57,593 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:31:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:15,669 INFO L93 Difference]: Finished difference Result 368735 states and 565389 transitions. [2020-10-13 14:31:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:15,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:31:15,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:16,212 INFO L225 Difference]: With dead ends: 368735 [2020-10-13 14:31:16,212 INFO L226 Difference]: Without dead ends: 326365 [2020-10-13 14:31:16,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:16,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326365 states. [2020-10-13 14:31:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326365 to 84487. [2020-10-13 14:31:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84487 states. [2020-10-13 14:31:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84487 states to 84487 states and 129053 transitions. [2020-10-13 14:31:22,674 INFO L78 Accepts]: Start accepts. Automaton has 84487 states and 129053 transitions. Word has length 97 [2020-10-13 14:31:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:22,674 INFO L479 AbstractCegarLoop]: Abstraction has 84487 states and 129053 transitions. [2020-10-13 14:31:22,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 84487 states and 129053 transitions. [2020-10-13 14:31:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:31:22,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:22,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:22,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:31:22,676 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:22,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1457111940, now seen corresponding path program 1 times [2020-10-13 14:31:22,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:22,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011977829] [2020-10-13 14:31:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:23,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:23,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:31:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:31:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:31:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:31:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:31:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:31:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:27,940 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:31:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:27,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:27,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:27,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:31:27,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:31:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:31:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:27,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011977829] [2020-10-13 14:31:27,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:27,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:31:27,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767494131] [2020-10-13 14:31:27,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:31:27,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:27,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:31:27,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:31:27,980 INFO L87 Difference]: Start difference. First operand 84487 states and 129053 transitions. Second operand 6 states. [2020-10-13 14:31:28,196 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-13 14:31:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:37,150 INFO L93 Difference]: Finished difference Result 196131 states and 299071 transitions. [2020-10-13 14:31:37,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:31:37,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-13 14:31:37,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:37,324 INFO L225 Difference]: With dead ends: 196131 [2020-10-13 14:31:37,324 INFO L226 Difference]: Without dead ends: 139786 [2020-10-13 14:31:37,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:31:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139786 states. [2020-10-13 14:31:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139786 to 111752. [2020-10-13 14:31:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111752 states. [2020-10-13 14:31:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111752 states to 111752 states and 169119 transitions. [2020-10-13 14:31:45,555 INFO L78 Accepts]: Start accepts. Automaton has 111752 states and 169119 transitions. Word has length 97 [2020-10-13 14:31:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:45,555 INFO L479 AbstractCegarLoop]: Abstraction has 111752 states and 169119 transitions. [2020-10-13 14:31:45,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:31:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 111752 states and 169119 transitions. [2020-10-13 14:31:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:31:45,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:45,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:45,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:31:45,558 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:45,558 INFO L82 PathProgramCache]: Analyzing trace with hash -193947819, now seen corresponding path program 1 times [2020-10-13 14:31:45,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:45,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596179059] [2020-10-13 14:31:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:45,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:45,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:45,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:31:50,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:31:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4613 [2020-10-13 14:31:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:31:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:31:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:50,416 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:31:50,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:50,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:50,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:50,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:50,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:31:50,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:50,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:50,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596179059] [2020-10-13 14:31:50,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:50,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:50,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478012670] [2020-10-13 14:31:50,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:50,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:50,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:50,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:50,446 INFO L87 Difference]: Start difference. First operand 111752 states and 169119 transitions. Second operand 7 states. [2020-10-13 14:31:50,684 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:32:22,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:22,222 INFO L93 Difference]: Finished difference Result 512898 states and 776401 transitions. [2020-10-13 14:32:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:22,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:32:22,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:22,794 INFO L225 Difference]: With dead ends: 512898 [2020-10-13 14:32:22,794 INFO L226 Difference]: Without dead ends: 401280 [2020-10-13 14:32:22,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:23,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401280 states. [2020-10-13 14:32:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401280 to 111730. [2020-10-13 14:32:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111730 states. [2020-10-13 14:32:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111730 states to 111730 states and 169093 transitions. [2020-10-13 14:32:33,067 INFO L78 Accepts]: Start accepts. Automaton has 111730 states and 169093 transitions. Word has length 97 [2020-10-13 14:32:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:33,068 INFO L479 AbstractCegarLoop]: Abstraction has 111730 states and 169093 transitions. [2020-10-13 14:32:33,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 111730 states and 169093 transitions. [2020-10-13 14:32:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:32:33,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:33,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:32:33,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:32:33,071 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:33,071 INFO L82 PathProgramCache]: Analyzing trace with hash 201053119, now seen corresponding path program 1 times [2020-10-13 14:32:33,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:33,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685005973] [2020-10-13 14:32:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:33,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4339 [2020-10-13 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:32:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 14:32:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:37,652 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:32:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:37,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:37,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:37,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:32:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:37,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:37,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685005973] [2020-10-13 14:32:37,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:37,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:37,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644454818] [2020-10-13 14:32:37,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:37,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:37,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:37,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:37,681 INFO L87 Difference]: Start difference. First operand 111730 states and 169093 transitions. Second operand 7 states. [2020-10-13 14:32:37,902 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 173