/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_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:02:37,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:02:37,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:02:37,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:02:37,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:02:37,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:02:37,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:02:37,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:02:37,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:02:37,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:02:37,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:02:37,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:02:37,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:02:37,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:02:37,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:02:37,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:02:37,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:02:37,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:02:37,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:02:37,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:02:37,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:02:37,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:02:37,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:02:37,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:02:37,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:02:37,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:02:37,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:02:37,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:02:37,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:02:37,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:02:37,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:02:37,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:02:37,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:02:37,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:02:37,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:02:37,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:02:37,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:02:37,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:02:37,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:02:37,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:02:37,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:02:37,182 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 14:02:37,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:02:37,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:02:37,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:02:37,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:02:37,229 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:02:37,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:02:37,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:02:37,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:02:37,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:02:37,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:02:37,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:02:37,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:02:37,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:02:37,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:02:37,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:02:37,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:02:37,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:02:37,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:02:37,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:02:37,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:02:37,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:02:37,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:02:37,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:02:37,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:02:37,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:02:37,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:02:37,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:02:37,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:02:37,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:02:37,235 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 14:02:37,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:02:37,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:02:37,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:02:37,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:02:37,612 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:02:37,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 14:02:37,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73a7dbf7d/805c431e8a2b4823869fbb5c11bfe1d6/FLAG7bcda1082 [2020-10-13 14:02:38,205 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:02:38,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 14:02:38,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73a7dbf7d/805c431e8a2b4823869fbb5c11bfe1d6/FLAG7bcda1082 [2020-10-13 14:02:38,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73a7dbf7d/805c431e8a2b4823869fbb5c11bfe1d6 [2020-10-13 14:02:38,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:02:38,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:02:38,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:38,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:02:38,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:02:38,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b30b002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38, skipping insertion in model container [2020-10-13 14:02:38,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:02:38,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:02:39,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:39,219 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:02:39,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:39,368 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:02:39,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39 WrapperNode [2020-10-13 14:02:39,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:39,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:02:39,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:02:39,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:02:39,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39" (1/1) ... [2020-10-13 14:02:39,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39" (1/1) ... [2020-10-13 14:02:39,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39" (1/1) ... [2020-10-13 14:02:39,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39" (1/1) ... [2020-10-13 14:02:39,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39" (1/1) ... [2020-10-13 14:02:39,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39" (1/1) ... [2020-10-13 14:02:39,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39" (1/1) ... [2020-10-13 14:02:39,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:02:39,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:02:39,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:02:39,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:02:39,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39" (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 14:02:39,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:02:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:02:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:02:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:02:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:02:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:02:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:02:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:02:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:02:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:02:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:02:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:02:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:02:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:02:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:02:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:02:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:02:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:02:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:02:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:02:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:02:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:02:40,850 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:02:40,850 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:02:40,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:40 BoogieIcfgContainer [2020-10-13 14:02:40,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:02:40,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:02:40,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:02:40,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:02:40,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:02:38" (1/3) ... [2020-10-13 14:02:40,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd9a311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:40, skipping insertion in model container [2020-10-13 14:02:40,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:39" (2/3) ... [2020-10-13 14:02:40,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd9a311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:40, skipping insertion in model container [2020-10-13 14:02:40,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:40" (3/3) ... [2020-10-13 14:02:40,866 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 14:02:40,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:02:40,891 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:02:40,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:02:40,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:02:40,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:02:40,933 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:02:40,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:02:40,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:02:40,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:02:40,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:02:40,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:02:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-13 14:02:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 14:02:40,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:40,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:40,977 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:40,983 INFO L82 PathProgramCache]: Analyzing trace with hash -425912833, now seen corresponding path program 1 times [2020-10-13 14:02:40,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:40,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390494164] [2020-10-13 14:02:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:41,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:41,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:42,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:42,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:46,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 14:02:46,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:02:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:02:46,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:02:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 14:02:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:02:46,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:02:47,078 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:02:47,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:47,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:47,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:47,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:47,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:47,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:02:47,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:47,160 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 14:02:47,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390494164] [2020-10-13 14:02:47,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:47,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:02:47,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356475264] [2020-10-13 14:02:47,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:02:47,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:47,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:02:47,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:02:47,189 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 7 states. [2020-10-13 14:02:47,925 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-13 14:02:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:50,571 INFO L93 Difference]: Finished difference Result 1423 states and 2426 transitions. [2020-10-13 14:02:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:02:50,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-13 14:02:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:50,601 INFO L225 Difference]: With dead ends: 1423 [2020-10-13 14:02:50,601 INFO L226 Difference]: Without dead ends: 1265 [2020-10-13 14:02:50,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:02:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-13 14:02:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 459. [2020-10-13 14:02:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-13 14:02:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 764 transitions. [2020-10-13 14:02:50,718 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 764 transitions. Word has length 114 [2020-10-13 14:02:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:50,719 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 764 transitions. [2020-10-13 14:02:50,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:02:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 764 transitions. [2020-10-13 14:02:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 14:02:50,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:50,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:50,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:02:50,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:50,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:50,726 INFO L82 PathProgramCache]: Analyzing trace with hash -384564213, now seen corresponding path program 1 times [2020-10-13 14:02:50,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:50,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550070193] [2020-10-13 14:02:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:52,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:55,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:55,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 14:02:55,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:02:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 14:02:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:02:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 14:02:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:02:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:02:56,484 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:02:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:56,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:56,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:56,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:02:56,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:02:56,574 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 14:02:56,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550070193] [2020-10-13 14:02:56,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:56,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:02:56,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725021074] [2020-10-13 14:02:56,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:02:56,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:02:56,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:02:56,581 INFO L87 Difference]: Start difference. First operand 459 states and 764 transitions. Second operand 8 states. [2020-10-13 14:02:57,139 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-13 14:03:00,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:00,216 INFO L93 Difference]: Finished difference Result 3271 states and 5501 transitions. [2020-10-13 14:03:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:03:00,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-13 14:03:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:00,235 INFO L225 Difference]: With dead ends: 3271 [2020-10-13 14:03:00,235 INFO L226 Difference]: Without dead ends: 3005 [2020-10-13 14:03:00,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:03:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-10-13 14:03:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1179. [2020-10-13 14:03:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-10-13 14:03:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1979 transitions. [2020-10-13 14:03:00,364 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1979 transitions. Word has length 115 [2020-10-13 14:03:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:00,365 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1979 transitions. [2020-10-13 14:03:00,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:03:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1979 transitions. [2020-10-13 14:03:00,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 14:03:00,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:00,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:00,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:03:00,372 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:00,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:00,372 INFO L82 PathProgramCache]: Analyzing trace with hash 901801030, now seen corresponding path program 1 times [2020-10-13 14:03:00,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:00,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915941382] [2020-10-13 14:03:00,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:05,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:05,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 14:03:05,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:03:05,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:03:05,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 14:03:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:03:05,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:05,905 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:03:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:05,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:05,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:05,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:03:05,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:05,966 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 14:03:05,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915941382] [2020-10-13 14:03:05,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:05,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:05,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354636684] [2020-10-13 14:03:05,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:05,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:05,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:05,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:05,970 INFO L87 Difference]: Start difference. First operand 1179 states and 1979 transitions. Second operand 5 states. [2020-10-13 14:03:06,438 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:03:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:08,493 INFO L93 Difference]: Finished difference Result 3887 states and 6550 transitions. [2020-10-13 14:03:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:03:08,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 14:03:08,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:08,515 INFO L225 Difference]: With dead ends: 3887 [2020-10-13 14:03:08,516 INFO L226 Difference]: Without dead ends: 2998 [2020-10-13 14:03:08,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:03:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-10-13 14:03:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2100. [2020-10-13 14:03:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-10-13 14:03:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 3531 transitions. [2020-10-13 14:03:08,697 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 3531 transitions. Word has length 116 [2020-10-13 14:03:08,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:08,698 INFO L479 AbstractCegarLoop]: Abstraction has 2100 states and 3531 transitions. [2020-10-13 14:03:08,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:08,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 3531 transitions. [2020-10-13 14:03:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 14:03:08,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:08,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:08,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:03:08,703 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:08,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2128975922, now seen corresponding path program 1 times [2020-10-13 14:03:08,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:08,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645946930] [2020-10-13 14:03:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:13,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:13,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 14:03:13,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:03:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:03:13,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 14:03:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:03:13,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:03:14,240 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:03:14,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:14,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:14,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:14,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:14,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:03:14,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:14,290 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 14:03:14,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645946930] [2020-10-13 14:03:14,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:14,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:14,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033468016] [2020-10-13 14:03:14,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:14,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:14,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:14,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:14,294 INFO L87 Difference]: Start difference. First operand 2100 states and 3531 transitions. Second operand 5 states. [2020-10-13 14:03:14,696 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:03:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:16,637 INFO L93 Difference]: Finished difference Result 7431 states and 12518 transitions. [2020-10-13 14:03:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:03:16,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 14:03:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:16,667 INFO L225 Difference]: With dead ends: 7431 [2020-10-13 14:03:16,667 INFO L226 Difference]: Without dead ends: 5662 [2020-10-13 14:03:16,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:03:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2020-10-13 14:03:16,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 3877. [2020-10-13 14:03:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3877 states. [2020-10-13 14:03:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 6519 transitions. [2020-10-13 14:03:16,991 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 6519 transitions. Word has length 117 [2020-10-13 14:03:16,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:16,992 INFO L479 AbstractCegarLoop]: Abstraction has 3877 states and 6519 transitions. [2020-10-13 14:03:16,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 6519 transitions. [2020-10-13 14:03:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:03:16,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:16,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:16,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:03:16,998 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:16,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249933, now seen corresponding path program 1 times [2020-10-13 14:03:16,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:16,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686702007] [2020-10-13 14:03:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:17,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:17,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:17,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:22,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:03:22,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:03:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:22,677 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:03:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:22,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:22,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:22,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:22,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:03:22,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:22,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:22,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:22,760 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 14:03:22,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686702007] [2020-10-13 14:03:22,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:22,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:22,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416319840] [2020-10-13 14:03:22,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:22,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:22,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:22,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:22,764 INFO L87 Difference]: Start difference. First operand 3877 states and 6519 transitions. Second operand 5 states. [2020-10-13 14:03:23,427 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:03:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:25,510 INFO L93 Difference]: Finished difference Result 14443 states and 24294 transitions. [2020-10-13 14:03:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:03:25,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 14:03:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:25,570 INFO L225 Difference]: With dead ends: 14443 [2020-10-13 14:03:25,571 INFO L226 Difference]: Without dead ends: 10921 [2020-10-13 14:03:25,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:03:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10921 states. [2020-10-13 14:03:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10921 to 7369. [2020-10-13 14:03:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7369 states. [2020-10-13 14:03:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 12371 transitions. [2020-10-13 14:03:26,114 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 12371 transitions. Word has length 118 [2020-10-13 14:03:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:26,115 INFO L479 AbstractCegarLoop]: Abstraction has 7369 states and 12371 transitions. [2020-10-13 14:03:26,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 12371 transitions. [2020-10-13 14:03:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:03:26,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:26,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:26,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:03:26,118 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:26,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:26,119 INFO L82 PathProgramCache]: Analyzing trace with hash -686071726, now seen corresponding path program 1 times [2020-10-13 14:03:26,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:26,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786338911] [2020-10-13 14:03:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:31,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:03:31,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:03:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:03:31,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 14:03:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 14:03:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:31,642 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:03:31,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 14:03:31,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:31,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:31,750 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 14:03:31,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786338911] [2020-10-13 14:03:31,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:31,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:31,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841130130] [2020-10-13 14:03:31,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:31,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:31,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:31,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:31,755 INFO L87 Difference]: Start difference. First operand 7369 states and 12371 transitions. Second operand 4 states. [2020-10-13 14:03:32,179 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:03:34,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:34,941 INFO L93 Difference]: Finished difference Result 19987 states and 33575 transitions. [2020-10-13 14:03:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:34,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 14:03:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:34,977 INFO L225 Difference]: With dead ends: 19987 [2020-10-13 14:03:34,977 INFO L226 Difference]: Without dead ends: 12829 [2020-10-13 14:03:34,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12829 states. [2020-10-13 14:03:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12829 to 12827. [2020-10-13 14:03:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12827 states. [2020-10-13 14:03:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 21488 transitions. [2020-10-13 14:03:35,845 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 21488 transitions. Word has length 120 [2020-10-13 14:03:35,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:35,845 INFO L479 AbstractCegarLoop]: Abstraction has 12827 states and 21488 transitions. [2020-10-13 14:03:35,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 21488 transitions. [2020-10-13 14:03:35,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:03:35,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:35,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:35,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:03:35,848 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:35,849 INFO L82 PathProgramCache]: Analyzing trace with hash 140817538, now seen corresponding path program 1 times [2020-10-13 14:03:35,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:35,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647259803] [2020-10-13 14:03:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:36,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:36,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:36,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:40,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:40,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:40,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:03:40,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:03:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:03:40,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 14:03:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 14:03:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:41,354 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:03:41,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:41,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:41,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:41,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:03:41,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:41,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:41,406 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 14:03:41,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647259803] [2020-10-13 14:03:41,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:41,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:41,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801676257] [2020-10-13 14:03:41,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:41,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:41,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:41,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:41,409 INFO L87 Difference]: Start difference. First operand 12827 states and 21488 transitions. Second operand 5 states. [2020-10-13 14:03:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:45,100 INFO L93 Difference]: Finished difference Result 36233 states and 60748 transitions. [2020-10-13 14:03:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:45,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 14:03:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:45,164 INFO L225 Difference]: With dead ends: 36233 [2020-10-13 14:03:45,164 INFO L226 Difference]: Without dead ends: 23725 [2020-10-13 14:03:45,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23725 states. [2020-10-13 14:03:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23725 to 23499. [2020-10-13 14:03:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23499 states. [2020-10-13 14:03:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23499 states to 23499 states and 39224 transitions. [2020-10-13 14:03:46,522 INFO L78 Accepts]: Start accepts. Automaton has 23499 states and 39224 transitions. Word has length 120 [2020-10-13 14:03:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:46,522 INFO L479 AbstractCegarLoop]: Abstraction has 23499 states and 39224 transitions. [2020-10-13 14:03:46,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 23499 states and 39224 transitions. [2020-10-13 14:03:46,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:03:46,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:46,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:46,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:03:46,525 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:46,526 INFO L82 PathProgramCache]: Analyzing trace with hash 845757991, now seen corresponding path program 1 times [2020-10-13 14:03:46,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:46,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354840591] [2020-10-13 14:03:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:46,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:46,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:51,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:51,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:03:51,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:03:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:03:51,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 14:03:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 14:03:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:51,986 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:03:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:52,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:52,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:52,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:03:52,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:52,029 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 14:03:52,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354840591] [2020-10-13 14:03:52,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:52,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:52,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416294411] [2020-10-13 14:03:52,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:52,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:52,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:52,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:52,032 INFO L87 Difference]: Start difference. First operand 23499 states and 39224 transitions. Second operand 4 states. [2020-10-13 14:03:52,467 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:03:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:56,257 INFO L93 Difference]: Finished difference Result 65437 states and 109364 transitions. [2020-10-13 14:03:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:56,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 14:03:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:56,352 INFO L225 Difference]: With dead ends: 65437 [2020-10-13 14:03:56,353 INFO L226 Difference]: Without dead ends: 42215 [2020-10-13 14:03:56,391 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 14:03:56,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42215 states. [2020-10-13 14:03:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42215 to 42213. [2020-10-13 14:03:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42213 states. [2020-10-13 14:03:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42213 states to 42213 states and 70362 transitions. [2020-10-13 14:03:58,680 INFO L78 Accepts]: Start accepts. Automaton has 42213 states and 70362 transitions. Word has length 120 [2020-10-13 14:03:58,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:58,681 INFO L479 AbstractCegarLoop]: Abstraction has 42213 states and 70362 transitions. [2020-10-13 14:03:58,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 42213 states and 70362 transitions. [2020-10-13 14:03:58,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:03:58,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:58,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:58,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:03:58,683 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:58,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:58,684 INFO L82 PathProgramCache]: Analyzing trace with hash 286337891, now seen corresponding path program 1 times [2020-10-13 14:03:58,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:58,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094640144] [2020-10-13 14:03:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:58,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:59,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:59,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:00,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:03,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:03,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:04:03,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:04:03,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 14:04:03,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 14:04:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 14:04:03,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:04,192 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:04:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:04,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:04,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:04,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:04,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:04:04,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:04,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:04,226 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 14:04:04,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094640144] [2020-10-13 14:04:04,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:04,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:04,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881501009] [2020-10-13 14:04:04,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:04,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:04,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:04,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:04,228 INFO L87 Difference]: Start difference. First operand 42213 states and 70362 transitions. Second operand 4 states. [2020-10-13 14:04:04,670 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:04:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:10,071 INFO L93 Difference]: Finished difference Result 113721 states and 189500 transitions. [2020-10-13 14:04:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:10,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 14:04:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:10,238 INFO L225 Difference]: With dead ends: 113721 [2020-10-13 14:04:10,239 INFO L226 Difference]: Without dead ends: 71787 [2020-10-13 14:04:10,307 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 14:04:10,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71787 states. [2020-10-13 14:04:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71787 to 71728. [2020-10-13 14:04:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71728 states. [2020-10-13 14:04:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71728 states to 71728 states and 119051 transitions. [2020-10-13 14:04:14,190 INFO L78 Accepts]: Start accepts. Automaton has 71728 states and 119051 transitions. Word has length 120 [2020-10-13 14:04:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:14,190 INFO L479 AbstractCegarLoop]: Abstraction has 71728 states and 119051 transitions. [2020-10-13 14:04:14,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 71728 states and 119051 transitions. [2020-10-13 14:04:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:04:14,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:14,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:14,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:04:14,193 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash 142676029, now seen corresponding path program 1 times [2020-10-13 14:04:14,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:14,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297128267] [2020-10-13 14:04:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:14,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:14,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:14,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:17,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:18,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:18,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:04:18,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:04:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4730 [2020-10-13 14:04:18,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 14:04:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:04:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:19,359 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:04:19,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:19,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:19,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:04:19,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:19,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:19,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:19,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:19,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:19,406 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 14:04:19,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297128267] [2020-10-13 14:04:19,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:19,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:19,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382629660] [2020-10-13 14:04:19,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:19,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:19,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:19,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:19,408 INFO L87 Difference]: Start difference. First operand 71728 states and 119051 transitions. Second operand 4 states. [2020-10-13 14:04:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:26,683 INFO L93 Difference]: Finished difference Result 185920 states and 307267 transitions. [2020-10-13 14:04:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:04:26,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 14:04:26,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:26,888 INFO L225 Difference]: With dead ends: 185920 [2020-10-13 14:04:26,889 INFO L226 Difference]: Without dead ends: 114414 [2020-10-13 14:04:26,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:27,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114414 states. [2020-10-13 14:04:35,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114414 to 113516. [2020-10-13 14:04:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113516 states. [2020-10-13 14:04:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113516 states to 113516 states and 185313 transitions. [2020-10-13 14:04:35,524 INFO L78 Accepts]: Start accepts. Automaton has 113516 states and 185313 transitions. Word has length 120 [2020-10-13 14:04:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:35,524 INFO L479 AbstractCegarLoop]: Abstraction has 113516 states and 185313 transitions. [2020-10-13 14:04:35,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 113516 states and 185313 transitions. [2020-10-13 14:04:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:04:35,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:35,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:35,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:04:35,527 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:35,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1151918923, now seen corresponding path program 1 times [2020-10-13 14:04:35,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:35,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691634648] [2020-10-13 14:04:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:35,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:40,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:40,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:40,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:04:40,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:04:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 14:04:40,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 14:04:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 14:04:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:41,002 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:04:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:41,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:41,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:04:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:41,042 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 14:04:41,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691634648] [2020-10-13 14:04:41,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:41,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:41,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478365845] [2020-10-13 14:04:41,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:41,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:41,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:41,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:41,044 INFO L87 Difference]: Start difference. First operand 113516 states and 185313 transitions. Second operand 4 states. [2020-10-13 14:04:41,621 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:04:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:54,570 INFO L93 Difference]: Finished difference Result 297840 states and 484515 transitions. [2020-10-13 14:04:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:54,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 14:04:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:54,947 INFO L225 Difference]: With dead ends: 297840 [2020-10-13 14:04:54,948 INFO L226 Difference]: Without dead ends: 184538 [2020-10-13 14:04:55,060 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 14:04:55,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184538 states. [2020-10-13 14:05:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184538 to 184515. [2020-10-13 14:05:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184515 states. [2020-10-13 14:05:08,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184515 states to 184515 states and 297978 transitions. [2020-10-13 14:05:08,689 INFO L78 Accepts]: Start accepts. Automaton has 184515 states and 297978 transitions. Word has length 120 [2020-10-13 14:05:08,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:08,689 INFO L479 AbstractCegarLoop]: Abstraction has 184515 states and 297978 transitions. [2020-10-13 14:05:08,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:08,689 INFO L276 IsEmpty]: Start isEmpty. Operand 184515 states and 297978 transitions. [2020-10-13 14:05:08,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 14:05:08,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:08,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:08,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:05:08,691 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:08,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:08,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1113344252, now seen corresponding path program 1 times [2020-10-13 14:05:08,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:08,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925375080] [2020-10-13 14:05:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:08,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:08,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:08,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:09,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:10,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:10,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 14:05:10,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:05:10,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-10-13 14:05:10,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 14:05:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:05:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:10,625 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:05:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:10,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:10,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:10,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:05:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:10,666 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 14:05:10,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925375080] [2020-10-13 14:05:10,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:10,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:10,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722045086] [2020-10-13 14:05:10,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:10,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:10,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:10,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:10,668 INFO L87 Difference]: Start difference. First operand 184515 states and 297978 transitions. Second operand 4 states. [2020-10-13 14:05:11,117 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:05:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:26,583 INFO L93 Difference]: Finished difference Result 402368 states and 650237 transitions. [2020-10-13 14:05:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:26,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-13 14:05:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:26,980 INFO L225 Difference]: With dead ends: 402368 [2020-10-13 14:05:26,980 INFO L226 Difference]: Without dead ends: 218046 [2020-10-13 14:05:27,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218046 states. [2020-10-13 14:05:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218046 to 217580. [2020-10-13 14:05:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217580 states. [2020-10-13 14:05:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217580 states to 217580 states and 349995 transitions. [2020-10-13 14:05:45,081 INFO L78 Accepts]: Start accepts. Automaton has 217580 states and 349995 transitions. Word has length 121 [2020-10-13 14:05:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:45,081 INFO L479 AbstractCegarLoop]: Abstraction has 217580 states and 349995 transitions. [2020-10-13 14:05:45,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 217580 states and 349995 transitions. [2020-10-13 14:05:45,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 14:05:45,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:45,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:45,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:05:45,082 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:45,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:45,083 INFO L82 PathProgramCache]: Analyzing trace with hash 843054503, now seen corresponding path program 1 times [2020-10-13 14:05:45,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:45,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397905355] [2020-10-13 14:05:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:52,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:52,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 14:05:52,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:05:52,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7311 [2020-10-13 14:05:52,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:05:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 14:05:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:05:52,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:52,919 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:05:52,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:52,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:52,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:52,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:52,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:05:52,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:52,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:52,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:52,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:52,979 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 14:05:52,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397905355] [2020-10-13 14:05:52,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:52,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:05:52,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478260203] [2020-10-13 14:05:52,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:05:52,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:52,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:05:52,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:05:52,981 INFO L87 Difference]: Start difference. First operand 217580 states and 349995 transitions. Second operand 7 states. [2020-10-13 14:05:53,503 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 259