/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/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:41:14,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:41:14,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:41:14,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:41:14,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:41:14,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:41:14,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:41:14,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:41:14,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:41:14,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:41:14,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:41:14,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:41:14,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:41:14,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:41:14,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:41:14,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:41:14,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:41:14,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:41:14,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:41:14,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:41:14,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:41:14,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:41:14,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:41:14,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:41:14,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:41:14,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:41:14,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:41:14,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:41:14,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:41:14,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:41:14,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:41:14,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:41:14,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:41:14,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:41:14,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:41:14,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:41:14,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:41:14,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:41:14,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:41:14,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:41:14,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:41:14,194 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 13:41:14,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:41:14,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:41:14,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:41:14,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:41:14,217 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:41:14,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:41:14,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:41:14,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:41:14,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:41:14,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:41:14,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:41:14,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:41:14,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:41:14,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:41:14,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:41:14,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:41:14,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:41:14,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:41:14,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:41:14,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:41:14,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:41:14,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:41:14,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:41:14,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:41:14,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:41:14,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:41:14,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:41:14,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:41:14,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:41:14,222 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 13:41:14,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:41:14,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:41:14,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:41:14,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:41:14,532 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:41:14,533 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-13 13:41:14,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/813ae7bdb/5375627f2f8f43f6abc8b762771a6868/FLAG218a8b847 [2020-10-13 13:41:15,194 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:41:15,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-13 13:41:15,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/813ae7bdb/5375627f2f8f43f6abc8b762771a6868/FLAG218a8b847 [2020-10-13 13:41:15,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/813ae7bdb/5375627f2f8f43f6abc8b762771a6868 [2020-10-13 13:41:15,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:41:15,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:41:15,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:41:15,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:41:15,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:41:15,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:41:15" (1/1) ... [2020-10-13 13:41:15,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33fb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:15, skipping insertion in model container [2020-10-13 13:41:15,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:41:15" (1/1) ... [2020-10-13 13:41:15,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:41:15,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:41:16,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:41:16,095 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:41:16,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:41:16,255 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:41:16,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16 WrapperNode [2020-10-13 13:41:16,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:41:16,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:41:16,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:41:16,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:41:16,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16" (1/1) ... [2020-10-13 13:41:16,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16" (1/1) ... [2020-10-13 13:41:16,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16" (1/1) ... [2020-10-13 13:41:16,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16" (1/1) ... [2020-10-13 13:41:16,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16" (1/1) ... [2020-10-13 13:41:16,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16" (1/1) ... [2020-10-13 13:41:16,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16" (1/1) ... [2020-10-13 13:41:16,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:41:16,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:41:16,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:41:16,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:41:16,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16" (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 13:41:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:41:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:41:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:41:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:41:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:41:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:41:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-13 13:41:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-13 13:41:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:41:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:41:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:41:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:41:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:41:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:41:16,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:41:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:41:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:41:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:41:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:41:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:41:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:41:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:41:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:41:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:41:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 13:41:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:41:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:41:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:41:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:41:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:41:18,929 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:41:18,930 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:41:18,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:41:18 BoogieIcfgContainer [2020-10-13 13:41:18,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:41:18,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:41:18,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:41:18,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:41:18,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:41:15" (1/3) ... [2020-10-13 13:41:18,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6462a723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:41:18, skipping insertion in model container [2020-10-13 13:41:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:41:16" (2/3) ... [2020-10-13 13:41:18,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6462a723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:41:18, skipping insertion in model container [2020-10-13 13:41:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:41:18" (3/3) ... [2020-10-13 13:41:18,949 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-13 13:41:18,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:41:18,967 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:41:18,981 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:41:19,010 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:41:19,010 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:41:19,010 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:41:19,011 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:41:19,011 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:41:19,011 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:41:19,011 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:41:19,011 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:41:19,043 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states. [2020-10-13 13:41:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 13:41:19,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:41:19,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:19,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:41:19,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:41:19,083 INFO L82 PathProgramCache]: Analyzing trace with hash 634524836, now seen corresponding path program 1 times [2020-10-13 13:41:19,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:41:19,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434909060] [2020-10-13 13:41:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:41:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:19,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:20,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:20,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 13:41:20,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-13 13:41:20,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:20,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:20,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 13:41:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:20,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:41:21,676 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:41:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:41:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:21,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:21,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:41:21,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:21,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:41:21,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:21,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:41:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:21,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:21,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 13:41:21,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:21,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 13:41:21,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:21,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:41:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:22,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:22,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:41:22,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:22,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:41:22,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:41:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:22,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:22,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 13:41:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:22,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:22,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:22,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:41:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:22,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:41:22,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 13:41:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:22,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:22,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:22,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:22,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:41:22,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:41:22,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 13:41:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:22,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:22,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:41:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:41:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 13:41:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:22,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:22,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:22,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:22,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:41:22,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:22,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 13:41:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:22,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:22,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:22,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:22,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:41:22,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:22,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-13 13:41:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:22,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:22,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:41:22,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:22,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:41:22,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:41:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:22,546 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 13:41:22,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434909060] [2020-10-13 13:41:22,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:41:22,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:41:22,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599557422] [2020-10-13 13:41:22,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:41:22,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:41:22,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:41:22,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:41:22,578 INFO L87 Difference]: Start difference. First operand 753 states. Second operand 8 states. [2020-10-13 13:41:25,394 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:26,036 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:26,806 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:27,532 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:28,143 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:28,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:41:28,808 INFO L93 Difference]: Finished difference Result 1031 states and 1815 transitions. [2020-10-13 13:41:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:41:28,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-13 13:41:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:41:28,843 INFO L225 Difference]: With dead ends: 1031 [2020-10-13 13:41:28,844 INFO L226 Difference]: Without dead ends: 813 [2020-10-13 13:41:28,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:41:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-10-13 13:41:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 748. [2020-10-13 13:41:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-10-13 13:41:29,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1347 transitions. [2020-10-13 13:41:29,056 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1347 transitions. Word has length 187 [2020-10-13 13:41:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:41:29,058 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 1347 transitions. [2020-10-13 13:41:29,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:41:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1347 transitions. [2020-10-13 13:41:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 13:41:29,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:41:29,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:29,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:41:29,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:41:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:41:29,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2122102430, now seen corresponding path program 1 times [2020-10-13 13:41:29,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:41:29,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877383039] [2020-10-13 13:41:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:41:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:29,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:31,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:31,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 13:41:31,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:31,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2647 [2020-10-13 13:41:31,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:41:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 13:41:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:41:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:32,877 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:41:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:41:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:32,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:32,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:32,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:41:32,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:41:32,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:32,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:32,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:41:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:33,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:33,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 13:41:33,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-13 13:41:33,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:41:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 13:41:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:41:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:33,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:33,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:41:33,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:41:33,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:41:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:41:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:41:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 13:41:33,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 13:41:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:33,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:33,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:33,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:41:33,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:33,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:33,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 13:41:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:33,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:33,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:33,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:33,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:41:33,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:33,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:33,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:33,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 13:41:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:33,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:33,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:33,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:41:33,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:41:33,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 13:41:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:33,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:33,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:33,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:41:33,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 13:41:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:34,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:34,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:34,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:41:34,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:34,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-13 13:41:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:34,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:34,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:34,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:41:34,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:34,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:41:34,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:41:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:34,157 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 13:41:34,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877383039] [2020-10-13 13:41:34,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:41:34,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:41:34,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021117270] [2020-10-13 13:41:34,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:41:34,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:41:34,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:41:34,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:41:34,161 INFO L87 Difference]: Start difference. First operand 748 states and 1347 transitions. Second operand 14 states. [2020-10-13 13:41:42,204 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:41:42,991 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-13 13:41:43,871 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2020-10-13 13:41:44,607 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 13:41:45,565 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:46,337 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:47,257 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:48,190 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:49,061 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:41:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:41:50,541 INFO L93 Difference]: Finished difference Result 1035 states and 1821 transitions. [2020-10-13 13:41:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:41:50,542 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 187 [2020-10-13 13:41:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:41:50,550 INFO L225 Difference]: With dead ends: 1035 [2020-10-13 13:41:50,550 INFO L226 Difference]: Without dead ends: 824 [2020-10-13 13:41:50,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:41:50,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-10-13 13:41:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 748. [2020-10-13 13:41:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-10-13 13:41:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1302 transitions. [2020-10-13 13:41:50,674 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1302 transitions. Word has length 187 [2020-10-13 13:41:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:41:50,675 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 1302 transitions. [2020-10-13 13:41:50,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:41:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1302 transitions. [2020-10-13 13:41:50,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-13 13:41:50,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:41:50,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:50,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:41:50,680 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:41:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:41:50,681 INFO L82 PathProgramCache]: Analyzing trace with hash 860163226, now seen corresponding path program 1 times [2020-10-13 13:41:50,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:41:50,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800624162] [2020-10-13 13:41:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:41:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:51,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:55,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:55,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 13:41:55,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:41:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 13:41:55,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:55,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:41:55,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 13:41:55,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 13:41:55,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:41:56,592 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:41:56,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:41:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:56,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:41:56,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:41:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:41:56,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:41:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:57,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:57,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:41:57,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-13 13:41:57,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:41:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 13:41:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:57,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 13:41:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:57,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:57,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:57,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:41:57,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:41:57,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:41:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:41:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 13:41:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:57,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:57,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:57,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:41:57,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:41:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:41:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:41:57,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:57,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-13 13:41:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:57,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:57,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:57,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:57,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:41:57,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-13 13:41:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:57,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:57,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:57,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:41:57,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-13 13:41:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:57,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:57,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:57,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:57,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:41:57,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:57,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:57,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:57,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:57,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-13 13:41:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:57,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:57,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:57,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:57,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:41:57,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:57,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:57,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:57,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:57,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:57,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 13:41:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:57,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:57,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:41:57,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:41:57,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:41:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:57,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:57,609 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 13:41:57,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800624162] [2020-10-13 13:41:57,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:41:57,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:41:57,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465986820] [2020-10-13 13:41:57,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:41:57,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:41:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:41:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:41:57,613 INFO L87 Difference]: Start difference. First operand 748 states and 1302 transitions. Second operand 11 states. [2020-10-13 13:41:58,286 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:42:04,177 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:04,667 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:42:05,178 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:05,398 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:06,216 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:06,488 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:07,475 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:07,720 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:08,748 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:09,006 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:10,791 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:42:11,409 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:42:11,799 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:42:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:42:11,847 INFO L93 Difference]: Finished difference Result 1285 states and 2192 transitions. [2020-10-13 13:42:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:42:11,847 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 231 [2020-10-13 13:42:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:42:11,858 INFO L225 Difference]: With dead ends: 1285 [2020-10-13 13:42:11,858 INFO L226 Difference]: Without dead ends: 1080 [2020-10-13 13:42:11,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:42:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2020-10-13 13:42:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 942. [2020-10-13 13:42:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-10-13 13:42:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1615 transitions. [2020-10-13 13:42:12,015 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1615 transitions. Word has length 231 [2020-10-13 13:42:12,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:42:12,017 INFO L479 AbstractCegarLoop]: Abstraction has 942 states and 1615 transitions. [2020-10-13 13:42:12,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:42:12,017 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1615 transitions. [2020-10-13 13:42:12,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-13 13:42:12,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:42:12,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:12,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:42:12,024 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:42:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:42:12,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1948079810, now seen corresponding path program 1 times [2020-10-13 13:42:12,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:42:12,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55018408] [2020-10-13 13:42:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:42:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:13,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:17,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:17,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-13 13:42:17,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:42:17,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 13:42:17,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:42:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 13:42:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:42:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:18,193 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:42:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:42:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:18,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:18,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:42:18,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:42:18,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:42:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:42:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:18,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:18,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:18,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:42:18,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:18,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-13 13:42:18,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:18,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:42:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 13:42:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:42:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 13:42:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:18,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:18,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:42:18,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:42:18,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:18,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:42:18,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:18,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:42:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:42:18,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 13:42:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:18,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:18,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:42:18,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:42:18,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:42:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:42:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:42:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-13 13:42:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:18,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:18,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:18,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:18,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:18,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:42:18,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:42:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:42:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:42:18,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:19,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-13 13:42:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:19,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:19,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:19,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:42:19,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:19,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 13:42:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:19,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:19,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:42:19,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:19,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-13 13:42:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:19,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:19,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:19,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:42:19,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-13 13:42:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:19,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:19,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:42:19,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:42:19,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:42:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:19,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:19,262 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 13:42:19,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55018408] [2020-10-13 13:42:19,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:42:19,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:42:19,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104503366] [2020-10-13 13:42:19,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:42:19,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:42:19,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:42:19,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:42:19,265 INFO L87 Difference]: Start difference. First operand 942 states and 1615 transitions. Second operand 11 states. [2020-10-13 13:42:19,916 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:42:25,602 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:26,260 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:26,705 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:42:27,088 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:27,282 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:28,009 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:28,249 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:29,014 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:29,281 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:30,670 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:31,607 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:42:31,842 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:42:32,172 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:42:32,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:42:32,217 INFO L93 Difference]: Finished difference Result 1986 states and 3329 transitions. [2020-10-13 13:42:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:42:32,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 235 [2020-10-13 13:42:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:42:32,232 INFO L225 Difference]: With dead ends: 1986 [2020-10-13 13:42:32,232 INFO L226 Difference]: Without dead ends: 1587 [2020-10-13 13:42:32,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:42:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-10-13 13:42:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1319. [2020-10-13 13:42:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-13 13:42:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2226 transitions. [2020-10-13 13:42:32,396 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2226 transitions. Word has length 235 [2020-10-13 13:42:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:42:32,397 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 2226 transitions. [2020-10-13 13:42:32,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:42:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2226 transitions. [2020-10-13 13:42:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-13 13:42:32,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:42:32,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:32,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:42:32,403 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:42:32,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:42:32,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1508655142, now seen corresponding path program 1 times [2020-10-13 13:42:32,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:42:32,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263770384] [2020-10-13 13:42:32,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:42:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:32,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:33,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:37,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:37,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 13:42:37,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:42:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 13:42:37,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:42:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-13 13:42:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 13:42:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:38,545 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:42:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:42:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:38,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:38,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:42:38,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:42:38,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:42:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:42:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:38,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:38,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:42:38,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:38,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-13 13:42:38,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:42:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:38,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-13 13:42:38,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 13:42:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:38,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:38,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:38,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:42:38,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:38,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:42:38,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:42:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:38,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:42:38,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 13:42:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:39,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:39,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:39,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:42:39,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:42:39,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:42:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:42:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-13 13:42:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:39,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:39,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:42:39,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:39,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:42:39,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:42:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:42:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:39,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-13 13:42:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:39,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:39,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:39,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:39,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:42:39,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:42:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:42:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:42:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:39,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-13 13:42:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:39,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:39,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:39,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:42:39,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 13:42:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:39,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:39,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:42:39,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:39,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 13:42:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:39,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:39,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:39,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:42:39,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:42:39,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:42:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:39,373 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 13:42:39,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263770384] [2020-10-13 13:42:39,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:42:39,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:42:39,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765137635] [2020-10-13 13:42:39,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:42:39,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:42:39,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:42:39,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:42:39,376 INFO L87 Difference]: Start difference. First operand 1319 states and 2226 transitions. Second operand 11 states. [2020-10-13 13:42:40,138 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:42:45,935 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:46,661 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:47,390 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:47,858 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:42:48,373 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:48,599 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:49,435 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:42:49,734 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:51,479 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:51,983 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:52,946 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:42:53,201 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:42:53,556 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:42:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:42:53,603 INFO L93 Difference]: Finished difference Result 3363 states and 5572 transitions. [2020-10-13 13:42:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:42:53,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 239 [2020-10-13 13:42:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:42:53,618 INFO L225 Difference]: With dead ends: 3363 [2020-10-13 13:42:53,618 INFO L226 Difference]: Without dead ends: 2587 [2020-10-13 13:42:53,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:42:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2020-10-13 13:42:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2053. [2020-10-13 13:42:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2053 states. [2020-10-13 13:42:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 3408 transitions. [2020-10-13 13:42:53,850 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 3408 transitions. Word has length 239 [2020-10-13 13:42:53,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:42:53,851 INFO L479 AbstractCegarLoop]: Abstraction has 2053 states and 3408 transitions. [2020-10-13 13:42:53,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:42:53,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 3408 transitions. [2020-10-13 13:42:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-13 13:42:53,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:42:53,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:53,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:42:53,858 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:42:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:42:53,859 INFO L82 PathProgramCache]: Analyzing trace with hash -451568638, now seen corresponding path program 1 times [2020-10-13 13:42:53,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:42:53,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679729738] [2020-10-13 13:42:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:42:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:54,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:54,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:55,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:58,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:58,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-13 13:42:58,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:42:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 13:42:58,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:42:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-13 13:42:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 13:42:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:59,737 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:42:59,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:42:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:59,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:59,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:42:59,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:59,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:42:59,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:59,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:59,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:59,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:59,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:59,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:42:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:59,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:59,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:42:59,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 13:42:59,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:42:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 13:42:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:00,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 13:43:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:00,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:00,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:00,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:43:00,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:00,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:43:00,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:00,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:00,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:00,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:43:00,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:00,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 13:43:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:00,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:00,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:00,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:43:00,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:00,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-13 13:43:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:00,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:00,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:00,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:43:00,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:00,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:00,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:00,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-13 13:43:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:00,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:00,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:43:00,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:00,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-13 13:43:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:00,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:43:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-13 13:43:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:00,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:00,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:00,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:00,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:43:00,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:00,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-13 13:43:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:00,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:00,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:43:00,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:43:00,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:43:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:00,461 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 13:43:00,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679729738] [2020-10-13 13:43:00,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:43:00,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:43:00,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500971316] [2020-10-13 13:43:00,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:43:00,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:43:00,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:43:00,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:43:00,463 INFO L87 Difference]: Start difference. First operand 2053 states and 3408 transitions. Second operand 11 states. [2020-10-13 13:43:01,150 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:43:07,150 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:07,856 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:08,575 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:09,299 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:09,779 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:43:10,280 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:10,497 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:11,999 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:12,464 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:13,001 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:13,915 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:43:14,141 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:43:14,478 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:43:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:43:14,526 INFO L93 Difference]: Finished difference Result 6057 states and 9938 transitions. [2020-10-13 13:43:14,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:43:14,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 243 [2020-10-13 13:43:14,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:43:14,551 INFO L225 Difference]: With dead ends: 6057 [2020-10-13 13:43:14,552 INFO L226 Difference]: Without dead ends: 4547 [2020-10-13 13:43:14,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:43:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4547 states. [2020-10-13 13:43:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4547 to 3481. [2020-10-13 13:43:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3481 states. [2020-10-13 13:43:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 5692 transitions. [2020-10-13 13:43:14,868 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 5692 transitions. Word has length 243 [2020-10-13 13:43:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:43:14,869 INFO L479 AbstractCegarLoop]: Abstraction has 3481 states and 5692 transitions. [2020-10-13 13:43:14,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:43:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 5692 transitions. [2020-10-13 13:43:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-13 13:43:14,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:43:14,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:14,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:43:14,876 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:43:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:43:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1651818778, now seen corresponding path program 1 times [2020-10-13 13:43:14,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:43:14,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688267818] [2020-10-13 13:43:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:43:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:15,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:19,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:19,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-13 13:43:19,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:43:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 13:43:19,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-13 13:43:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 13:43:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:20,651 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:43:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:43:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:20,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:20,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:43:20,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:43:20,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:20,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:43:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:20,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:20,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:20,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:43:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 13:43:20,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 13:43:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:20,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 13:43:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:20,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:43:20,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:43:20,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:43:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 13:43:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:20,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:20,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:20,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:43:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:20,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-13 13:43:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:20,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:20,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:20,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:20,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:20,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-13 13:43:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:21,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:21,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:21,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:21,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:21,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:21,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-13 13:43:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:21,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:21,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:21,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:21,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:21,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:21,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:21,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:21,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 13:43:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:21,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:21,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:21,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:43:21,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:21,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-13 13:43:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:21,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:21,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:43:21,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:43:21,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:43:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:21,255 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 13:43:21,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688267818] [2020-10-13 13:43:21,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:43:21,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:43:21,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351440737] [2020-10-13 13:43:21,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:43:21,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:43:21,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:43:21,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:43:21,258 INFO L87 Difference]: Start difference. First operand 3481 states and 5692 transitions. Second operand 11 states. [2020-10-13 13:43:21,992 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:43:27,873 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:28,606 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:29,378 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:30,106 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:30,829 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:31,291 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:43:32,430 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:32,905 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:33,393 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:33,878 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:34,804 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:43:35,038 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:43:35,402 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:43:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:43:35,453 INFO L93 Difference]: Finished difference Result 11325 states and 18430 transitions. [2020-10-13 13:43:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:43:35,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-10-13 13:43:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:43:35,499 INFO L225 Difference]: With dead ends: 11325 [2020-10-13 13:43:35,499 INFO L226 Difference]: Without dead ends: 8387 [2020-10-13 13:43:35,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:43:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8387 states. [2020-10-13 13:43:36,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8387 to 6257. [2020-10-13 13:43:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6257 states. [2020-10-13 13:43:36,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6257 states to 6257 states and 10100 transitions. [2020-10-13 13:43:36,168 INFO L78 Accepts]: Start accepts. Automaton has 6257 states and 10100 transitions. Word has length 247 [2020-10-13 13:43:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:43:36,168 INFO L479 AbstractCegarLoop]: Abstraction has 6257 states and 10100 transitions. [2020-10-13 13:43:36,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:43:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6257 states and 10100 transitions. [2020-10-13 13:43:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 13:43:36,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:43:36,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:36,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:43:36,177 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:43:36,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:43:36,177 INFO L82 PathProgramCache]: Analyzing trace with hash -772356926, now seen corresponding path program 1 times [2020-10-13 13:43:36,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:43:36,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526699993] [2020-10-13 13:43:36,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:43:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:36,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:36,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:37,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:41,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:41,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 13:43:41,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:43:41,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:43:41,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:43:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 13:43:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 13:43:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:42,045 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:43:42,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:43:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:42,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:42,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:42,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:43:42,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:43:42,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:42,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:42,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:43:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:42,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:42,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:42,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:43:42,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-13 13:43:42,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:43:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 13:43:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:42,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 13:43:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:42,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:42,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:42,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:43:42,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:42,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:43:42,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:43:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 13:43:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:42,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:42,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:42,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:43:42,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:43:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-13 13:43:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:42,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:42,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:42,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:42,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:43:42,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:43:42,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:42,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-13 13:43:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:42,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:42,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:42,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:43:42,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:43:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-13 13:43:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:42,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:42,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:42,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:43:42,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:43:42,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:42,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 13:43:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:42,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:42,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:42,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:42,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:43:42,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:43:42,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-13 13:43:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:42,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:42,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:43:42,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:43:42,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:43:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:43:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:43:43,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526699993] [2020-10-13 13:43:43,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:43:43,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 13:43:43,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249906199] [2020-10-13 13:43:43,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:43:43,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:43:43,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:43:43,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:43:43,096 INFO L87 Difference]: Start difference. First operand 6257 states and 10100 transitions. Second operand 19 states. [2020-10-13 13:43:43,809 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-13 13:43:50,307 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:43:50,995 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:43:51,684 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-13 13:43:52,391 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-13 13:43:52,878 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:43:53,413 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:53,883 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:43:54,151 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:43:54,825 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:55,215 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:55,605 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:43:55,877 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:43:56,115 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:43:56,924 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:43:57,365 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:57,614 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:58,075 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:43:58,356 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:43:58,592 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:43:58,829 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:43:59,772 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:00,261 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:00,524 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:00,799 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:01,401 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:44:01,732 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:01,968 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:02,205 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:02,504 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:03,600 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:04,091 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:04,340 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:04,598 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:04,858 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:06,050 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:44:06,754 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-13 13:44:07,474 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-13 13:44:08,209 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2020-10-13 13:44:08,957 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2020-10-13 13:44:12,468 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:12,738 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:13,010 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:44:13,275 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:44:13,545 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:44:13,819 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:14,066 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:14,328 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:14,598 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:14,866 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:17,380 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-13 13:44:17,660 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:18,175 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 13:44:18,438 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:18,703 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:18,976 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:44:19,517 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:44:19,774 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:20,030 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:20,295 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:22,962 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:44:23,271 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:23,711 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:44:24,102 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:44:24,362 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:24,628 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:44:25,269 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:25,531 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:25,791 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:28,382 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:28,785 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:44:29,058 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:29,445 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:29,866 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:44:30,166 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:44:30,725 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:31,021 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:33,437 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:33,735 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:44:34,171 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:44:34,470 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:34,760 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:35,203 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:44:35,742 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:44:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:44:38,765 INFO L93 Difference]: Finished difference Result 54274 states and 89273 transitions. [2020-10-13 13:44:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-10-13 13:44:38,765 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 251 [2020-10-13 13:44:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:44:38,967 INFO L225 Difference]: With dead ends: 54274 [2020-10-13 13:44:38,968 INFO L226 Difference]: Without dead ends: 48560 [2020-10-13 13:44:39,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4422 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=2411, Invalid=10245, Unknown=0, NotChecked=0, Total=12656 [2020-10-13 13:44:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48560 states. [2020-10-13 13:44:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48560 to 35124. [2020-10-13 13:44:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35124 states. [2020-10-13 13:44:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35124 states to 35124 states and 56782 transitions. [2020-10-13 13:44:42,606 INFO L78 Accepts]: Start accepts. Automaton has 35124 states and 56782 transitions. Word has length 251 [2020-10-13 13:44:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:44:42,607 INFO L479 AbstractCegarLoop]: Abstraction has 35124 states and 56782 transitions. [2020-10-13 13:44:42,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 13:44:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 35124 states and 56782 transitions. [2020-10-13 13:44:42,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-13 13:44:42,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:44:42,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:42,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:44:42,621 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:44:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:44:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash -906687872, now seen corresponding path program 1 times [2020-10-13 13:44:42,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:44:42,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045872765] [2020-10-13 13:44:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:44:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:47,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:47,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-13 13:44:47,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:44:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 13:44:47,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:44:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 13:44:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 13:44:47,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:48,493 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:44:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:44:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:48,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:44:48,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:44:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:44:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:48,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:44:48,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 13:44:48,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:44:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-13 13:44:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:48,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 13:44:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:48,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:44:48,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:44:48,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:44:48,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 13:44:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:48,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:48,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:48,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:44:48,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:44:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-13 13:44:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:48,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:48,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:44:48,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-13 13:44:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:48,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:48,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:44:48,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:49,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-13 13:44:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:49,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:49,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:49,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:49,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:49,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:44:49,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:49,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 13:44:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:49,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:49,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:49,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:44:49,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-13 13:44:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:49,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:49,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:49,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:49,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:44:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:44:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:44:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:49,182 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 13:44:49,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045872765] [2020-10-13 13:44:49,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:44:49,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:44:49,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204876745] [2020-10-13 13:44:49,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:44:49,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:44:49,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:44:49,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:44:49,184 INFO L87 Difference]: Start difference. First operand 35124 states and 56782 transitions. Second operand 12 states. [2020-10-13 13:44:49,908 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:44:57,021 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:44:57,658 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-13 13:44:58,169 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:58,383 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:58,806 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184