/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.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:36:19,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:36:19,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:36:19,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:36:19,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:36:19,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:36:19,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:36:19,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:36:19,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:36:19,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:36:19,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:36:19,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:36:19,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:36:19,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:36:19,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:36:19,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:36:19,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:36:19,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:36:19,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:36:19,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:36:19,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:36:19,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:36:19,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:36:19,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:36:19,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:36:19,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:36:19,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:36:19,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:36:19,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:36:19,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:36:19,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:36:19,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:36:19,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:36:19,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:36:19,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:36:19,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:36:19,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:36:19,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:36:19,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:36:19,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:36:19,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:36:19,357 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 13:36:19,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:36:19,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:36:19,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:36:19,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:36:19,402 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:36:19,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:36:19,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:36:19,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:36:19,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:36:19,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:36:19,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:36:19,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:36:19,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:36:19,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:36:19,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:36:19,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:36:19,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:36:19,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:36:19,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:36:19,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:36:19,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:36:19,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:36:19,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:36:19,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:36:19,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:36:19,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:36:19,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:36:19,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:36:19,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:36:19,409 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 13:36:19,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:36:19,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:36:19,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:36:19,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:36:19,752 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:36:19,753 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-13 13:36:19,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae5fac7d0/5ca31afdd99b4c509d6e2a1778966f6e/FLAGac89ce8ec [2020-10-13 13:36:20,391 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:36:20,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-13 13:36:20,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae5fac7d0/5ca31afdd99b4c509d6e2a1778966f6e/FLAGac89ce8ec [2020-10-13 13:36:20,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae5fac7d0/5ca31afdd99b4c509d6e2a1778966f6e [2020-10-13 13:36:20,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:36:20,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:36:20,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:36:20,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:36:20,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:36:20,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:36:20" (1/1) ... [2020-10-13 13:36:20,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137e61c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:20, skipping insertion in model container [2020-10-13 13:36:20,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:36:20" (1/1) ... [2020-10-13 13:36:20,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:36:20,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:36:21,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:36:21,172 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:36:21,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:36:21,262 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:36:21,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21 WrapperNode [2020-10-13 13:36:21,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:36:21,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:36:21,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:36:21,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:36:21,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21" (1/1) ... [2020-10-13 13:36:21,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21" (1/1) ... [2020-10-13 13:36:21,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21" (1/1) ... [2020-10-13 13:36:21,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21" (1/1) ... [2020-10-13 13:36:21,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21" (1/1) ... [2020-10-13 13:36:21,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21" (1/1) ... [2020-10-13 13:36:21,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21" (1/1) ... [2020-10-13 13:36:21,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:36:21,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:36:21,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:36:21,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:36:21,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21" (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 13:36:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:36:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:36:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:36:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:36:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:36:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:36:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:36:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:36:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:36:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:36:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:36:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:36:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:36:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:36:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:36:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:36:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:36:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:36:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:36:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:36:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:36:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:36:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:36:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:36:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:36:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:36:22,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:36:22,241 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:36:22,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:36:22 BoogieIcfgContainer [2020-10-13 13:36:22,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:36:22,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:36:22,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:36:22,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:36:22,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:36:20" (1/3) ... [2020-10-13 13:36:22,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fea380a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:36:22, skipping insertion in model container [2020-10-13 13:36:22,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:21" (2/3) ... [2020-10-13 13:36:22,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fea380a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:36:22, skipping insertion in model container [2020-10-13 13:36:22,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:36:22" (3/3) ... [2020-10-13 13:36:22,256 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-13 13:36:22,268 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:36:22,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:36:22,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:36:22,317 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:36:22,318 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:36:22,318 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:36:22,318 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:36:22,318 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:36:22,318 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:36:22,318 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:36:22,319 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:36:22,341 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-10-13 13:36:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:36:22,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:22,355 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] [2020-10-13 13:36:22,355 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:22,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:22,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1825328611, now seen corresponding path program 1 times [2020-10-13 13:36:22,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:22,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279425519] [2020-10-13 13:36:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:23,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:36:23,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-13 13:36:23,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:36:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:23,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:36:23,409 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:23,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:23,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:23,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:23,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:36:23,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:23,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:23,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:23,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:23,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:23,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:23,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:23,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:36:23,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:23,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:36:23,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:23,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:23,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:23,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:23,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:36:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:23,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:23,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:23,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:23,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:23,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:23,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:36:23,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:23,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:36:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:23,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:23,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:36:23,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:23,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:36:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:23,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:23,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:23,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:23,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:36:23,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:23,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:23,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:36:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:23,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:23,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:23,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:23,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:23,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:23,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:23,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:23,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:23,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:23,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:23,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:23,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:23,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:36:23,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279425519] [2020-10-13 13:36:23,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:23,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:36:23,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096912674] [2020-10-13 13:36:23,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:36:23,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:23,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:36:23,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:36:23,804 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 6 states. [2020-10-13 13:36:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:24,977 INFO L93 Difference]: Finished difference Result 294 states and 465 transitions. [2020-10-13 13:36:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:36:24,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-13 13:36:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:24,993 INFO L225 Difference]: With dead ends: 294 [2020-10-13 13:36:24,994 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 13:36:24,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 13:36:25,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 169. [2020-10-13 13:36:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 13:36:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 271 transitions. [2020-10-13 13:36:25,060 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 271 transitions. Word has length 65 [2020-10-13 13:36:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:25,061 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 271 transitions. [2020-10-13 13:36:25,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:36:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 271 transitions. [2020-10-13 13:36:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:36:25,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:25,065 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] [2020-10-13 13:36:25,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:36:25,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:25,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:25,066 INFO L82 PathProgramCache]: Analyzing trace with hash 795969313, now seen corresponding path program 1 times [2020-10-13 13:36:25,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:25,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320757784] [2020-10-13 13:36:25,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:25,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:25,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:36:25,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-13 13:36:25,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:36:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:36:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:36:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:26,105 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:26,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:26,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:26,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:26,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:36:26,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:26,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:26,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:26,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:36:26,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:36:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:36:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:36:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:26,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:26,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:26,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:36:26,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:36:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:26,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:36:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:26,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:26,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:26,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:26,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:36:26,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:26,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:36:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:26,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:26,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:26,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:36:26,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:26,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:36:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:26,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:26,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:26,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:26,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:36:26,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:26,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:26,536 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 13:36:26,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320757784] [2020-10-13 13:36:26,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:26,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:36:26,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095117987] [2020-10-13 13:36:26,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:36:26,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:26,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:36:26,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:36:26,544 INFO L87 Difference]: Start difference. First operand 169 states and 271 transitions. Second operand 12 states. [2020-10-13 13:36:27,021 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:27,232 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:36:27,547 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:27,733 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:36:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:29,351 INFO L93 Difference]: Finished difference Result 296 states and 467 transitions. [2020-10-13 13:36:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:36:29,352 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-13 13:36:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:29,359 INFO L225 Difference]: With dead ends: 296 [2020-10-13 13:36:29,359 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 13:36:29,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:36:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 13:36:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 169. [2020-10-13 13:36:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 13:36:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 241 transitions. [2020-10-13 13:36:29,388 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 241 transitions. Word has length 65 [2020-10-13 13:36:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:29,388 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 241 transitions. [2020-10-13 13:36:29,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:36:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 241 transitions. [2020-10-13 13:36:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:36:29,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:29,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:36:29,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:36:29,393 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:29,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:29,393 INFO L82 PathProgramCache]: Analyzing trace with hash 483350775, now seen corresponding path program 1 times [2020-10-13 13:36:29,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:29,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133148813] [2020-10-13 13:36:29,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:32,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:36:34,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:36:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:36:34,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:36:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:36:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:34,626 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:34,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:34,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:34,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:36:34,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:34,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:36:34,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:36:34,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:36:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:34,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:34,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:36:34,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:34,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:36:34,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:36:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:34,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:34,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:36:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:34,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:34,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:36:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:34,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:34,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:36:34,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:34,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:34,924 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 13:36:34,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133148813] [2020-10-13 13:36:34,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:34,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:36:34,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348761296] [2020-10-13 13:36:34,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:36:34,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:34,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:36:34,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:34,927 INFO L87 Difference]: Start difference. First operand 169 states and 241 transitions. Second operand 9 states. [2020-10-13 13:36:35,104 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:36:36,793 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:37,204 INFO L93 Difference]: Finished difference Result 395 states and 592 transitions. [2020-10-13 13:36:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:36:37,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-13 13:36:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:37,210 INFO L225 Difference]: With dead ends: 395 [2020-10-13 13:36:37,211 INFO L226 Difference]: Without dead ends: 298 [2020-10-13 13:36:37,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:36:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-13 13:36:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 256. [2020-10-13 13:36:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-13 13:36:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 371 transitions. [2020-10-13 13:36:37,277 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 371 transitions. Word has length 94 [2020-10-13 13:36:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:37,278 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 371 transitions. [2020-10-13 13:36:37,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:36:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 371 transitions. [2020-10-13 13:36:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:36:37,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:37,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:36:37,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:36:37,283 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:37,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1717142036, now seen corresponding path program 1 times [2020-10-13 13:36:37,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:37,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528817514] [2020-10-13 13:36:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:37,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:42,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:36:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:36:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 13:36:42,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:36:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:36:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:42,567 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:42,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:42,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:42,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:42,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:36:42,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:42,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:42,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:42,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:36:42,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:42,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:36:42,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:36:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:42,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:42,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:42,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:36:42,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:42,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:42,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:42,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:42,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:42,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:36:42,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:36:42,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:42,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:36:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:42,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:42,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:42,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:36:42,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:36:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:42,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:36:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:42,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:42,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:36:42,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:36:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:42,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:42,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:36:42,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:42,871 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 13:36:42,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528817514] [2020-10-13 13:36:42,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:42,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:36:42,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951917855] [2020-10-13 13:36:42,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:36:42,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:42,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:36:42,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:42,876 INFO L87 Difference]: Start difference. First operand 256 states and 371 transitions. Second operand 9 states. [2020-10-13 13:36:43,076 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:36:44,991 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:36:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:45,199 INFO L93 Difference]: Finished difference Result 678 states and 1015 transitions. [2020-10-13 13:36:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:36:45,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-13 13:36:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:45,203 INFO L225 Difference]: With dead ends: 678 [2020-10-13 13:36:45,203 INFO L226 Difference]: Without dead ends: 494 [2020-10-13 13:36:45,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:36:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-13 13:36:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 426. [2020-10-13 13:36:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-13 13:36:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 627 transitions. [2020-10-13 13:36:45,245 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 627 transitions. Word has length 96 [2020-10-13 13:36:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:45,246 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 627 transitions. [2020-10-13 13:36:45,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:36:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 627 transitions. [2020-10-13 13:36:45,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:36:45,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:45,249 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] [2020-10-13 13:36:45,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:36:45,249 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:45,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:45,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2041666057, now seen corresponding path program 1 times [2020-10-13 13:36:45,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:45,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856323143] [2020-10-13 13:36:45,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:45,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:50,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:50,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:36:50,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:36:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:36:50,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:36:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:36:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:36:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:50,483 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:50,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:50,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:50,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:50,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:50,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:50,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:50,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:50,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:50,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:36:50,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:50,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 13:36:50,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:36:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:50,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:50,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:50,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:50,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:50,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:36:50,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:50,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:50,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:50,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:50,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:50,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:50,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:36:50,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:36:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:50,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:50,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:50,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:50,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:36:50,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:50,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:36:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:50,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:50,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:50,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:50,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:50,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:36:50,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:36:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:50,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:36:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:50,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:50,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:50,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:50,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:50,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:36:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:36:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:50,823 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 13:36:50,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856323143] [2020-10-13 13:36:50,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:50,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:36:50,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961905653] [2020-10-13 13:36:50,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:36:50,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:50,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:36:50,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:36:50,825 INFO L87 Difference]: Start difference. First operand 426 states and 627 transitions. Second operand 13 states. [2020-10-13 13:36:51,014 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:51,479 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:36:51,647 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:53,693 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:53,892 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:36:54,139 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:36:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:58,024 INFO L93 Difference]: Finished difference Result 2531 states and 3876 transitions. [2020-10-13 13:36:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 13:36:58,025 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2020-10-13 13:36:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:58,041 INFO L225 Difference]: With dead ends: 2531 [2020-10-13 13:36:58,041 INFO L226 Difference]: Without dead ends: 2177 [2020-10-13 13:36:58,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=588, Invalid=1962, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 13:36:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2020-10-13 13:36:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1831. [2020-10-13 13:36:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1831 states. [2020-10-13 13:36:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2771 transitions. [2020-10-13 13:36:58,167 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2771 transitions. Word has length 98 [2020-10-13 13:36:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:58,168 INFO L479 AbstractCegarLoop]: Abstraction has 1831 states and 2771 transitions. [2020-10-13 13:36:58,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:36:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2771 transitions. [2020-10-13 13:36:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:36:58,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:58,171 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] [2020-10-13 13:36:58,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:36:58,172 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:58,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:58,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1261721227, now seen corresponding path program 1 times [2020-10-13 13:36:58,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:58,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096652082] [2020-10-13 13:36:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:58,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:03,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:37:03,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:37:03,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:37:03,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:37:03,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:37:03,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:37:03,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:03,422 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:03,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:03,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:03,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:37:03,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:03,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:03,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:03,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:37:03,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:37:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:03,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:03,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:03,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:03,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:03,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:03,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:03,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:37:03,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:03,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:37:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:03,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:03,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:03,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:37:03,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:03,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:03,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:37:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:03,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:37:03,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:37:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:03,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:37:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:03,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:03,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:03,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:03,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:03,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:37:03,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:03,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:03,900 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 13:37:03,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096652082] [2020-10-13 13:37:03,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:03,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-13 13:37:03,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827955953] [2020-10-13 13:37:03,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:37:03,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:03,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:37:03,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:37:03,905 INFO L87 Difference]: Start difference. First operand 1831 states and 2771 transitions. Second operand 15 states. [2020-10-13 13:37:04,119 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:37:04,617 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:04,802 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:04,989 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:05,786 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:08,197 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:37:08,396 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:08,570 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:08,781 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:09,002 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:37:09,347 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:09,659 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:37:13,585 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:14,731 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:18,518 INFO L93 Difference]: Finished difference Result 7716 states and 12051 transitions. [2020-10-13 13:37:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-13 13:37:18,524 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-10-13 13:37:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:18,560 INFO L225 Difference]: With dead ends: 7716 [2020-10-13 13:37:18,560 INFO L226 Difference]: Without dead ends: 5957 [2020-10-13 13:37:18,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2949 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1459, Invalid=6731, Unknown=0, NotChecked=0, Total=8190 [2020-10-13 13:37:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2020-10-13 13:37:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 3755. [2020-10-13 13:37:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3755 states. [2020-10-13 13:37:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5746 transitions. [2020-10-13 13:37:18,926 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5746 transitions. Word has length 99 [2020-10-13 13:37:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:18,928 INFO L479 AbstractCegarLoop]: Abstraction has 3755 states and 5746 transitions. [2020-10-13 13:37:18,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:37:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5746 transitions. [2020-10-13 13:37:18,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:37:18,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:18,932 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] [2020-10-13 13:37:18,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:37:18,933 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:18,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:18,933 INFO L82 PathProgramCache]: Analyzing trace with hash 535826990, now seen corresponding path program 1 times [2020-10-13 13:37:18,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:18,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820122282] [2020-10-13 13:37:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:23,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:23,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:37:23,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:37:23,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:37:23,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:37:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:37:23,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,195 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:24,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:37:24,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:24,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:37:24,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:24,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:24,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:24,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:24,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:24,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:24,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:37:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:37:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:24,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:24,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:37:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:24,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:37:24,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:37:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:37:24,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:24,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:37:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:24,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,554 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 13:37:24,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820122282] [2020-10-13 13:37:24,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:24,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:24,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255018184] [2020-10-13 13:37:24,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:24,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:24,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:24,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:24,556 INFO L87 Difference]: Start difference. First operand 3755 states and 5746 transitions. Second operand 9 states. [2020-10-13 13:37:24,769 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:25,016 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:37:25,233 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 13:37:25,922 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-13 13:37:26,519 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:29,536 INFO L93 Difference]: Finished difference Result 13496 states and 20977 transitions. [2020-10-13 13:37:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:37:29,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-13 13:37:29,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:29,596 INFO L225 Difference]: With dead ends: 13496 [2020-10-13 13:37:29,596 INFO L226 Difference]: Without dead ends: 9772 [2020-10-13 13:37:29,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:37:29,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9772 states. [2020-10-13 13:37:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9772 to 8520. [2020-10-13 13:37:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8520 states. [2020-10-13 13:37:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8520 states to 8520 states and 12928 transitions. [2020-10-13 13:37:30,381 INFO L78 Accepts]: Start accepts. Automaton has 8520 states and 12928 transitions. Word has length 100 [2020-10-13 13:37:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:30,382 INFO L479 AbstractCegarLoop]: Abstraction has 8520 states and 12928 transitions. [2020-10-13 13:37:30,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 8520 states and 12928 transitions. [2020-10-13 13:37:30,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:37:30,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:30,389 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] [2020-10-13 13:37:30,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:37:30,391 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:30,391 INFO L82 PathProgramCache]: Analyzing trace with hash 812265021, now seen corresponding path program 1 times [2020-10-13 13:37:30,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:30,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933632187] [2020-10-13 13:37:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:35,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:37:35,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:37:35,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:37:35,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:37:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:37:35,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:35,595 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:35,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:35,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:35,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:35,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:35,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:35,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:35,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:35,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:37:35,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:37:35,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:35,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:35,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:35,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:35,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:35,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:35,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:35,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:37:35,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:35,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:37:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:35,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:35,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:37:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:35,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:35,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:35,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:35,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:37:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:35,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:37:35,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:35,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:35,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:35,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:35,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:37:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:35,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:35,831 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 13:37:35,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933632187] [2020-10-13 13:37:35,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:35,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:35,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884973626] [2020-10-13 13:37:35,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:35,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:35,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:35,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:35,834 INFO L87 Difference]: Start difference. First operand 8520 states and 12928 transitions. Second operand 9 states. [2020-10-13 13:37:36,043 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:39,061 INFO L93 Difference]: Finished difference Result 20007 states and 30635 transitions. [2020-10-13 13:37:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:37:39,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-13 13:37:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:39,128 INFO L225 Difference]: With dead ends: 20007 [2020-10-13 13:37:39,128 INFO L226 Difference]: Without dead ends: 13085 [2020-10-13 13:37:39,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:37:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13085 states. [2020-10-13 13:37:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13085 to 11431. [2020-10-13 13:37:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11431 states. [2020-10-13 13:37:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 17183 transitions. [2020-10-13 13:37:39,960 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 17183 transitions. Word has length 101 [2020-10-13 13:37:39,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:39,960 INFO L479 AbstractCegarLoop]: Abstraction has 11431 states and 17183 transitions. [2020-10-13 13:37:39,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:39,961 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 17183 transitions. [2020-10-13 13:37:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:37:39,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:39,965 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] [2020-10-13 13:37:39,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:37:39,965 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:39,966 INFO L82 PathProgramCache]: Analyzing trace with hash 704452898, now seen corresponding path program 1 times [2020-10-13 13:37:39,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:39,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375583781] [2020-10-13 13:37:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:40,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:37:45,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:37:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:37:45,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:37:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:37:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:45,212 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:45,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:45,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:45,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:45,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:45,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:45,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:45,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:37:45,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:37:45,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:45,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:45,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:45,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:37:45,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:45,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:37:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:45,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:45,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:45,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:37:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:45,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:45,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:45,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:45,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:45,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:45,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:37:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:37:45,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:45,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:37:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:45,440 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 13:37:45,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375583781] [2020-10-13 13:37:45,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:45,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:45,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695813917] [2020-10-13 13:37:45,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:45,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:45,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:45,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:45,443 INFO L87 Difference]: Start difference. First operand 11431 states and 17183 transitions. Second operand 9 states. [2020-10-13 13:37:46,068 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:48,110 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:37:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:48,847 INFO L93 Difference]: Finished difference Result 29679 states and 45293 transitions. [2020-10-13 13:37:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:37:48,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-13 13:37:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:48,928 INFO L225 Difference]: With dead ends: 29679 [2020-10-13 13:37:48,929 INFO L226 Difference]: Without dead ends: 18446 [2020-10-13 13:37:48,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:37:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18446 states. [2020-10-13 13:37:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18446 to 15921. [2020-10-13 13:37:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15921 states. [2020-10-13 13:37:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15921 states to 15921 states and 24068 transitions. [2020-10-13 13:37:50,910 INFO L78 Accepts]: Start accepts. Automaton has 15921 states and 24068 transitions. Word has length 101 [2020-10-13 13:37:50,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:50,910 INFO L479 AbstractCegarLoop]: Abstraction has 15921 states and 24068 transitions. [2020-10-13 13:37:50,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:50,910 INFO L276 IsEmpty]: Start isEmpty. Operand 15921 states and 24068 transitions. [2020-10-13 13:37:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:37:50,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:50,913 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] [2020-10-13 13:37:50,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:37:50,913 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:50,914 INFO L82 PathProgramCache]: Analyzing trace with hash -389887278, now seen corresponding path program 1 times [2020-10-13 13:37:50,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:50,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232063410] [2020-10-13 13:37:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:53,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:53,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:55,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:55,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:37:55,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:37:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:37:55,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:37:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,122 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:56,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:56,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 13:37:56,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:37:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:37:56,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:37:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:56,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:37:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:56,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:56,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:37:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:37:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:56,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:56,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:56,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:37:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:56,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:56,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:37:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:37:56,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:56,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:37:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,326 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 13:37:56,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232063410] [2020-10-13 13:37:56,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:56,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:37:56,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167508986] [2020-10-13 13:37:56,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:37:56,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:56,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:37:56,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:37:56,328 INFO L87 Difference]: Start difference. First operand 15921 states and 24068 transitions. Second operand 7 states. [2020-10-13 13:37:56,548 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:59,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:59,580 INFO L93 Difference]: Finished difference Result 34019 states and 51524 transitions. [2020-10-13 13:37:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:37:59,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-13 13:37:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:59,655 INFO L225 Difference]: With dead ends: 34019 [2020-10-13 13:37:59,655 INFO L226 Difference]: Without dead ends: 18132 [2020-10-13 13:37:59,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:37:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18132 states. [2020-10-13 13:38:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18132 to 15923. [2020-10-13 13:38:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15923 states. [2020-10-13 13:38:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15923 states to 15923 states and 24070 transitions. [2020-10-13 13:38:00,777 INFO L78 Accepts]: Start accepts. Automaton has 15923 states and 24070 transitions. Word has length 101 [2020-10-13 13:38:00,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:00,778 INFO L479 AbstractCegarLoop]: Abstraction has 15923 states and 24070 transitions. [2020-10-13 13:38:00,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:38:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 15923 states and 24070 transitions. [2020-10-13 13:38:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:38:00,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:00,781 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] [2020-10-13 13:38:00,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:38:00,781 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:00,781 INFO L82 PathProgramCache]: Analyzing trace with hash 592271554, now seen corresponding path program 1 times [2020-10-13 13:38:00,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:00,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251724080] [2020-10-13 13:38:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:00,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:00,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:00,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:38:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:38:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:38:05,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:38:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:38:05,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:05,986 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:05,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:05,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:05,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:05,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:06,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:06,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:06,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:38:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 13:38:06,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:38:06,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:06,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:06,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:06,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:06,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:06,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:38:06,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:06,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:06,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:06,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:06,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:06,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:06,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:06,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:06,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:06,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:06,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:06,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:06,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:06,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:06,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:06,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:06,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:06,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:38:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:06,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:38:06,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:06,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:38:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:06,269 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 13:38:06,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251724080] [2020-10-13 13:38:06,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:06,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:38:06,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685722229] [2020-10-13 13:38:06,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:38:06,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:06,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:38:06,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:38:06,271 INFO L87 Difference]: Start difference. First operand 15923 states and 24070 transitions. Second operand 8 states. [2020-10-13 13:38:06,510 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:06,711 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-13 13:38:08,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:08,858 INFO L93 Difference]: Finished difference Result 33901 states and 51393 transitions. [2020-10-13 13:38:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:38:08,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-10-13 13:38:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:08,921 INFO L225 Difference]: With dead ends: 33901 [2020-10-13 13:38:08,922 INFO L226 Difference]: Without dead ends: 17998 [2020-10-13 13:38:08,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:38:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17998 states. [2020-10-13 13:38:10,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17998 to 15922. [2020-10-13 13:38:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15922 states. [2020-10-13 13:38:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 24066 transitions. [2020-10-13 13:38:10,400 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 24066 transitions. Word has length 102 [2020-10-13 13:38:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:10,400 INFO L479 AbstractCegarLoop]: Abstraction has 15922 states and 24066 transitions. [2020-10-13 13:38:10,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:38:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 24066 transitions. [2020-10-13 13:38:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:38:10,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:10,403 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] [2020-10-13 13:38:10,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:38:10,404 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:10,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:10,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1171569865, now seen corresponding path program 1 times [2020-10-13 13:38:10,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:10,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755745279] [2020-10-13 13:38:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:12,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:38:15,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:38:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:38:15,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:38:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:38:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:38:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:15,604 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:15,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:15,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:15,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:15,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:15,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:15,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:15,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:15,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:38:15,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:38:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:15,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:15,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:15,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:15,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:15,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:15,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:15,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:15,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:15,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:15,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:15,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:15,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:15,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:15,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:15,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:38:15,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:15,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:15,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:15,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:15,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:38:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:15,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:38:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:15,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:38:15,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:15,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:38:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:38:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:15,900 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 13:38:15,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755745279] [2020-10-13 13:38:15,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:15,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:38:15,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305266168] [2020-10-13 13:38:15,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:38:15,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:15,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:38:15,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:38:15,902 INFO L87 Difference]: Start difference. First operand 15922 states and 24066 transitions. Second operand 10 states. [2020-10-13 13:38:16,079 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:16,505 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:18,068 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:18,255 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:19,613 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-13 13:38:19,781 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-10-13 13:38:20,004 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-13 13:38:22,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:22,015 INFO L93 Difference]: Finished difference Result 51976 states and 79142 transitions. [2020-10-13 13:38:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 13:38:22,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-10-13 13:38:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:22,143 INFO L225 Difference]: With dead ends: 51976 [2020-10-13 13:38:22,144 INFO L226 Difference]: Without dead ends: 36312 [2020-10-13 13:38:22,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2020-10-13 13:38:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36312 states. [2020-10-13 13:38:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36312 to 31919. [2020-10-13 13:38:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31919 states. [2020-10-13 13:38:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31919 states to 31919 states and 48086 transitions. [2020-10-13 13:38:23,921 INFO L78 Accepts]: Start accepts. Automaton has 31919 states and 48086 transitions. Word has length 102 [2020-10-13 13:38:23,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:23,921 INFO L479 AbstractCegarLoop]: Abstraction has 31919 states and 48086 transitions. [2020-10-13 13:38:23,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:38:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 31919 states and 48086 transitions. [2020-10-13 13:38:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:38:23,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:23,924 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] [2020-10-13 13:38:23,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:38:23,925 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:23,925 INFO L82 PathProgramCache]: Analyzing trace with hash -581925413, now seen corresponding path program 1 times [2020-10-13 13:38:23,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:23,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140546948] [2020-10-13 13:38:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:28,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:28,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:38:28,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:38:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:38:28,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:38:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:38:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,120 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:29,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:29,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:29,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:29,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:29,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:38:29,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:38:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:29,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:29,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:29,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:29,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:29,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:38:29,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:29,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:38:29,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:38:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:29,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:29,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:29,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:29,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:38:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:29,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:29,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:29,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,339 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 13:38:29,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140546948] [2020-10-13 13:38:29,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:29,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:29,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802568332] [2020-10-13 13:38:29,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:29,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:29,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:29,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:29,341 INFO L87 Difference]: Start difference. First operand 31919 states and 48086 transitions. Second operand 9 states. [2020-10-13 13:38:29,516 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:33,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:33,853 INFO L93 Difference]: Finished difference Result 81862 states and 124168 transitions. [2020-10-13 13:38:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:38:33,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-13 13:38:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:34,055 INFO L225 Difference]: With dead ends: 81862 [2020-10-13 13:38:34,056 INFO L226 Difference]: Without dead ends: 56255 [2020-10-13 13:38:34,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:38:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56255 states. [2020-10-13 13:38:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56255 to 50483. [2020-10-13 13:38:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50483 states. [2020-10-13 13:38:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50483 states to 50483 states and 75314 transitions. [2020-10-13 13:38:36,994 INFO L78 Accepts]: Start accepts. Automaton has 50483 states and 75314 transitions. Word has length 102 [2020-10-13 13:38:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:36,994 INFO L479 AbstractCegarLoop]: Abstraction has 50483 states and 75314 transitions. [2020-10-13 13:38:36,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:38:36,995 INFO L276 IsEmpty]: Start isEmpty. Operand 50483 states and 75314 transitions. [2020-10-13 13:38:36,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:38:36,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:36,996 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] [2020-10-13 13:38:36,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:38:36,997 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:36,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:36,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1984417127, now seen corresponding path program 1 times [2020-10-13 13:38:36,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:36,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221154645] [2020-10-13 13:38:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:42,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:42,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:38:42,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:38:42,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:38:42,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:38:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:38:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:38:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:42,199 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:42,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:42,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:42,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:42,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:42,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:42,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:42,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:42,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:42,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:38:42,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:42,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:42,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:42,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:38:42,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:42,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:42,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:42,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:42,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:42,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:42,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:42,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:42,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:42,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:42,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:42,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:42,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:42,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:42,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:42,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:42,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:42,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:42,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:42,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:42,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:42,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:42,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:38:42,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:38:42,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:38:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:42,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:42,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:42,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:42,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:38:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:38:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:42,424 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 13:38:42,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221154645] [2020-10-13 13:38:42,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:42,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:38:42,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438696047] [2020-10-13 13:38:42,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:38:42,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:42,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:38:42,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:38:42,426 INFO L87 Difference]: Start difference. First operand 50483 states and 75314 transitions. Second operand 10 states. [2020-10-13 13:38:42,605 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:43,042 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:44,238 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:44,416 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:53,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:53,349 INFO L93 Difference]: Finished difference Result 207109 states and 310673 transitions. [2020-10-13 13:38:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:38:53,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-10-13 13:38:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:53,768 INFO L225 Difference]: With dead ends: 207109 [2020-10-13 13:38:53,768 INFO L226 Difference]: Without dead ends: 156865 [2020-10-13 13:38:53,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:38:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156865 states. [2020-10-13 13:39:02,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156865 to 139793. [2020-10-13 13:39:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139793 states. [2020-10-13 13:39:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139793 states to 139793 states and 207242 transitions. [2020-10-13 13:39:02,782 INFO L78 Accepts]: Start accepts. Automaton has 139793 states and 207242 transitions. Word has length 103 [2020-10-13 13:39:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:02,782 INFO L479 AbstractCegarLoop]: Abstraction has 139793 states and 207242 transitions. [2020-10-13 13:39:02,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:39:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 139793 states and 207242 transitions. [2020-10-13 13:39:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:39:02,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:02,784 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] [2020-10-13 13:39:02,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:39:02,784 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:02,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1357205054, now seen corresponding path program 1 times [2020-10-13 13:39:02,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:02,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600516999] [2020-10-13 13:39:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:02,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:02,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:02,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:03,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:04,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:07,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:39:07,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:39:07,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:39:07,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 13:39:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:39:07,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:07,992 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:07,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:07,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:08,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:39:08,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:08,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:39:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:39:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:08,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:08,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:08,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:08,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:39:08,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:39:08,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:39:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:39:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:39:08,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:08,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:39:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:08,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,216 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 13:39:08,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600516999] [2020-10-13 13:39:08,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:08,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:08,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484703168] [2020-10-13 13:39:08,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:08,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:08,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:08,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:08,218 INFO L87 Difference]: Start difference. First operand 139793 states and 207242 transitions. Second operand 9 states. [2020-10-13 13:39:08,413 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:20,974 INFO L93 Difference]: Finished difference Result 399568 states and 592683 transitions. [2020-10-13 13:39:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:39:20,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-13 13:39:20,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:21,811 INFO L225 Difference]: With dead ends: 399568 [2020-10-13 13:39:21,812 INFO L226 Difference]: Without dead ends: 260014 [2020-10-13 13:39:22,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:39:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260014 states. [2020-10-13 13:39:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260014 to 237869. [2020-10-13 13:39:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237869 states. [2020-10-13 13:39:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237869 states to 237869 states and 342868 transitions. [2020-10-13 13:39:38,415 INFO L78 Accepts]: Start accepts. Automaton has 237869 states and 342868 transitions. Word has length 104 [2020-10-13 13:39:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:38,415 INFO L479 AbstractCegarLoop]: Abstraction has 237869 states and 342868 transitions. [2020-10-13 13:39:38,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 237869 states and 342868 transitions. [2020-10-13 13:39:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 13:39:38,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:38,417 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] [2020-10-13 13:39:38,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:39:38,417 INFO L427 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1943990655, now seen corresponding path program 1 times [2020-10-13 13:39:38,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:38,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494580016] [2020-10-13 13:39:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:38,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:38,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking...