/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:03:10,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:03:10,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:03:10,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:03:10,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:03:10,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:03:10,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:03:10,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:03:10,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:03:10,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:03:10,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:03:10,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:03:10,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:03:10,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:03:10,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:03:10,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:03:10,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:03:10,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:03:10,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:03:10,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:03:10,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:03:10,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:03:10,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:03:10,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:03:10,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:03:10,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:03:10,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:03:10,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:03:10,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:03:10,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:03:10,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:03:10,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:03:10,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:03:10,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:03:10,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:03:10,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:03:10,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:03:10,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:03:10,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:03:10,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:03:10,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:03:10,407 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 [2020-10-12 19:03:10,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:03:10,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:03:10,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:03:10,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:03:10,451 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:03:10,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:03:10,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:03:10,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:03:10,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:03:10,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:03:10,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:03:10,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:03:10,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:03:10,454 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:03:10,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:03:10,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:03:10,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:03:10,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:03:10,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:03:10,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:03:10,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:03:10,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:03:10,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:03:10,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:03:10,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:03:10,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:03:10,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:03:10,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:03:10,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:03:10,457 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:03:10,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:03:10,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:03:10,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:03:10,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:03:10,745 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:03:10,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-12 19:03:10,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14262557/3080950463804732b7cfc4b8e9569779/FLAGa28cc2989 [2020-10-12 19:03:11,395 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:03:11,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-12 19:03:11,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14262557/3080950463804732b7cfc4b8e9569779/FLAGa28cc2989 [2020-10-12 19:03:11,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14262557/3080950463804732b7cfc4b8e9569779 [2020-10-12 19:03:11,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:03:11,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:03:11,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:03:11,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:03:11,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:03:11,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:03:11" (1/1) ... [2020-10-12 19:03:11,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6e054d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:11, skipping insertion in model container [2020-10-12 19:03:11,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:03:11" (1/1) ... [2020-10-12 19:03:11,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:03:11,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:03:12,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:03:12,302 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:03:12,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:03:12,448 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:03:12,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12 WrapperNode [2020-10-12 19:03:12,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:03:12,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:03:12,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:03:12,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:03:12,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12" (1/1) ... [2020-10-12 19:03:12,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12" (1/1) ... [2020-10-12 19:03:12,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12" (1/1) ... [2020-10-12 19:03:12,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12" (1/1) ... [2020-10-12 19:03:12,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12" (1/1) ... [2020-10-12 19:03:12,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12" (1/1) ... [2020-10-12 19:03:12,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12" (1/1) ... [2020-10-12 19:03:12,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:03:12,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:03:12,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:03:12,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:03:12,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12" (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 [2020-10-12 19:03:12,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:03:12,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:03:12,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:03:12,684 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-12 19:03:12,684 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-12 19:03:12,684 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-12 19:03:12,684 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-12 19:03:12,685 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-12 19:03:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-12 19:03:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-12 19:03:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:03:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-12 19:03:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:03:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:03:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:03:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:03:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:03:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:03:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:03:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:03:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:03:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:03:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:03:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:03:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:03:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:03:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:03:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:03:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:03:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:03:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:03:14,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:03:14,605 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 19:03:14,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:03:14 BoogieIcfgContainer [2020-10-12 19:03:14,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:03:14,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:03:14,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:03:14,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:03:14,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:03:11" (1/3) ... [2020-10-12 19:03:14,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3002258d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:03:14, skipping insertion in model container [2020-10-12 19:03:14,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:03:12" (2/3) ... [2020-10-12 19:03:14,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3002258d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:03:14, skipping insertion in model container [2020-10-12 19:03:14,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:03:14" (3/3) ... [2020-10-12 19:03:14,622 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-12 19:03:14,632 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:03:14,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:03:14,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:03:14,679 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:03:14,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:03:14,680 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:03:14,680 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:03:14,680 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:03:14,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:03:14,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:03:14,681 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:03:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states. [2020-10-12 19:03:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-12 19:03:14,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:03:14,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:03:14,739 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:03:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:03:14,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1128167628, now seen corresponding path program 1 times [2020-10-12 19:03:14,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:03:14,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922853998] [2020-10-12 19:03:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:03:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:16,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:16,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 19:03:16,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:16,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-12 19:03:16,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:16,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-12 19:03:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:16,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:03:17,316 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:03:17,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:03:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:17,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:17,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:03:17,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:17,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 19:03:17,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:17,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:17,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:03:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:17,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:17,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 19:03:17,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 19:03:17,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 19:03:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:17,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:17,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:03:17,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:03:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 19:03:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:17,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-12 19:03:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:17,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:17,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:17,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:03:17,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:17,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 19:03:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:17,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:17,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:17,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:17,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:03:17,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-12 19:03:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:17,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:17,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:17,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:17,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:03:17,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:17,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 19:03:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:17,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:17,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:17,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:03:17,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:17,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-12 19:03:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:17,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:17,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:17,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:03:17,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-12 19:03:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:17,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:17,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:03:17,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:17,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:03:17,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:17,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:03:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:17,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:03:18,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922853998] [2020-10-12 19:03:18,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:03:18,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:03:18,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886668347] [2020-10-12 19:03:18,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:03:18,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:03:18,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:03:18,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:03:18,029 INFO L87 Difference]: Start difference. First operand 772 states. Second operand 8 states. [2020-10-12 19:03:20,749 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:21,402 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:21,998 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:22,640 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:23,302 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:03:24,260 INFO L93 Difference]: Finished difference Result 1044 states and 1849 transitions. [2020-10-12 19:03:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:03:24,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-12 19:03:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:03:24,303 INFO L225 Difference]: With dead ends: 1044 [2020-10-12 19:03:24,303 INFO L226 Difference]: Without dead ends: 832 [2020-10-12 19:03:24,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:03:24,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-12 19:03:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 767. [2020-10-12 19:03:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-12 19:03:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1386 transitions. [2020-10-12 19:03:24,554 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1386 transitions. Word has length 187 [2020-10-12 19:03:24,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:03:24,555 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 1386 transitions. [2020-10-12 19:03:24,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:03:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1386 transitions. [2020-10-12 19:03:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-12 19:03:24,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:03:24,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:03:24,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:03:24,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:03:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:03:24,561 INFO L82 PathProgramCache]: Analyzing trace with hash 410172402, now seen corresponding path program 1 times [2020-10-12 19:03:24,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:03:24,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722397611] [2020-10-12 19:03:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:03:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:26,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:26,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 19:03:26,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2292 [2020-10-12 19:03:26,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:03:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-12 19:03:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 19:03:26,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:27,973 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:03:27,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:03:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:28,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:28,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:03:28,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 19:03:28,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:28,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:03:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:28,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:28,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 19:03:28,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:28,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-12 19:03:28,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 19:03:28,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 19:03:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:28,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:28,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:03:28,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:03:28,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:28,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:28,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 19:03:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:03:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 19:03:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-12 19:03:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:28,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:28,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:28,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:03:28,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 19:03:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:28,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:28,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:28,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:03:28,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:29,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-12 19:03:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:29,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:29,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:29,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:29,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:29,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:03:29,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:29,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 19:03:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:29,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:29,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:29,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:03:29,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:29,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:29,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-12 19:03:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:29,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:29,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:29,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:29,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:03:29,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:29,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:29,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:29,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-12 19:03:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:29,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:29,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:03:29,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:29,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:03:29,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:03:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:29,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 19:03:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:03:29,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722397611] [2020-10-12 19:03:29,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:03:29,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:03:29,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628563850] [2020-10-12 19:03:29,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:03:29,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:03:29,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:03:29,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:03:29,354 INFO L87 Difference]: Start difference. First operand 767 states and 1386 transitions. Second operand 14 states. [2020-10-12 19:03:37,206 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:03:37,946 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-12 19:03:38,773 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2020-10-12 19:03:39,490 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:03:40,595 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:41,354 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:42,117 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:42,896 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:43,602 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:03:44,483 INFO L93 Difference]: Finished difference Result 1042 states and 1841 transitions. [2020-10-12 19:03:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 19:03:44,484 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 187 [2020-10-12 19:03:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:03:44,491 INFO L225 Difference]: With dead ends: 1042 [2020-10-12 19:03:44,491 INFO L226 Difference]: Without dead ends: 832 [2020-10-12 19:03:44,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:03:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-12 19:03:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 767. [2020-10-12 19:03:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-12 19:03:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1321 transitions. [2020-10-12 19:03:44,611 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1321 transitions. Word has length 187 [2020-10-12 19:03:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:03:44,611 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 1321 transitions. [2020-10-12 19:03:44,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:03:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1321 transitions. [2020-10-12 19:03:44,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-12 19:03:44,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:03:44,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:03:44,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:03:44,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:03:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:03:44,616 INFO L82 PathProgramCache]: Analyzing trace with hash 534018384, now seen corresponding path program 1 times [2020-10-12 19:03:44,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:03:44,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919457668] [2020-10-12 19:03:44,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:03:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:44,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:46,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:49,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:49,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 19:03:49,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:03:49,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 19:03:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 19:03:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-12 19:03:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 19:03:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:50,523 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:03:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:03:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:50,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:03:50,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:03:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:50,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:03:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:51,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:51,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:03:51,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:51,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-10-12 19:03:51,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:51,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:03:51,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-12 19:03:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:51,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:03:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:51,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:51,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:03:51,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:51,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:03:51,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:03:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:51,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:03:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:51,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:51,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:51,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:51,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 19:03:51,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:03:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:51,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-12 19:03:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:51,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:51,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:51,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:51,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 19:03:51,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:03:51,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 19:03:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:52,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:52,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:52,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:52,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 19:03:52,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:03:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:52,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-12 19:03:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:52,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:52,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:52,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:52,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 19:03:52,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:03:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:52,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-12 19:03:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:52,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:52,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:52,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:03:52,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:03:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:52,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-12 19:03:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:52,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:52,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:52,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:03:52,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:52,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:03:52,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 19:03:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 19:03:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:03:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:03:52,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919457668] [2020-10-12 19:03:52,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:03:52,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-12 19:03:52,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268592603] [2020-10-12 19:03:52,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:03:52,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:03:52,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:03:52,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:03:52,569 INFO L87 Difference]: Start difference. First operand 767 states and 1321 transitions. Second operand 19 states. [2020-10-12 19:03:53,267 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:03:59,976 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:04:00,606 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:04:01,244 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-12 19:04:01,904 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-12 19:04:02,380 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:02,911 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:04:03,213 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:03,896 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-12 19:04:04,213 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:04:04,472 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:05,386 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:04:05,600 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:04:05,901 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:04:06,234 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:04:06,476 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:07,656 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:04:07,877 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:08,119 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:04:08,354 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:08,619 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:08,985 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:04:09,218 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:10,665 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:04:10,895 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-12 19:04:11,143 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:04:11,385 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:04:11,641 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:04:11,890 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-12 19:04:12,171 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-12 19:04:12,550 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:04:14,159 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:04:14,397 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:04:14,650 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:04:14,908 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:04:15,576 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:04:16,218 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-12 19:04:16,875 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:04:17,572 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2020-10-12 19:04:18,256 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2020-10-12 19:04:20,537 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:20,776 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:21,067 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:21,328 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:04:21,594 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-12 19:04:21,839 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:04:22,087 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:04:22,345 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:22,615 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:22,885 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:25,045 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-12 19:04:25,279 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:04:25,621 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 19:04:25,922 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:26,242 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:26,565 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:26,958 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:04:27,252 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:04:27,563 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:04:27,874 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:30,389 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:30,716 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:31,008 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:31,260 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:31,590 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:04:31,928 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-12 19:04:32,441 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:32,753 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:33,070 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:35,383 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:35,699 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:04:36,028 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-12 19:04:36,320 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:36,596 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:04:36,925 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:37,511 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:37,825 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:40,105 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-12 19:04:40,429 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 19:04:40,767 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 19:04:41,122 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-12 19:04:41,420 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:41,925 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 192 [2020-10-12 19:04:42,638 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 19:04:55,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:04:55,501 INFO L93 Difference]: Finished difference Result 3998 states and 6869 transitions. [2020-10-12 19:04:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2020-10-12 19:04:55,502 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 251 [2020-10-12 19:04:55,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:04:55,543 INFO L225 Difference]: With dead ends: 3998 [2020-10-12 19:04:55,543 INFO L226 Difference]: Without dead ends: 3794 [2020-10-12 19:04:55,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6731 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=3399, Invalid=13893, Unknown=0, NotChecked=0, Total=17292 [2020-10-12 19:04:55,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2020-10-12 19:04:55,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 2779. [2020-10-12 19:04:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2020-10-12 19:04:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 4652 transitions. [2020-10-12 19:04:55,939 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 4652 transitions. Word has length 251 [2020-10-12 19:04:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:04:55,940 INFO L479 AbstractCegarLoop]: Abstraction has 2779 states and 4652 transitions. [2020-10-12 19:04:55,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 19:04:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 4652 transitions. [2020-10-12 19:04:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-12 19:04:55,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:04:55,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:04:55,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:04:55,947 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:04:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:04:55,948 INFO L82 PathProgramCache]: Analyzing trace with hash 908535563, now seen corresponding path program 1 times [2020-10-12 19:04:55,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:04:55,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060854694] [2020-10-12 19:04:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:04:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:01,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:01,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 19:05:01,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:05:01,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-12 19:05:01,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:05:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-12 19:05:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 19:05:01,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:02,161 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:05:02,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:05:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:02,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:02,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:05:02,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:02,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:05:02,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:05:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:05:02,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:02,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:05:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:02,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:02,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:05:02,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-12 19:05:02,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:05:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-12 19:05:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:05:02,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:05:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:02,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:05:02,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:05:02,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:05:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:05:02,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:05:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:02,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:02,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:02,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:02,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:05:02,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:02,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:05:02,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:05:02,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:05:02,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:03,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-12 19:05:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:03,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:03,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:03,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:03,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:05:03,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:05:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:03,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 19:05:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:03,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:03,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:03,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:05:03,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:05:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-12 19:05:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:03,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:03,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:03,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:03,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:03,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:05:03,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:03,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:05:03,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:03,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-12 19:05:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:03,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:03,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:03,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:05:03,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:05:03,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-12 19:05:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:03,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:03,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:03,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:05:03,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-12 19:05:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 19:05:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:05:03,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060854694] [2020-10-12 19:05:03,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:05:03,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:05:03,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196261145] [2020-10-12 19:05:03,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:05:03,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:05:03,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:05:03,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:05:03,467 INFO L87 Difference]: Start difference. First operand 2779 states and 4652 transitions. Second operand 12 states. [2020-10-12 19:05:04,383 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:05:11,069 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:05:11,673 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-12 19:05:12,188 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:12,401 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:12,688 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:13,217 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:13,434 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:05:13,746 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:14,688 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:14,936 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:05:15,282 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:16,240 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:16,481 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:05:16,821 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:17,756 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:17,997 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:05:19,486 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:05:20,119 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-12 19:05:21,039 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:05:21,317 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:05:21,769 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-10-12 19:05:22,273 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-12 19:05:23,435 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:23,657 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:05:23,932 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:05:24,898 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:25,169 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:05:26,077 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:26,349 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:05:27,274 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:27,545 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:05:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:05:28,559 INFO L93 Difference]: Finished difference Result 10998 states and 18329 transitions. [2020-10-12 19:05:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 19:05:28,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 252 [2020-10-12 19:05:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:05:28,602 INFO L225 Difference]: With dead ends: 10998 [2020-10-12 19:05:28,603 INFO L226 Difference]: Without dead ends: 8782 [2020-10-12 19:05:28,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=426, Invalid=1554, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 19:05:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8782 states. [2020-10-12 19:05:29,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8782 to 6748. [2020-10-12 19:05:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6748 states. [2020-10-12 19:05:29,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 11201 transitions. [2020-10-12 19:05:29,161 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 11201 transitions. Word has length 252 [2020-10-12 19:05:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:05:29,162 INFO L479 AbstractCegarLoop]: Abstraction has 6748 states and 11201 transitions. [2020-10-12 19:05:29,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:05:29,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 11201 transitions. [2020-10-12 19:05:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-12 19:05:29,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:05:29,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:05:29,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:05:29,170 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:05:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:05:29,170 INFO L82 PathProgramCache]: Analyzing trace with hash -418018713, now seen corresponding path program 1 times [2020-10-12 19:05:29,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:05:29,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418124332] [2020-10-12 19:05:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:05:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:34,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:34,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-12 19:05:34,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:05:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:05:34,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:05:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-12 19:05:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 19:05:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,102 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:05:35,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:05:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:35,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:35,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:05:35,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:35,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:05:35,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:05:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:05:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:05:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:35,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:35,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:35,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:05:35,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-12 19:05:35,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:05:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-12 19:05:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:05:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:35,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:35,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:35,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:05:35,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:05:35,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:05:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:05:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:35,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:35,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:35,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:35,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:05:35,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:05:35,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-12 19:05:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:35,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:35,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:35,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:35,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:05:35,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:05:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:05:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:05:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 19:05:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:35,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:35,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:35,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:05:35,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:05:35,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-12 19:05:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:35,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:35,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:35,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:35,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:05:35,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:05:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-12 19:05:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:35,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:35,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:05:35,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:05:35,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:05:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:05:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-12 19:05:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:05:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:05:35,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:05:35,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 19:05:35,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:05:35,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:05:35,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:05:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:05:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:05:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 19:05:35,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:05:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:05:35,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418124332] [2020-10-12 19:05:35,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:05:35,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:05:35,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221212356] [2020-10-12 19:05:35,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:05:35,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:05:35,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:05:35,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:05:35,948 INFO L87 Difference]: Start difference. First operand 6748 states and 11201 transitions. Second operand 12 states. [2020-10-12 19:05:36,644 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-12 19:05:43,408 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:05:43,832 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:05:44,455 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:05:45,082 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:45,308 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:45,542 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:05:46,204 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:46,427 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:05:46,765 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:05:47,859 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:48,105 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:05:48,463 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:05:49,539 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:49,786 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:05:51,378 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:05:52,026 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-12 19:05:53,061 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:05:53,369 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:53,624 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:05:53,935 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:05:54,770 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:05:55,402 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:05:55,707 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-12 19:05:56,128 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:05:57,430 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:57,707 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:05:57,943 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:05:59,104 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:05:59,401 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:06:00,640 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:00,939 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:06:02,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:06:02,517 INFO L93 Difference]: Finished difference Result 31847 states and 52888 transitions. [2020-10-12 19:06:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 19:06:02,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 253 [2020-10-12 19:06:02,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:06:02,618 INFO L225 Difference]: With dead ends: 31847 [2020-10-12 19:06:02,618 INFO L226 Difference]: Without dead ends: 25662 [2020-10-12 19:06:02,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 19:06:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25662 states. [2020-10-12 19:06:03,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25662 to 19444. [2020-10-12 19:06:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19444 states. [2020-10-12 19:06:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19444 states to 19444 states and 32102 transitions. [2020-10-12 19:06:03,815 INFO L78 Accepts]: Start accepts. Automaton has 19444 states and 32102 transitions. Word has length 253 [2020-10-12 19:06:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:06:03,816 INFO L479 AbstractCegarLoop]: Abstraction has 19444 states and 32102 transitions. [2020-10-12 19:06:03,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:06:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 19444 states and 32102 transitions. [2020-10-12 19:06:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 19:06:03,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:06:03,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:06:03,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:06:03,827 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:06:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:06:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1356786754, now seen corresponding path program 1 times [2020-10-12 19:06:03,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:06:03,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041676797] [2020-10-12 19:06:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:06:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:04,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:05,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:08,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:08,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-12 19:06:08,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:06:08,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 19:06:08,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:06:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-10-12 19:06:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 19:06:08,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:09,740 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:06:09,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:06:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:09,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:09,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:09,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:06:09,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:06:09,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:06:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:06:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:09,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:06:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:09,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:10,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:10,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:06:10,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:10,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 19:06:10,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:06:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-12 19:06:10,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:10,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:06:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:10,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:10,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:10,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:06:10,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 19:06:10,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:06:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:06:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:10,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:10,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:10,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:06:10,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:06:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-12 19:06:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:10,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:10,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:10,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:06:10,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:06:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 19:06:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:10,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:10,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:10,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:06:10,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:06:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:06:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:06:10,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:10,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-12 19:06:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:10,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:10,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:10,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:06:10,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:06:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-12 19:06:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:10,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:10,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:10,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:06:10,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:10,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:06:10,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:10,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-12 19:06:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:10,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:10,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 19:06:10,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:06:10,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 19:06:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 19:06:10,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:06:10,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041676797] [2020-10-12 19:06:10,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:06:10,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:06:10,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045132655] [2020-10-12 19:06:10,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:06:10,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:06:10,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:06:10,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:06:10,554 INFO L87 Difference]: Start difference. First operand 19444 states and 32102 transitions. Second operand 12 states. [2020-10-12 19:06:11,232 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:06:17,523 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:06:17,956 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:18,572 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:19,442 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 188 [2020-10-12 19:06:20,129 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:06:20,348 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:20,570 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:21,215 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:06:21,439 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:06:21,780 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:22,832 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:06:23,076 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:06:24,767 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:06:25,413 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-12 19:06:26,320 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:06:26,716 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:26,944 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:06:27,281 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:06:27,915 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:06:28,767 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:29,057 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:06:29,441 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:06:30,263 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-12 19:06:31,111 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-12 19:06:31,653 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 192 [2020-10-12 19:06:32,118 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 19:06:33,329 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:33,605 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:06:33,841 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:06:35,062 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:06:35,352 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:06:37,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:06:37,861 INFO L93 Difference]: Finished difference Result 106862 states and 177010 transitions. [2020-10-12 19:06:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 19:06:37,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-10-12 19:06:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:06:38,162 INFO L225 Difference]: With dead ends: 106862 [2020-10-12 19:06:38,162 INFO L226 Difference]: Without dead ends: 87981 [2020-10-12 19:06:38,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=426, Invalid=1554, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 19:06:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87981 states. [2020-10-12 19:06:42,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87981 to 66331. [2020-10-12 19:06:42,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66331 states. [2020-10-12 19:06:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66331 states to 66331 states and 109133 transitions. [2020-10-12 19:06:42,365 INFO L78 Accepts]: Start accepts. Automaton has 66331 states and 109133 transitions. Word has length 254 [2020-10-12 19:06:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:06:42,366 INFO L479 AbstractCegarLoop]: Abstraction has 66331 states and 109133 transitions. [2020-10-12 19:06:42,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:06:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 66331 states and 109133 transitions. [2020-10-12 19:06:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-12 19:06:42,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:06:42,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:06:42,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:06:42,379 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:06:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:06:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash 489496446, now seen corresponding path program 1 times [2020-10-12 19:06:42,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:06:42,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121196927] [2020-10-12 19:06:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:06:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:42,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:42,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:43,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:47,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:47,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-12 19:06:47,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:06:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:06:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:06:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-12 19:06:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 19:06:47,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,184 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:06:48,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:06:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:48,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:48,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:06:48,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:48,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:06:48,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:06:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:06:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:06:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:48,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:48,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:48,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:06:48,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:48,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-12 19:06:48,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:48,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:06:48,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:48,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 19:06:48,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:06:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:48,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:48,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:06:48,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:06:48,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:06:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:06:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:48,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:48,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:48,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:06:48,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:06:48,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-12 19:06:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:48,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:48,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:48,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:48,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:06:48,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:06:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 19:06:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:48,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:48,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:48,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:48,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:48,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:06:48,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:48,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:48,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:06:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-12 19:06:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:48,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:48,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:48,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:48,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:06:48,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:06:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:06:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:06:48,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-12 19:06:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:48,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:48,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:06:48,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:06:48,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:06:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:06:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-12 19:06:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:06:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:06:48,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:06:48,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 19:06:48,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:06:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:06:48,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:06:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:06:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:06:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 19:06:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:06:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:06:48,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121196927] [2020-10-12 19:06:48,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:06:48,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:06:48,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674999461] [2020-10-12 19:06:48,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:06:48,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:06:48,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:06:48,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:06:48,981 INFO L87 Difference]: Start difference. First operand 66331 states and 109133 transitions. Second operand 12 states. [2020-10-12 19:06:49,664 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 373