/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:23:38,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:23:38,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:23:38,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:23:38,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:23:38,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:23:38,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:23:38,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:23:38,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:23:38,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:23:38,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:23:38,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:23:38,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:23:38,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:23:38,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:23:38,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:23:38,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:23:38,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:23:38,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:23:38,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:23:38,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:23:38,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:23:38,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:23:38,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:23:38,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:23:38,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:23:38,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:23:38,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:23:38,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:23:38,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:23:38,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:23:38,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:23:38,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:23:38,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:23:38,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:23:38,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:23:38,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:23:38,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:23:38,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:23:38,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:23:38,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:23:38,692 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 [2020-10-27 04:23:38,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:23:38,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:23:38,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:23:38,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:23:38,750 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:23:38,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:23:38,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:23:38,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:23:38,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:23:38,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:23:38,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:23:38,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:23:38,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:23:38,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:23:38,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:23:38,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:23:38,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:23:38,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:23:38,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:23:38,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:23:38,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:23:38,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:23:38,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:23:38,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:23:38,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:23:38,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:23:38,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:23:38,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:23:38,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:23:38,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:23:39,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:23:39,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:23:39,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:23:39,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:23:39,234 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:23:39,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-27 04:23:39,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7bcf6285/454df30b3a664083abc531cea61df733/FLAGc2f9864b0 [2020-10-27 04:23:40,123 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:23:40,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-27 04:23:40,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7bcf6285/454df30b3a664083abc531cea61df733/FLAGc2f9864b0 [2020-10-27 04:23:40,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7bcf6285/454df30b3a664083abc531cea61df733 [2020-10-27 04:23:40,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:23:40,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:23:40,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:23:40,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:23:40,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:23:40,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:23:40" (1/1) ... [2020-10-27 04:23:40,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e28cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:40, skipping insertion in model container [2020-10-27 04:23:40,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:23:40" (1/1) ... [2020-10-27 04:23:40,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:23:40,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:23:40,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:23:40,984 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:23:41,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:23:41,156 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:23:41,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41 WrapperNode [2020-10-27 04:23:41,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:23:41,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:23:41,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:23:41,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:23:41,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41" (1/1) ... [2020-10-27 04:23:41,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41" (1/1) ... [2020-10-27 04:23:41,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41" (1/1) ... [2020-10-27 04:23:41,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41" (1/1) ... [2020-10-27 04:23:41,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41" (1/1) ... [2020-10-27 04:23:41,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41" (1/1) ... [2020-10-27 04:23:41,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41" (1/1) ... [2020-10-27 04:23:41,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:23:41,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:23:41,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:23:41,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:23:41,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41" (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 [2020-10-27 04:23:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:23:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:23:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:23:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:23:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:23:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:23:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:23:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:23:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 04:23:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:23:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:23:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:23:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:23:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:23:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:23:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:23:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:23:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:23:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:23:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:23:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:23:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:23:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:23:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:23:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:23:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:23:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:23:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 04:23:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:23:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:23:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:23:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:23:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:23:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:23:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:23:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:23:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:23:44,432 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:23:44,432 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:23:44,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:23:44 BoogieIcfgContainer [2020-10-27 04:23:44,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:23:44,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:23:44,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:23:44,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:23:44,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:23:40" (1/3) ... [2020-10-27 04:23:44,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e87bedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:23:44, skipping insertion in model container [2020-10-27 04:23:44,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:23:41" (2/3) ... [2020-10-27 04:23:44,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e87bedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:23:44, skipping insertion in model container [2020-10-27 04:23:44,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:23:44" (3/3) ... [2020-10-27 04:23:44,445 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-27 04:23:44,459 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:23:44,465 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:23:44,478 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:23:44,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:23:44,525 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:23:44,525 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:23:44,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:23:44,525 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:23:44,525 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:23:44,525 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:23:44,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:23:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states. [2020-10-27 04:23:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-27 04:23:44,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:23:44,604 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] [2020-10-27 04:23:44,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:23:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:23:44,611 INFO L82 PathProgramCache]: Analyzing trace with hash -966148239, now seen corresponding path program 1 times [2020-10-27 04:23:44,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:23:44,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769508557] [2020-10-27 04:23:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:23:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:45,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:46,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:46,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 04:23:46,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:46,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-27 04:23:46,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 04:23:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:23:47,608 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:23:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:23:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:47,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:47,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:23:47,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:47,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 04:23:47,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:47,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:47,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:23:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:47,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:47,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:23:47,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 04:23:47,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:47,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:23:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:47,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:47,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:23:47,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:23:47,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:23:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:23:48,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:23:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:23:48,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:23:48,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 04:23:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:23:48,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-27 04:23:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:23:48,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-27 04:23:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:23:48,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-27 04:23:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:23:48,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 04:23:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:23:48,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:23:48,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769508557] [2020-10-27 04:23:48,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:23:48,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:23:48,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578498806] [2020-10-27 04:23:48,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:23:48,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:23:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:23:48,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:23:48,490 INFO L87 Difference]: Start difference. First operand 742 states. Second operand 8 states. [2020-10-27 04:23:51,547 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:52,206 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:52,894 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:53,445 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:54,013 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:54,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:23:54,807 INFO L93 Difference]: Finished difference Result 976 states and 1721 transitions. [2020-10-27 04:23:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:23:54,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-27 04:23:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:23:54,843 INFO L225 Difference]: With dead ends: 976 [2020-10-27 04:23:54,843 INFO L226 Difference]: Without dead ends: 784 [2020-10-27 04:23:54,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:23:54,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-27 04:23:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 734. [2020-10-27 04:23:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-27 04:23:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1328 transitions. [2020-10-27 04:23:55,102 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1328 transitions. Word has length 183 [2020-10-27 04:23:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:23:55,103 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1328 transitions. [2020-10-27 04:23:55,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:23:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1328 transitions. [2020-10-27 04:23:55,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-27 04:23:55,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:23:55,108 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] [2020-10-27 04:23:55,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:23:55,109 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:23:55,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:23:55,110 INFO L82 PathProgramCache]: Analyzing trace with hash 973013807, now seen corresponding path program 1 times [2020-10-27 04:23:55,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:23:55,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487276664] [2020-10-27 04:23:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:23:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:57,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:57,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 04:23:57,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:57,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2784 [2020-10-27 04:23:57,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:23:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 04:23:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:23:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:59,230 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:23:59,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:23:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:59,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:59,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:59,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:23:59,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:23:59,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:59,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:59,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:23:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:59,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:59,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:59,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:23:59,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:59,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-27 04:23:59,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:23:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 04:23:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:24:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:00,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:00,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:00,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:24:00,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:00,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:24:00,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:24:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:24:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:24:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:00,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:24:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:00,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:00,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:00,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:00,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:24:00,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:00,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:00,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 04:24:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:00,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:24:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-27 04:24:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:00,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:24:00,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-27 04:24:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:00,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:00,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:00,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:24:00,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:00,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-27 04:24:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:00,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:00,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:00,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:24:00,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:00,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 04:24:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:00,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:00,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:00,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:00,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:24:00,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:00,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:00,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:00,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:00,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:24:00,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487276664] [2020-10-27 04:24:00,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:24:00,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:24:00,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311610005] [2020-10-27 04:24:00,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:24:00,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:24:00,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:24:00,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:24:00,555 INFO L87 Difference]: Start difference. First operand 734 states and 1328 transitions. Second operand 14 states. [2020-10-27 04:24:10,383 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-27 04:24:11,458 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification that was a NOOP. DAG size: 390 [2020-10-27 04:24:12,695 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-10-27 04:24:13,772 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:24:15,123 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:15,892 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:16,780 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:17,622 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:18,473 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:24:19,936 INFO L93 Difference]: Finished difference Result 977 states and 1723 transitions. [2020-10-27 04:24:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:24:19,936 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2020-10-27 04:24:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:24:19,944 INFO L225 Difference]: With dead ends: 977 [2020-10-27 04:24:19,944 INFO L226 Difference]: Without dead ends: 795 [2020-10-27 04:24:19,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:24:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-10-27 04:24:20,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 734. [2020-10-27 04:24:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-27 04:24:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1268 transitions. [2020-10-27 04:24:20,117 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1268 transitions. Word has length 183 [2020-10-27 04:24:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:24:20,118 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1268 transitions. [2020-10-27 04:24:20,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:24:20,121 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1268 transitions. [2020-10-27 04:24:20,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-27 04:24:20,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:24:20,126 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] [2020-10-27 04:24:20,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:24:20,127 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:24:20,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:24:20,127 INFO L82 PathProgramCache]: Analyzing trace with hash -929784361, now seen corresponding path program 1 times [2020-10-27 04:24:20,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:24:20,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491267115] [2020-10-27 04:24:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:24:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:25,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:25,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-27 04:24:25,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:24:25,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 04:24:25,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:24:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 04:24:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:24:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:24:26,332 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:24:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:24:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:26,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:26,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:24:26,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:24:26,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:24:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:26,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:24:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:26,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:26,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:24:26,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-27 04:24:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:24:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:24:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 04:24:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:26,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:24:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:24:26,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:24:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:24:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:24:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:24:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:24:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:26,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:26,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:24:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:24:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:24:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:24:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:26,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 04:24:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:27,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:27,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:27,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:27,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:24:27,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:27,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:27,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 04:24:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:27,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:27,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:27,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:24:27,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:27,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:27,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-27 04:24:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:27,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:27,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:24:27,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:27,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:24:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:27,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:27,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:27,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:24:27,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:27,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:24:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:27,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:27,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:27,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:27,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:27,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:24:27,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:24:27,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491267115] [2020-10-27 04:24:27,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:24:27,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:24:27,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211659128] [2020-10-27 04:24:27,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:24:27,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:24:27,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:24:27,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:24:27,389 INFO L87 Difference]: Start difference. First operand 734 states and 1268 transitions. Second operand 11 states. [2020-10-27 04:24:28,522 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 387 [2020-10-27 04:24:35,170 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:35,583 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 04:24:36,136 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 04:24:36,396 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:37,272 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 04:24:37,559 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:38,462 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 04:24:38,769 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:39,700 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 04:24:40,001 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:42,117 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-27 04:24:42,812 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:24:43,141 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:24:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:24:43,232 INFO L93 Difference]: Finished difference Result 1185 states and 2002 transitions. [2020-10-27 04:24:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:24:43,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 242 [2020-10-27 04:24:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:24:43,241 INFO L225 Difference]: With dead ends: 1185 [2020-10-27 04:24:43,241 INFO L226 Difference]: Without dead ends: 1009 [2020-10-27 04:24:43,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:24:43,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-27 04:24:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 896. [2020-10-27 04:24:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-27 04:24:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1529 transitions. [2020-10-27 04:24:43,427 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1529 transitions. Word has length 242 [2020-10-27 04:24:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:24:43,428 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1529 transitions. [2020-10-27 04:24:43,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:24:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1529 transitions. [2020-10-27 04:24:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 04:24:43,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:24:43,435 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] [2020-10-27 04:24:43,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:24:43,436 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:24:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:24:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1954321531, now seen corresponding path program 1 times [2020-10-27 04:24:43,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:24:43,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608300671] [2020-10-27 04:24:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:24:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:43,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:43,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:44,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:45,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:48,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:48,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-27 04:24:48,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:24:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:24:48,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:24:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:24:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-27 04:24:48,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:49,733 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:24:49,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:24:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:49,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:24:49,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:24:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:24:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:49,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:24:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:50,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:50,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:24:50,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:50,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-27 04:24:50,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:50,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:24:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:24:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:24:50,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:50,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:24:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:50,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:50,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:24:50,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:24:50,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:24:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:24:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:24:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:50,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:24:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:50,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:50,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:24:50,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:24:50,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:24:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:24:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:24:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:50,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-27 04:24:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:50,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:50,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:50,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:24:50,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:50,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:24:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:50,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:50,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:50,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:24:50,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:50,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 04:24:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:50,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:50,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:50,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:50,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:24:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:24:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 04:24:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:50,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:50,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:50,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:50,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:24:50,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:50,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:50,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:50,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:50,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 04:24:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:50,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:50,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:50,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:50,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:24:50,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:50,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:50,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:24:51,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608300671] [2020-10-27 04:24:51,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:24:51,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:24:51,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71516902] [2020-10-27 04:24:51,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:24:51,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:24:51,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:24:51,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:24:51,225 INFO L87 Difference]: Start difference. First operand 896 states and 1529 transitions. Second operand 11 states. [2020-10-27 04:24:52,287 WARN L193 SmtUtils]: Spent 978.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-27 04:24:53,344 WARN L193 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-10-27 04:24:54,425 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 04:24:57,796 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-27 04:25:15,859 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-27 04:25:16,344 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:25:16,703 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:25:17,375 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:25:17,970 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:25:18,496 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:25:18,774 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:25:19,573 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:25:20,242 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:25:20,512 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:25:21,243 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:25:21,899 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:25:22,185 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:25:22,922 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:25:23,609 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:25:23,895 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:25:25,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:25:25,661 INFO L93 Difference]: Finished difference Result 3518 states and 6003 transitions. [2020-10-27 04:25:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:25:25,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-27 04:25:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:25:25,678 INFO L225 Difference]: With dead ends: 3518 [2020-10-27 04:25:25,678 INFO L226 Difference]: Without dead ends: 2681 [2020-10-27 04:25:25,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:25:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2020-10-27 04:25:26,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2438. [2020-10-27 04:25:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2438 states. [2020-10-27 04:25:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 4160 transitions. [2020-10-27 04:25:26,195 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 4160 transitions. Word has length 246 [2020-10-27 04:25:26,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:25:26,195 INFO L481 AbstractCegarLoop]: Abstraction has 2438 states and 4160 transitions. [2020-10-27 04:25:26,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:25:26,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 4160 transitions. [2020-10-27 04:25:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 04:25:26,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:25:26,205 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] [2020-10-27 04:25:26,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:25:26,206 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:25:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:25:26,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1282874302, now seen corresponding path program 1 times [2020-10-27 04:25:26,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:25:26,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257297958] [2020-10-27 04:25:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:25:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:27,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:28,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:31,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:31,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-27 04:25:31,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:25:31,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:25:31,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:25:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:25:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-27 04:25:31,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:32,415 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:25:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:25:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:32,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:32,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:25:32,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:32,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 04:25:32,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:32,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:32,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:25:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:32,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:32,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:32,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:25:32,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:32,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-27 04:25:32,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:25:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:25:32,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:25:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:33,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:33,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:25:33,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:25:33,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:25:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:25:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:33,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:33,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:25:33,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:25:33,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:25:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:25:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:33,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-27 04:25:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:33,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:33,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:33,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:33,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:33,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:25:33,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:33,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:25:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:33,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:33,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:33,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:33,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:25:33,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:33,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:33,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:33,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:33,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:33,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 04:25:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:33,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:33,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:33,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:33,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:25:33,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 04:25:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:33,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:33,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:33,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:25:33,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:33,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 04:25:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:33,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:33,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:33,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:33,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:25:33,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:25:33,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257297958] [2020-10-27 04:25:33,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:25:33,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:25:33,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114984775] [2020-10-27 04:25:33,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:25:33,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:25:33,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:25:33,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:25:33,755 INFO L87 Difference]: Start difference. First operand 2438 states and 4160 transitions. Second operand 11 states. [2020-10-27 04:25:34,871 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-27 04:25:36,018 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-27 04:25:37,814 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 04:25:40,090 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-27 04:26:00,790 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-27 04:26:01,338 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:26:01,752 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:26:02,360 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:26:03,562 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:26:03,947 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:26:04,470 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:26:05,556 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:26:05,963 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:26:06,426 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:26:07,305 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:26:07,711 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:26:08,174 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:26:08,946 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:26:09,371 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:26:09,946 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:26:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:26:11,834 INFO L93 Difference]: Finished difference Result 9388 states and 15983 transitions. [2020-10-27 04:26:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:26:11,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-27 04:26:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:26:11,877 INFO L225 Difference]: With dead ends: 9388 [2020-10-27 04:26:11,878 INFO L226 Difference]: Without dead ends: 7107 [2020-10-27 04:26:11,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:26:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7107 states. [2020-10-27 04:26:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7107 to 6609. [2020-10-27 04:26:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6609 states. [2020-10-27 04:26:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6609 states to 6609 states and 11230 transitions. [2020-10-27 04:26:13,354 INFO L78 Accepts]: Start accepts. Automaton has 6609 states and 11230 transitions. Word has length 246 [2020-10-27 04:26:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:26:13,354 INFO L481 AbstractCegarLoop]: Abstraction has 6609 states and 11230 transitions. [2020-10-27 04:26:13,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:26:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6609 states and 11230 transitions. [2020-10-27 04:26:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-27 04:26:13,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:26:13,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:26:13,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:26:13,380 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:26:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:26:13,380 INFO L82 PathProgramCache]: Analyzing trace with hash 440350761, now seen corresponding path program 1 times [2020-10-27 04:26:13,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:26:13,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778899069] [2020-10-27 04:26:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:26:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:15,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:15,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:16,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:18,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 04:26:18,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:26:18,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:26:18,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:18,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:26:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:26:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-27 04:26:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:19,628 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:26:19,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:26:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:19,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:19,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:26:19,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 04:26:19,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:26:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:26:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:20,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:20,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:26:20,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-27 04:26:20,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:26:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 04:26:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:20,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:26:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:20,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:20,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:20,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:26:20,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:26:20,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:26:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:26:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:20,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:20,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:26:20,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:26:20,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:26:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:26:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:26:20,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:20,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-27 04:26:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:20,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:20,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:26:20,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:26:20,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:26:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:20,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:26:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:20,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:20,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:26:20,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:20,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:26:20,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:26:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 04:26:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:20,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:20,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:20,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:26:20,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:26:20,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:26:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:20,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-27 04:26:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:20,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:20,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:20,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:26:20,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:26:20,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:26:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-27 04:26:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:20,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:20,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:26:20,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:26:20,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:26:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:20,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:26:20,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778899069] [2020-10-27 04:26:20,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:26:20,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 04:26:20,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781803053] [2020-10-27 04:26:20,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:26:20,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:26:20,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:26:20,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:26:20,949 INFO L87 Difference]: Start difference. First operand 6609 states and 11230 transitions. Second operand 16 states. [2020-10-27 04:26:23,302 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 392 DAG size of output: 391 [2020-10-27 04:26:24,429 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-27 04:26:36,915 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 390 [2020-10-27 04:26:39,731 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 394 DAG size of output: 393 [2020-10-27 04:26:40,455 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2020-10-27 04:26:41,158 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-27 04:26:41,912 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-10-27 04:26:42,631 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2020-10-27 04:26:43,815 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2020-10-27 04:26:44,834 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2020-10-27 04:26:45,828 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2020-10-27 04:26:46,861 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2020-10-27 04:26:48,624 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-27 04:26:49,314 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2020-10-27 04:26:50,173 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2020-10-27 04:26:51,232 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2020-10-27 04:26:52,142 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2020-10-27 04:26:52,986 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2020-10-27 04:26:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:26:53,362 INFO L93 Difference]: Finished difference Result 9704 states and 16308 transitions. [2020-10-27 04:26:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 04:26:53,363 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 247 [2020-10-27 04:26:53,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:26:53,405 INFO L225 Difference]: With dead ends: 9704 [2020-10-27 04:26:53,405 INFO L226 Difference]: Without dead ends: 9194 [2020-10-27 04:26:53,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:26:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9194 states. [2020-10-27 04:26:55,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9194 to 6807. [2020-10-27 04:26:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6807 states. [2020-10-27 04:26:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6807 states to 6807 states and 11552 transitions. [2020-10-27 04:26:55,036 INFO L78 Accepts]: Start accepts. Automaton has 6807 states and 11552 transitions. Word has length 247 [2020-10-27 04:26:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:26:55,036 INFO L481 AbstractCegarLoop]: Abstraction has 6807 states and 11552 transitions. [2020-10-27 04:26:55,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:26:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 6807 states and 11552 transitions. [2020-10-27 04:26:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-27 04:26:55,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:26:55,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:26:55,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:26:55,058 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:26:55,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:26:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash -457042517, now seen corresponding path program 1 times [2020-10-27 04:26:55,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:26:55,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636780971] [2020-10-27 04:26:55,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:26:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:55,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:00,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:00,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 04:27:00,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:27:00,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-27 04:27:00,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:27:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:27:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 04:27:00,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:01,305 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:27:01,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:27:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:01,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:01,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:27:01,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:27:01,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:27:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:01,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:27:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-27 04:27:01,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:27:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:27:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:01,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:27:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:01,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:01,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:27:01,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:01,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:27:01,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:27:01,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:01,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:27:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:01,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:01,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:01,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:27:01,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:27:01,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:27:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:27:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:01,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-27 04:27:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:01,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:27:01,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:27:01,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:27:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:01,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:27:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:01,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:01,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:01,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:27:01,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:27:01,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:27:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:01,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:27:02,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 04:27:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:27:02,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:27:02,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:27:02,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:02,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-27 04:27:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:27:02,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:27:02,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:27:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-27 04:27:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:27:02,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:27:02,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:27:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:27:02,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636780971] [2020-10-27 04:27:02,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:27:02,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:27:02,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465651808] [2020-10-27 04:27:02,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:27:02,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:27:02,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:27:02,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:27:02,309 INFO L87 Difference]: Start difference. First operand 6807 states and 11552 transitions. Second operand 11 states. [2020-10-27 04:27:03,423 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-27 04:27:04,552 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 387 [2020-10-27 04:27:06,426 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 393 [2020-10-27 04:27:07,576 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 391