/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=DEEPEST --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_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:08:20,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:08:20,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:08:20,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:08:20,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:08:20,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:08:20,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:08:20,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:08:20,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:08:20,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:08:20,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:08:20,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:08:20,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:08:20,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:08:20,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:08:20,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:08:20,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:08:20,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:08:20,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:08:20,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:08:20,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:08:20,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:08:20,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:08:20,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:08:20,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:08:20,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:08:20,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:08:20,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:08:20,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:08:20,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:08:20,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:08:20,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:08:20,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:08:20,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:08:20,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:08:20,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:08:20,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:08:20,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:08:20,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:08:20,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:08:20,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:08:20,871 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 23:08:20,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:08:20,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:08:20,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:08:20,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:08:20,923 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:08:20,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:08:20,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:08:20,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:08:20,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:08:20,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:08:20,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:08:20,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:08:20,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:08:20,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:08:20,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:08:20,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:08:20,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:08:20,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:08:20,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:08:20,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:08:20,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:08:20,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:08:20,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:08:20,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:08:20,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:08:20,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:08:20,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:08:20,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:08:20,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:08:20,935 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:08:21,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:08:21,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:08:21,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:08:21,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:08:21,374 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:08:21,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-27 23:08:21,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2945bc1c/94571b09fa044462896cdcc52255fb1c/FLAGea421103b [2020-10-27 23:08:22,206 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:08:22,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-27 23:08:22,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2945bc1c/94571b09fa044462896cdcc52255fb1c/FLAGea421103b [2020-10-27 23:08:22,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2945bc1c/94571b09fa044462896cdcc52255fb1c [2020-10-27 23:08:22,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:08:22,549 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:08:22,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:08:22,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:08:22,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:08:22,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:08:22" (1/1) ... [2020-10-27 23:08:22,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2632d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:22, skipping insertion in model container [2020-10-27 23:08:22,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:08:22" (1/1) ... [2020-10-27 23:08:22,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:08:22,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:08:22,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:08:22,972 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:08:23,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:08:23,109 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:08:23,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23 WrapperNode [2020-10-27 23:08:23,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:08:23,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:08:23,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:08:23,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:08:23,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23" (1/1) ... [2020-10-27 23:08:23,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23" (1/1) ... [2020-10-27 23:08:23,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23" (1/1) ... [2020-10-27 23:08:23,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23" (1/1) ... [2020-10-27 23:08:23,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23" (1/1) ... [2020-10-27 23:08:23,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23" (1/1) ... [2020-10-27 23:08:23,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23" (1/1) ... [2020-10-27 23:08:23,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:08:23,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:08:23,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:08:23,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:08:23,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23" (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 23:08:23,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:08:23,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:08:23,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:08:23,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:08:23,289 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:08:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:08:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:08:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:08:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:08:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:08:23,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:08:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:08:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:08:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:08:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:08:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:08:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:08:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:08:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:08:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:08:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:08:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:08:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:08:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:08:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:08:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:08:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:08:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:08:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:08:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:08:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:08:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:08:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:08:24,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:08:24,319 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:08:24,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:08:24 BoogieIcfgContainer [2020-10-27 23:08:24,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:08:24,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:08:24,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:08:24,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:08:24,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:08:22" (1/3) ... [2020-10-27 23:08:24,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ec82ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:08:24, skipping insertion in model container [2020-10-27 23:08:24,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:08:23" (2/3) ... [2020-10-27 23:08:24,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ec82ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:08:24, skipping insertion in model container [2020-10-27 23:08:24,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:08:24" (3/3) ... [2020-10-27 23:08:24,333 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-27 23:08:24,346 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:08:24,351 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:08:24,367 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:08:24,399 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:08:24,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:08:24,399 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:08:24,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:08:24,400 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:08:24,400 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:08:24,400 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:08:24,400 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:08:24,425 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-10-27 23:08:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 23:08:24,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:08:24,438 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] [2020-10-27 23:08:24,438 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:08:24,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:08:24,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1937700257, now seen corresponding path program 1 times [2020-10-27 23:08:24,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:08:24,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018382056] [2020-10-27 23:08:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:08:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:25,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:25,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:08:25,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-27 23:08:25,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 23:08:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:08:25,687 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:08:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:08:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:25,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:25,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:25,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:08:25,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:25,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:08:25,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:25,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:08:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:25,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:25,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 23:08:25,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:08:25,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:25,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:25,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 23:08:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:25,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:25,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:25,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:08:25,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:25,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:08:25,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:08:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:25,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 23:08:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:25,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:25,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:25,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:25,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:08:25,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:25,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:08:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:25,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:25,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:25,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:25,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:08:25,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:25,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:25,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:25,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:25,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:25,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:08:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:25,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:25,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:25,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:08:25,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:08:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:25,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:25,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:08:25,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:08:25,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:08:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:26,016 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 23:08:26,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018382056] [2020-10-27 23:08:26,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:08:26,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:08:26,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121501649] [2020-10-27 23:08:26,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:08:26,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:08:26,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:08:26,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:08:26,044 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 6 states. [2020-10-27 23:08:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:08:27,452 INFO L93 Difference]: Finished difference Result 299 states and 471 transitions. [2020-10-27 23:08:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:08:27,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-27 23:08:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:08:27,474 INFO L225 Difference]: With dead ends: 299 [2020-10-27 23:08:27,474 INFO L226 Difference]: Without dead ends: 185 [2020-10-27 23:08:27,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:08:27,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-27 23:08:27,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 170. [2020-10-27 23:08:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-27 23:08:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 272 transitions. [2020-10-27 23:08:27,573 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 272 transitions. Word has length 66 [2020-10-27 23:08:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:08:27,573 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 272 transitions. [2020-10-27 23:08:27,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:08:27,574 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 272 transitions. [2020-10-27 23:08:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 23:08:27,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:08:27,578 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] [2020-10-27 23:08:27,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:08:27,579 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:08:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:08:27,580 INFO L82 PathProgramCache]: Analyzing trace with hash 92333091, now seen corresponding path program 1 times [2020-10-27 23:08:27,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:08:27,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533961593] [2020-10-27 23:08:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:08:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:27,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:28,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:28,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:08:28,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:28,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-10-27 23:08:28,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:08:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 23:08:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:08:28,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:28,913 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:08:28,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:08:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:28,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:28,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:08:28,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:28,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:08:28,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:28,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:08:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:29,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:29,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 23:08:29,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 23:08:29,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:08:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 23:08:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:29,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:29,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:08:29,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:08:29,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 23:08:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:08:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:08:29,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 23:08:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:29,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:29,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:29,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:08:29,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:29,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:29,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:08:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:29,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:29,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:29,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:29,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:29,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:08:29,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:29,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 23:08:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:08:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:29,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:29,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:08:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:08:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:08:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:29,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:29,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:08:29,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:08:29,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:08:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:08:29,311 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 23:08:29,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533961593] [2020-10-27 23:08:29,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:08:29,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:08:29,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101717282] [2020-10-27 23:08:29,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:08:29,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:08:29,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:08:29,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:08:29,317 INFO L87 Difference]: Start difference. First operand 170 states and 272 transitions. Second operand 12 states. [2020-10-27 23:08:29,985 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:08:30,311 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:08:30,665 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:08:30,935 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:08:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:08:32,637 INFO L93 Difference]: Finished difference Result 298 states and 469 transitions. [2020-10-27 23:08:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:08:32,638 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-27 23:08:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:08:32,646 INFO L225 Difference]: With dead ends: 298 [2020-10-27 23:08:32,647 INFO L226 Difference]: Without dead ends: 194 [2020-10-27 23:08:32,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:08:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-27 23:08:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 170. [2020-10-27 23:08:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-27 23:08:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 242 transitions. [2020-10-27 23:08:32,709 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 242 transitions. Word has length 66 [2020-10-27 23:08:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:08:32,709 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 242 transitions. [2020-10-27 23:08:32,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:08:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 242 transitions. [2020-10-27 23:08:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 23:08:32,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:08:32,719 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] [2020-10-27 23:08:32,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:08:32,719 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:08:32,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:08:32,720 INFO L82 PathProgramCache]: Analyzing trace with hash -2007534636, now seen corresponding path program 1 times [2020-10-27 23:08:32,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:08:32,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742314836] [2020-10-27 23:08:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:08:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:32,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:32,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:37,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:37,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 23:08:37,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:08:37,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:08:37,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:08:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 23:08:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:08:37,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:08:38,073 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:08:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:08:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:38,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:38,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:08:38,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:38,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:08:38,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:38,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:38,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:38,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:38,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:38,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:08:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:38,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:38,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:08:38,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 23:08:38,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:08:38,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:08:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:38,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:38,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:08:38,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:08:38,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:08:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:08:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:08:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:08:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:38,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:38,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:38,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:38,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:08:38,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:08:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:08:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:08:38,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:08:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:38,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:38,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:38,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:08:38,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:08:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:08:38,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:38,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:08:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:38,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:38,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:38,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:08:38,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:08:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:08:38,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:08:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:38,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:38,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:08:38,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:08:38,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:08:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:08:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:08:38,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:38,600 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 23:08:38,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742314836] [2020-10-27 23:08:38,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:08:38,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:08:38,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798949361] [2020-10-27 23:08:38,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:08:38,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:08:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:08:38,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:08:38,610 INFO L87 Difference]: Start difference. First operand 170 states and 242 transitions. Second operand 13 states. [2020-10-27 23:08:38,917 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:08:39,457 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:08:39,692 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:08:40,607 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-27 23:08:41,553 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-10-27 23:08:41,872 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-27 23:08:42,109 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-27 23:08:42,364 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:08:43,035 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-27 23:08:43,649 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 190 [2020-10-27 23:08:44,928 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 23:08:45,089 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-27 23:08:45,936 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 23:08:46,101 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-27 23:08:46,753 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-27 23:08:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:08:46,963 INFO L93 Difference]: Finished difference Result 756 states and 1153 transitions. [2020-10-27 23:08:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 23:08:46,964 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-10-27 23:08:46,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:08:46,972 INFO L225 Difference]: With dead ends: 756 [2020-10-27 23:08:46,972 INFO L226 Difference]: Without dead ends: 658 [2020-10-27 23:08:46,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 23:08:46,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-27 23:08:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 467. [2020-10-27 23:08:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-27 23:08:47,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 707 transitions. [2020-10-27 23:08:47,045 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 707 transitions. Word has length 95 [2020-10-27 23:08:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:08:47,046 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 707 transitions. [2020-10-27 23:08:47,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 23:08:47,046 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 707 transitions. [2020-10-27 23:08:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 23:08:47,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:08:47,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:08:47,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:08:47,050 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:08:47,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:08:47,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1890593305, now seen corresponding path program 1 times [2020-10-27 23:08:47,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:08:47,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754240989] [2020-10-27 23:08:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:08:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:47,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:52,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:52,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 23:08:52,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:08:52,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:08:52,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:52,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 23:08:52,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 23:08:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:08:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:08:52,442 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:08:52,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:08:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:52,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:52,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:52,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:08:52,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:52,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:08:52,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:08:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:52,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:52,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:52,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:08:52,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 23:08:52,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:08:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:08:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:52,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:52,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:08:52,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:08:52,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:08:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:08:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:08:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:52,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:52,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:52,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:08:52,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:08:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:08:52,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:08:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:52,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:52,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:52,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:52,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:08:52,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:08:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:08:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:52,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:08:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:52,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:52,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:52,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:08:52,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:08:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:08:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:52,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:08:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:52,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:52,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:08:52,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:08:52,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:08:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:08:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:08:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:52,890 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 23:08:52,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754240989] [2020-10-27 23:08:52,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:08:52,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:08:52,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016395216] [2020-10-27 23:08:52,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:08:52,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:08:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:08:52,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:08:52,894 INFO L87 Difference]: Start difference. First operand 467 states and 707 transitions. Second operand 14 states. [2020-10-27 23:08:53,189 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:08:53,783 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:08:54,060 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:08:54,323 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:08:56,556 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:08:56,807 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:08:57,113 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:08:57,376 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:09:01,128 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:09:01,424 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:09:03,985 INFO L93 Difference]: Finished difference Result 2734 states and 4270 transitions. [2020-10-27 23:09:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 23:09:03,986 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-10-27 23:09:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:09:04,004 INFO L225 Difference]: With dead ends: 2734 [2020-10-27 23:09:04,005 INFO L226 Difference]: Without dead ends: 2339 [2020-10-27 23:09:04,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1412 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=889, Invalid=3533, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 23:09:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2020-10-27 23:09:04,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 1431. [2020-10-27 23:09:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-10-27 23:09:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2208 transitions. [2020-10-27 23:09:04,207 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2208 transitions. Word has length 96 [2020-10-27 23:09:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:09:04,208 INFO L481 AbstractCegarLoop]: Abstraction has 1431 states and 2208 transitions. [2020-10-27 23:09:04,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:09:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2208 transitions. [2020-10-27 23:09:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 23:09:04,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:09:04,210 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] [2020-10-27 23:09:04,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:09:04,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:09:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:09:04,211 INFO L82 PathProgramCache]: Analyzing trace with hash 871242141, now seen corresponding path program 1 times [2020-10-27 23:09:04,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:09:04,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534219950] [2020-10-27 23:09:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:09:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:04,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:04,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:09,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:09,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 23:09:09,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:09:09,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:09:09,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:09,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:09:09,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 23:09:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 23:09:09,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:09,534 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:09:09,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:09:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:09,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:09,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:09,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:09:09,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:09,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:09:09,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:09,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:09:09,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:09:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:09,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:09,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:09,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:09:09,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:09,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 23:09:09,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:09:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 23:09:09,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:09,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:09:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:09,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:09,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:09,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:09:09,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:09,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:09:09,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:09:09,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:09,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:09:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:09,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:09,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:09,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:09:09,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:09:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:09:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:09,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:09,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:09,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:09,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:09,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:09:09,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:09,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:09,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:09:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:09,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:09,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:09,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:09,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:09:09,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:09:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:09:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:09,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:09,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:09:09,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:09:09,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 23:09:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:09:09,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:09,897 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 23:09:09,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534219950] [2020-10-27 23:09:09,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:09:09,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:09:09,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131151044] [2020-10-27 23:09:09,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:09:09,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:09:09,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:09:09,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:09:09,903 INFO L87 Difference]: Start difference. First operand 1431 states and 2208 transitions. Second operand 10 states. [2020-10-27 23:09:10,158 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:09:10,734 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:09:12,512 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:12,749 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:09:15,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:09:15,937 INFO L93 Difference]: Finished difference Result 5477 states and 8538 transitions. [2020-10-27 23:09:15,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 23:09:15,938 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-10-27 23:09:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:09:15,965 INFO L225 Difference]: With dead ends: 5477 [2020-10-27 23:09:15,965 INFO L226 Difference]: Without dead ends: 4145 [2020-10-27 23:09:15,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 23:09:15,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2020-10-27 23:09:16,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 3559. [2020-10-27 23:09:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3559 states. [2020-10-27 23:09:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 5492 transitions. [2020-10-27 23:09:16,282 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 5492 transitions. Word has length 97 [2020-10-27 23:09:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:09:16,282 INFO L481 AbstractCegarLoop]: Abstraction has 3559 states and 5492 transitions. [2020-10-27 23:09:16,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:09:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 5492 transitions. [2020-10-27 23:09:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:09:16,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:09:16,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:09:16,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:09:16,286 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:09:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:09:16,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2028861378, now seen corresponding path program 1 times [2020-10-27 23:09:16,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:09:16,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155697536] [2020-10-27 23:09:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:09:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:16,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:17,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:21,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:21,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 23:09:21,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:09:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:09:21,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:09:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 23:09:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 23:09:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:21,678 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:09:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:09:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:21,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:21,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:09:21,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:09:21,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:09:21,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:09:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:21,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:21,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:21,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:09:21,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:21,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 23:09:21,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:09:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:21,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:09:21,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:21,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:09:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:21,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:21,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:09:21,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:09:21,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:21,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:09:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:09:21,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:09:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:21,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:21,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:21,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:21,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:09:21,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:09:21,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:22,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:09:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:22,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:22,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:22,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:22,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:09:22,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:09:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:22,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:09:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:22,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:22,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:22,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:22,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:22,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:09:22,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:09:22,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:09:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:22,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:22,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:09:22,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:09:22,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 23:09:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:09:22,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:22,145 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 23:09:22,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155697536] [2020-10-27 23:09:22,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:09:22,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:09:22,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675608497] [2020-10-27 23:09:22,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:09:22,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:09:22,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:09:22,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:09:22,155 INFO L87 Difference]: Start difference. First operand 3559 states and 5492 transitions. Second operand 10 states. [2020-10-27 23:09:22,415 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:22,976 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:24,441 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:09:24,681 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:09:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:09:28,053 INFO L93 Difference]: Finished difference Result 18060 states and 28063 transitions. [2020-10-27 23:09:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 23:09:28,054 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-10-27 23:09:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:09:28,145 INFO L225 Difference]: With dead ends: 18060 [2020-10-27 23:09:28,145 INFO L226 Difference]: Without dead ends: 14600 [2020-10-27 23:09:28,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 23:09:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14600 states. [2020-10-27 23:09:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14600 to 12484. [2020-10-27 23:09:29,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12484 states. [2020-10-27 23:09:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12484 states to 12484 states and 19249 transitions. [2020-10-27 23:09:29,254 INFO L78 Accepts]: Start accepts. Automaton has 12484 states and 19249 transitions. Word has length 98 [2020-10-27 23:09:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:09:29,255 INFO L481 AbstractCegarLoop]: Abstraction has 12484 states and 19249 transitions. [2020-10-27 23:09:29,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:09:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 12484 states and 19249 transitions. [2020-10-27 23:09:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:09:29,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:09:29,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:09:29,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:09:29,259 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:09:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:09:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1486226264, now seen corresponding path program 1 times [2020-10-27 23:09:29,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:09:29,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606515181] [2020-10-27 23:09:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:09:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:29,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:29,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:34,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:09:34,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:09:34,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:09:34,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:34,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:34,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:09:34,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 23:09:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:34,590 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:09:34,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:09:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:34,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:34,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:09:34,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:09:34,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:34,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:09:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:34,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:34,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:09:34,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:34,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 23:09:34,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 23:09:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:09:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:34,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:34,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:09:34,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:34,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:09:34,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:09:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:09:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:34,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:09:34,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:09:34,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:09:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:09:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:34,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:34,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:34,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:09:34,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:09:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:34,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:34,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 23:09:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:34,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:34,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:09:34,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:09:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:34,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 23:09:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:34,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:34,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:09:34,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:34,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:09:34,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:09:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:34,938 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 23:09:34,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606515181] [2020-10-27 23:09:34,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:09:34,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:09:34,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287799625] [2020-10-27 23:09:34,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:09:34,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:09:34,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:09:34,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:09:34,941 INFO L87 Difference]: Start difference. First operand 12484 states and 19249 transitions. Second operand 9 states. [2020-10-27 23:09:35,220 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:09:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:09:39,337 INFO L93 Difference]: Finished difference Result 37872 states and 58749 transitions. [2020-10-27 23:09:39,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:09:39,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 23:09:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:09:39,486 INFO L225 Difference]: With dead ends: 37872 [2020-10-27 23:09:39,486 INFO L226 Difference]: Without dead ends: 25474 [2020-10-27 23:09:39,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:09:39,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25474 states. [2020-10-27 23:09:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25474 to 22116. [2020-10-27 23:09:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22116 states. [2020-10-27 23:09:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22116 states to 22116 states and 33753 transitions. [2020-10-27 23:09:41,342 INFO L78 Accepts]: Start accepts. Automaton has 22116 states and 33753 transitions. Word has length 99 [2020-10-27 23:09:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:09:41,343 INFO L481 AbstractCegarLoop]: Abstraction has 22116 states and 33753 transitions. [2020-10-27 23:09:41,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:09:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 22116 states and 33753 transitions. [2020-10-27 23:09:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:09:41,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:09:41,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:09:41,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:09:41,346 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:09:41,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:09:41,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1787437888, now seen corresponding path program 1 times [2020-10-27 23:09:41,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:09:41,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917706806] [2020-10-27 23:09:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:09:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:41,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:41,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:41,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:41,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:46,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:46,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:09:46,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:09:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 23:09:46,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 23:09:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:09:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:46,648 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:09:46,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:09:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:46,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:09:46,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:09:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:46,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:09:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:46,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:46,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:09:46,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 23:09:46,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:09:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:09:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:46,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:46,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:46,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:09:46,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:09:46,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:09:46,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:09:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:46,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:46,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:46,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:09:46,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:09:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:09:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:09:46,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:46,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:09:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:46,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:46,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:46,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:09:46,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:46,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:09:46,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:09:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:09:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:09:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 23:09:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:46,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:46,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:09:46,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:46,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:09:46,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:09:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:46,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 23:09:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:46,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:09:46,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:09:46,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:09:46,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:09:46,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:09:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:09:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:09:46,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:09:46,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:09:47,008 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 23:09:47,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917706806] [2020-10-27 23:09:47,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:09:47,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:09:47,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050166613] [2020-10-27 23:09:47,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:09:47,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:09:47,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:09:47,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:09:47,011 INFO L87 Difference]: Start difference. First operand 22116 states and 33753 transitions. Second operand 9 states. [2020-10-27 23:09:47,281 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:09:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:09:52,096 INFO L93 Difference]: Finished difference Result 66381 states and 101765 transitions. [2020-10-27 23:09:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:09:52,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 23:09:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:09:52,281 INFO L225 Difference]: With dead ends: 66381 [2020-10-27 23:09:52,281 INFO L226 Difference]: Without dead ends: 44353 [2020-10-27 23:09:52,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:09:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44353 states. [2020-10-27 23:09:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44353 to 38985. [2020-10-27 23:09:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38985 states. [2020-10-27 23:09:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38985 states to 38985 states and 58467 transitions. [2020-10-27 23:09:55,655 INFO L78 Accepts]: Start accepts. Automaton has 38985 states and 58467 transitions. Word has length 99 [2020-10-27 23:09:55,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:09:55,655 INFO L481 AbstractCegarLoop]: Abstraction has 38985 states and 58467 transitions. [2020-10-27 23:09:55,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:09:55,655 INFO L276 IsEmpty]: Start isEmpty. Operand 38985 states and 58467 transitions. [2020-10-27 23:09:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:09:55,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:09:55,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:09:55,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:09:55,657 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:09:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:09:55,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1829443368, now seen corresponding path program 1 times [2020-10-27 23:09:55,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:09:55,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013493023] [2020-10-27 23:09:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:09:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:09:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:09:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:00,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:00,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:00,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:10:00,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:10:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:10:00,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 23:10:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:10:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:00,989 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:00,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:01,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:01,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:01,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:01,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:10:01,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:01,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:01,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:01,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:10:01,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:01,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 23:10:01,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:10:01,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:01,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:01,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:01,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:10:01,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:10:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:01,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:01,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:01,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:01,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:10:01,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:10:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:01,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:10:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:01,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:01,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:01,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:10:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:10:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:10:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:01,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:01,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:10:01,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:01,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 23:10:01,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:01,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:10:01,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 23:10:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:01,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:10:01,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:10:01,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:10:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:01,324 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 23:10:01,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013493023] [2020-10-27 23:10:01,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:01,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:10:01,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149307445] [2020-10-27 23:10:01,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:10:01,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:01,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:10:01,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:10:01,327 INFO L87 Difference]: Start difference. First operand 38985 states and 58467 transitions. Second operand 9 states. [2020-10-27 23:10:01,599 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:10:02,426 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 23:10:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:08,295 INFO L93 Difference]: Finished difference Result 114512 states and 172343 transitions. [2020-10-27 23:10:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:10:08,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 23:10:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:08,837 INFO L225 Difference]: With dead ends: 114512 [2020-10-27 23:10:08,837 INFO L226 Difference]: Without dead ends: 75615 [2020-10-27 23:10:08,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:10:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75615 states. [2020-10-27 23:10:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75615 to 67567. [2020-10-27 23:10:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67567 states. [2020-10-27 23:10:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67567 states to 67567 states and 98971 transitions. [2020-10-27 23:10:14,546 INFO L78 Accepts]: Start accepts. Automaton has 67567 states and 98971 transitions. Word has length 99 [2020-10-27 23:10:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:10:14,546 INFO L481 AbstractCegarLoop]: Abstraction has 67567 states and 98971 transitions. [2020-10-27 23:10:14,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:10:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 67567 states and 98971 transitions. [2020-10-27 23:10:14,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:10:14,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:14,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:10:14,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:10:14,548 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:14,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1886649782, now seen corresponding path program 1 times [2020-10-27 23:10:14,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:14,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437451641] [2020-10-27 23:10:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:15,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:19,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:19,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 23:10:19,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:10:19,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:10:19,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 23:10:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:10:19,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:19,893 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:19,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:19,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:19,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:19,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:10:19,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:19,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:19,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:19,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:19,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:10:19,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:10:19,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:19,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:19,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:19,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:19,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:10:19,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:20,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:10:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:20,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:20,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:20,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:20,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:10:20,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:10:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:10:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:20,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:20,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:20,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:20,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:10:20,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:10:20,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:20,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:10:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:20,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:20,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:20,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:20,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:10:20,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:10:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:20,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:10:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:20,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:20,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:10:20,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:10:20,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:10:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:20,162 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 23:10:20,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437451641] [2020-10-27 23:10:20,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:20,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:10:20,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29414548] [2020-10-27 23:10:20,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:10:20,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:20,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:10:20,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:10:20,168 INFO L87 Difference]: Start difference. First operand 67567 states and 98971 transitions. Second operand 8 states. [2020-10-27 23:10:20,428 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:10:22,519 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:10:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:32,127 INFO L93 Difference]: Finished difference Result 200152 states and 296736 transitions. [2020-10-27 23:10:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:10:32,133 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-27 23:10:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:32,915 INFO L225 Difference]: With dead ends: 200152 [2020-10-27 23:10:32,915 INFO L226 Difference]: Without dead ends: 132670 [2020-10-27 23:10:33,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:10:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132670 states. [2020-10-27 23:10:42,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132670 to 119939. [2020-10-27 23:10:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119939 states. [2020-10-27 23:10:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119939 states to 119939 states and 172298 transitions. [2020-10-27 23:10:43,079 INFO L78 Accepts]: Start accepts. Automaton has 119939 states and 172298 transitions. Word has length 100 [2020-10-27 23:10:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:10:43,080 INFO L481 AbstractCegarLoop]: Abstraction has 119939 states and 172298 transitions. [2020-10-27 23:10:43,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:10:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 119939 states and 172298 transitions. [2020-10-27 23:10:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 23:10:43,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:43,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:10:43,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:10:43,088 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:43,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:43,091 INFO L82 PathProgramCache]: Analyzing trace with hash -15793057, now seen corresponding path program 1 times [2020-10-27 23:10:43,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:43,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828194910] [2020-10-27 23:10:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:44,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:48,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:48,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 23:10:48,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:10:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:10:48,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:10:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 23:10:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 23:10:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:48,407 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:48,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:48,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:48,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:48,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:10:48,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:48,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:48,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:48,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:48,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:10:48,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 23:10:48,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:10:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:48,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:48,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:48,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:48,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:10:48,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:48,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:48,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:10:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:48,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:48,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:10:48,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:10:48,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 23:10:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 23:10:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:10:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 23:10:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:48,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:48,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:48,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:10:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:48,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:48,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 23:10:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:48,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:48,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:48,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:10:48,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:48,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:10:48,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:10:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:48,852 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 23:10:48,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828194910] [2020-10-27 23:10:48,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:48,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:10:48,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279085388] [2020-10-27 23:10:48,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:10:48,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:48,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:10:48,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:10:48,857 INFO L87 Difference]: Start difference. First operand 119939 states and 172298 transitions. Second operand 13 states. [2020-10-27 23:10:49,148 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:10:49,811 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:10:50,070 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:10:51,319 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:10:52,292 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:10:53,511 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:10:56,257 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 23:11:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:11:10,170 INFO L93 Difference]: Finished difference Result 313252 states and 455231 transitions. [2020-10-27 23:11:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 23:11:10,170 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-10-27 23:11:10,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:11:11,224 INFO L225 Difference]: With dead ends: 313252 [2020-10-27 23:11:11,224 INFO L226 Difference]: Without dead ends: 193401 [2020-10-27 23:11:11,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=648, Invalid=2108, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 23:11:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193401 states. [2020-10-27 23:11:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193401 to 174671. [2020-10-27 23:11:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174671 states. [2020-10-27 23:11:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174671 states to 174671 states and 252307 transitions. [2020-10-27 23:11:25,843 INFO L78 Accepts]: Start accepts. Automaton has 174671 states and 252307 transitions. Word has length 102 [2020-10-27 23:11:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:11:25,843 INFO L481 AbstractCegarLoop]: Abstraction has 174671 states and 252307 transitions. [2020-10-27 23:11:25,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 23:11:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 174671 states and 252307 transitions. [2020-10-27 23:11:25,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 23:11:25,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:11:25,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:11:25,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:11:25,844 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:11:25,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:11:25,845 INFO L82 PathProgramCache]: Analyzing trace with hash -863624667, now seen corresponding path program 1 times [2020-10-27 23:11:25,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:11:25,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569366603] [2020-10-27 23:11:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:11:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:25,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:30,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 23:11:30,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:11:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:11:30,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:11:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 23:11:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 23:11:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:31,164 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:11:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:11:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:31,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:31,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:11:31,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:11:31,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:31,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:11:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:31,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:31,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:11:31,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 23:11:31,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:11:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:31,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:11:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:31,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:31,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:31,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:11:31,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:11:31,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:11:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:31,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:11:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:31,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:31,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:31,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:11:31,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:31,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:11:31,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:11:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 23:11:31,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 23:11:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:31,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:31,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:31,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:31,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:11:31,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:11:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:11:31,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 23:11:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:31,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:31,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:31,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:31,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:31,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 23:11:31,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:31,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:31,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:11:31,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:11:31,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:31,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 23:11:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:31,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:31,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 23:11:31,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:11:31,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:11:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:11:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:31,547 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 23:11:31,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569366603] [2020-10-27 23:11:31,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:11:31,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:11:31,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230533375] [2020-10-27 23:11:31,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:11:31,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:11:31,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:11:31,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:11:31,549 INFO L87 Difference]: Start difference. First operand 174671 states and 252307 transitions. Second operand 14 states. [2020-10-27 23:11:31,838 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:11:32,546 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:11:32,812 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:11:34,026 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:11:35,005 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:11:36,320 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191