/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:20:22,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:20:22,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:20:22,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:20:22,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:20:22,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:20:22,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:20:22,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:20:22,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:20:22,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:20:22,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:20:22,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:20:22,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:20:22,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:20:22,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:20:22,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:20:22,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:20:22,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:20:22,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:20:22,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:20:22,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:20:22,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:20:22,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:20:22,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:20:22,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:20:22,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:20:22,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:20:22,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:20:22,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:20:22,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:20:22,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:20:22,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:20:22,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:20:22,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:20:22,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:20:22,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:20:22,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:20:22,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:20:22,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:20:22,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:20:22,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:20:22,795 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 [2020-10-29 12:20:22,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:20:22,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:20:22,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:20:22,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:20:22,841 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:20:22,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:20:22,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:20:22,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:20:22,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:20:22,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:20:22,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:20:22,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:20:22,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:20:22,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:20:22,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:20:22,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:20:22,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:20:22,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:20:22,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:20:22,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:20:22,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:20:22,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:20:22,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:20:22,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:20:22,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:20:22,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:20:22,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:20:22,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:20:22,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:20:22,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:20:23,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:20:23,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:20:23,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:20:23,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:20:23,307 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:20:23,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-29 12:20:23,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3b9affe8/3a55d762fc8c477282b0a894853058f8/FLAGc1a8bf0a8 [2020-10-29 12:20:24,104 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:20:24,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-29 12:20:24,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3b9affe8/3a55d762fc8c477282b0a894853058f8/FLAGc1a8bf0a8 [2020-10-29 12:20:24,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3b9affe8/3a55d762fc8c477282b0a894853058f8 [2020-10-29 12:20:24,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:20:24,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:20:24,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:20:24,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:20:24,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:20:24,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:20:24" (1/1) ... [2020-10-29 12:20:24,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723301f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24, skipping insertion in model container [2020-10-29 12:20:24,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:20:24" (1/1) ... [2020-10-29 12:20:24,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:20:24,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:20:24,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:20:24,793 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:20:24,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:20:24,907 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:20:24,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24 WrapperNode [2020-10-29 12:20:24,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:20:24,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:20:24,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:20:24,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:20:24,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24" (1/1) ... [2020-10-29 12:20:24,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24" (1/1) ... [2020-10-29 12:20:24,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24" (1/1) ... [2020-10-29 12:20:24,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24" (1/1) ... [2020-10-29 12:20:24,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24" (1/1) ... [2020-10-29 12:20:24,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24" (1/1) ... [2020-10-29 12:20:24,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24" (1/1) ... [2020-10-29 12:20:24,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:20:24,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:20:24,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:20:24,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:20:24,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24" (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 [2020-10-29 12:20:25,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:20:25,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:20:25,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:20:25,084 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:20:25,084 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:20:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:20:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:20:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:20:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:20:25,086 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:20:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:20:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:20:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:20:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:20:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:20:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:20:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:20:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:20:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:20:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:20:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:20:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:20:25,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:20:26,141 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:20:26,142 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:20:26,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:20:26 BoogieIcfgContainer [2020-10-29 12:20:26,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:20:26,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:20:26,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:20:26,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:20:26,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:20:24" (1/3) ... [2020-10-29 12:20:26,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4832e92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:20:26, skipping insertion in model container [2020-10-29 12:20:26,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:24" (2/3) ... [2020-10-29 12:20:26,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4832e92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:20:26, skipping insertion in model container [2020-10-29 12:20:26,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:20:26" (3/3) ... [2020-10-29 12:20:26,154 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-29 12:20:26,167 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:20:26,173 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:20:26,188 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:20:26,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:20:26,220 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:20:26,220 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:20:26,220 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:20:26,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:20:26,220 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:20:26,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:20:26,220 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:20:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-29 12:20:26,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 12:20:26,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:26,257 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] [2020-10-29 12:20:26,257 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:26,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:26,264 INFO L82 PathProgramCache]: Analyzing trace with hash 916145648, now seen corresponding path program 1 times [2020-10-29 12:20:26,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:26,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703901222] [2020-10-29 12:20:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:26,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:20:27,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-29 12:20:27,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 12:20:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:27,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:20:27,493 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:27,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:20:27,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:20:27,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:20:27,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:27,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:27,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:27,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:20:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:20:27,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:27,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:20:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:27,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:20:27,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:20:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:27,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:20:27,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:20:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:27,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:27,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703901222] [2020-10-29 12:20:27,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:27,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:20:27,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945504665] [2020-10-29 12:20:27,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:20:27,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:27,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:20:27,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:20:27,842 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 6 states. [2020-10-29 12:20:29,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:29,064 INFO L93 Difference]: Finished difference Result 263 states and 417 transitions. [2020-10-29 12:20:29,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:20:29,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-29 12:20:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:29,079 INFO L225 Difference]: With dead ends: 263 [2020-10-29 12:20:29,079 INFO L226 Difference]: Without dead ends: 163 [2020-10-29 12:20:29,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-29 12:20:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2020-10-29 12:20:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 12:20:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 244 transitions. [2020-10-29 12:20:29,151 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 244 transitions. Word has length 59 [2020-10-29 12:20:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:29,152 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 244 transitions. [2020-10-29 12:20:29,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:20:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 244 transitions. [2020-10-29 12:20:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 12:20:29,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:29,155 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] [2020-10-29 12:20:29,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:20:29,156 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:29,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:29,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1327837650, now seen corresponding path program 1 times [2020-10-29 12:20:29,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:29,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827921766] [2020-10-29 12:20:29,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:29,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:29,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:20:29,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:29,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-29 12:20:29,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:29,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:29,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:20:29,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 12:20:29,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:29,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:30,456 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:30,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:30,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:30,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:30,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:30,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:20:30,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:30,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:30,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:30,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:30,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:20:30,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 12:20:30,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:30,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:30,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:20:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:30,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:20:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:30,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:30,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:30,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:30,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:30,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:30,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:30,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:30,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:30,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:20:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:30,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:30,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:30,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:30,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:30,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:30,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:30,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:30,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:30,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:20:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:30,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:30,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:30,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:30,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:30,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:30,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:20:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:30,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:30,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:30,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:30,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:30,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:30,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:30,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:30,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:30,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827921766] [2020-10-29 12:20:30,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:30,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:20:30,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042333830] [2020-10-29 12:20:30,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:20:30,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:30,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:20:30,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:20:30,799 INFO L87 Difference]: Start difference. First operand 151 states and 244 transitions. Second operand 10 states. [2020-10-29 12:20:31,436 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:31,807 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:20:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:33,523 INFO L93 Difference]: Finished difference Result 264 states and 416 transitions. [2020-10-29 12:20:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:20:33,523 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-29 12:20:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:33,530 INFO L225 Difference]: With dead ends: 264 [2020-10-29 12:20:33,531 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 12:20:33,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:20:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 12:20:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 151. [2020-10-29 12:20:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 12:20:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 217 transitions. [2020-10-29 12:20:33,563 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 217 transitions. Word has length 59 [2020-10-29 12:20:33,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:33,564 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 217 transitions. [2020-10-29 12:20:33,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:20:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 217 transitions. [2020-10-29 12:20:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 12:20:33,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:33,567 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] [2020-10-29 12:20:33,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:20:33,567 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:33,568 INFO L82 PathProgramCache]: Analyzing trace with hash 242313367, now seen corresponding path program 1 times [2020-10-29 12:20:33,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:33,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561045290] [2020-10-29 12:20:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:38,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:20:38,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:20:38,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:38,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:38,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 12:20:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 12:20:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:20:38,934 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:38,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:38,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:38,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:20:38,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:38,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:38,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:38,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:39,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:39,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:39,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:20:39,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:39,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:20:39,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:39,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:39,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:39,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:39,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:20:39,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:39,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:20:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:20:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:39,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:20:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:39,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:39,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:39,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:39,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:39,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:39,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:20:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:39,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:39,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:39,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:39,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:39,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:39,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:39,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:20:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:39,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:39,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:39,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:39,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:39,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:39,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:39,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:39,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561045290] [2020-10-29 12:20:39,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:39,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:39,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96900783] [2020-10-29 12:20:39,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:39,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:39,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:39,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:39,233 INFO L87 Difference]: Start difference. First operand 151 states and 217 transitions. Second operand 9 states. [2020-10-29 12:20:39,574 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:20:41,774 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:20:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:42,380 INFO L93 Difference]: Finished difference Result 349 states and 522 transitions. [2020-10-29 12:20:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:20:42,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-29 12:20:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:42,386 INFO L225 Difference]: With dead ends: 349 [2020-10-29 12:20:42,386 INFO L226 Difference]: Without dead ends: 263 [2020-10-29 12:20:42,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:20:42,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-29 12:20:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 230. [2020-10-29 12:20:42,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-29 12:20:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 333 transitions. [2020-10-29 12:20:42,463 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 333 transitions. Word has length 85 [2020-10-29 12:20:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:42,466 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 333 transitions. [2020-10-29 12:20:42,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 333 transitions. [2020-10-29 12:20:42,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 12:20:42,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:42,471 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] [2020-10-29 12:20:42,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:20:42,471 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:42,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1924413294, now seen corresponding path program 1 times [2020-10-29 12:20:42,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:42,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202327603] [2020-10-29 12:20:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:47,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:20:47,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:20:47,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:20:47,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:47,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 12:20:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:47,848 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:47,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:20:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:47,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:47,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:47,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:47,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 12:20:47,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:47,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:48,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:48,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:48,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:48,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:48,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:20:48,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:48,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:20:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:48,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:20:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:48,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:48,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:48,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:48,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:48,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:48,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:20:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:48,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:48,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:48,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:48,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:48,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:20:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:48,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:48,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:48,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:48,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:48,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:48,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:48,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202327603] [2020-10-29 12:20:48,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:48,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:48,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739507973] [2020-10-29 12:20:48,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:48,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:48,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:48,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:48,274 INFO L87 Difference]: Start difference. First operand 230 states and 333 transitions. Second operand 9 states. [2020-10-29 12:20:48,625 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:49,012 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:20:49,431 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:20:50,286 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:20:51,146 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:53,969 INFO L93 Difference]: Finished difference Result 793 states and 1142 transitions. [2020-10-29 12:20:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:20:53,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-29 12:20:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:53,975 INFO L225 Difference]: With dead ends: 793 [2020-10-29 12:20:53,975 INFO L226 Difference]: Without dead ends: 590 [2020-10-29 12:20:53,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:20:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-10-29 12:20:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 540. [2020-10-29 12:20:54,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-29 12:20:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 768 transitions. [2020-10-29 12:20:54,040 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 768 transitions. Word has length 87 [2020-10-29 12:20:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:54,040 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 768 transitions. [2020-10-29 12:20:54,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 768 transitions. [2020-10-29 12:20:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 12:20:54,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:54,044 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] [2020-10-29 12:20:54,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:20:54,044 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:54,045 INFO L82 PathProgramCache]: Analyzing trace with hash 5184968, now seen corresponding path program 1 times [2020-10-29 12:20:54,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:54,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791846557] [2020-10-29 12:20:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:59,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:59,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:20:59,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:20:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:20:59,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:59,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:20:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:59,425 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:59,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:59,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:59,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:59,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:20:59,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:59,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:59,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:59,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:59,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:59,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 12:20:59,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:59,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:20:59,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:20:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:59,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:59,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:59,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:20:59,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:59,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:20:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:59,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:20:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:59,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:59,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:59,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:59,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:59,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:20:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:59,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:59,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:59,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:59,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:59,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:59,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:59,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:59,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:20:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:59,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:59,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:59,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:59,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:59,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:59,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:59,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791846557] [2020-10-29 12:20:59,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:59,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:59,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103250538] [2020-10-29 12:20:59,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:59,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:59,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:59,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:59,818 INFO L87 Difference]: Start difference. First operand 540 states and 768 transitions. Second operand 9 states. [2020-10-29 12:21:00,153 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:00,509 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:21:00,837 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:21:01,869 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:21:02,681 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:05,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:05,663 INFO L93 Difference]: Finished difference Result 1884 states and 2670 transitions. [2020-10-29 12:21:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:21:05,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-29 12:21:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:05,674 INFO L225 Difference]: With dead ends: 1884 [2020-10-29 12:21:05,675 INFO L226 Difference]: Without dead ends: 1390 [2020-10-29 12:21:05,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:21:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2020-10-29 12:21:05,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1319. [2020-10-29 12:21:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-29 12:21:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1840 transitions. [2020-10-29 12:21:05,806 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1840 transitions. Word has length 87 [2020-10-29 12:21:05,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:05,806 INFO L481 AbstractCegarLoop]: Abstraction has 1319 states and 1840 transitions. [2020-10-29 12:21:05,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:05,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1840 transitions. [2020-10-29 12:21:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:21:05,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:05,811 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] [2020-10-29 12:21:05,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:21:05,812 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:05,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2024792224, now seen corresponding path program 1 times [2020-10-29 12:21:05,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:05,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958719742] [2020-10-29 12:21:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:05,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:10,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:21:10,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:21:10,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:21:10,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:10,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:21:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:11,185 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:11,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:11,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:11,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:21:11,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:11,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:11,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:11,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:11,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:21:11,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:21:11,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:11,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:11,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:21:11,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:21:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:11,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:11,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:21:11,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:21:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:11,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:21:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:21:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:21:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:11,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:11,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:11,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:11,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:21:11,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:11,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:11,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:11,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:11,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:11,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:21:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:11,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:11,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:11,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:21:11,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:11,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:11,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:11,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 12:21:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:11,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:11,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:11,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:11,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:11,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:11,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:11,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:11,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958719742] [2020-10-29 12:21:11,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:11,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:21:11,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463867386] [2020-10-29 12:21:11,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:21:11,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:11,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:21:11,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:21:11,593 INFO L87 Difference]: Start difference. First operand 1319 states and 1840 transitions. Second operand 9 states. [2020-10-29 12:21:11,897 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:12,235 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:21:12,671 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:21:13,294 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:21:14,365 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:17,374 INFO L93 Difference]: Finished difference Result 4424 states and 6224 transitions. [2020-10-29 12:21:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:21:17,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-29 12:21:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:17,399 INFO L225 Difference]: With dead ends: 4424 [2020-10-29 12:21:17,399 INFO L226 Difference]: Without dead ends: 3206 [2020-10-29 12:21:17,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:21:17,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2020-10-29 12:21:17,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 3135. [2020-10-29 12:21:17,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3135 states. [2020-10-29 12:21:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 4353 transitions. [2020-10-29 12:21:17,694 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 4353 transitions. Word has length 88 [2020-10-29 12:21:17,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:17,694 INFO L481 AbstractCegarLoop]: Abstraction has 3135 states and 4353 transitions. [2020-10-29 12:21:17,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 4353 transitions. [2020-10-29 12:21:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:21:17,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:17,706 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] [2020-10-29 12:21:17,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:21:17,706 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:17,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1878847607, now seen corresponding path program 1 times [2020-10-29 12:21:17,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:17,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092738709] [2020-10-29 12:21:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:17,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:22,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:22,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:21:22,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:21:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:21:22,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:22,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:21:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:23,047 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:23,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:23,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:23,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:21:23,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:23,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:23,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:23,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:23,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:23,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:21:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:23,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:21:23,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:21:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 12:21:23,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:23,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:23,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:23,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:21:23,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:21:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:21:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:21:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:23,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:23,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:21:23,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:23,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:21:23,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:23,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:21:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:21:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:23,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:21:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:23,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:23,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:21:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:23,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:23,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:21:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:23,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:23,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:23,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:21:23,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:23,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:23,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 12:21:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:23,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:23,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:23,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:23,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:23,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:23,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:23,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092738709] [2020-10-29 12:21:23,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:23,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:21:23,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631223675] [2020-10-29 12:21:23,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:21:23,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:23,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:21:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:21:23,548 INFO L87 Difference]: Start difference. First operand 3135 states and 4353 transitions. Second operand 10 states. [2020-10-29 12:21:23,863 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:24,189 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:21:24,531 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:21:25,133 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:25,593 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:21:25,963 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:21:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:30,761 INFO L93 Difference]: Finished difference Result 10304 states and 14555 transitions. [2020-10-29 12:21:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:21:30,762 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-29 12:21:30,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:30,803 INFO L225 Difference]: With dead ends: 10304 [2020-10-29 12:21:30,804 INFO L226 Difference]: Without dead ends: 6957 [2020-10-29 12:21:30,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:21:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2020-10-29 12:21:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 6807. [2020-10-29 12:21:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6807 states. [2020-10-29 12:21:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6807 states to 6807 states and 9557 transitions. [2020-10-29 12:21:31,502 INFO L78 Accepts]: Start accepts. Automaton has 6807 states and 9557 transitions. Word has length 88 [2020-10-29 12:21:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:31,502 INFO L481 AbstractCegarLoop]: Abstraction has 6807 states and 9557 transitions. [2020-10-29 12:21:31,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:21:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 6807 states and 9557 transitions. [2020-10-29 12:21:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 12:21:31,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:31,519 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] [2020-10-29 12:21:31,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:21:31,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:31,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:31,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1303567, now seen corresponding path program 1 times [2020-10-29 12:21:31,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:31,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918491508] [2020-10-29 12:21:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:36,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:36,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:21:36,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:21:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:21:36,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:36,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:21:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:21:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:36,888 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:36,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:36,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:36,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:36,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:21:36,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:36,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:36,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:37,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:37,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:21:37,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:21:37,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 12:21:37,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:37,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:21:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:37,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:21:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:37,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:37,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:21:37,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:37,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:21:37,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:37,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:37,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:37,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:21:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:37,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:21:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:37,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:37,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:37,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:37,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:21:37,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:37,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:37,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:21:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:37,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:37,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:37,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:37,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:21:37,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:37,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:37,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:37,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:21:37,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:37,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:21:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:37,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:37,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:37,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:37,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:37,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:37,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:37,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:37,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918491508] [2020-10-29 12:21:37,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:37,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:21:37,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595996670] [2020-10-29 12:21:37,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:21:37,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:37,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:21:37,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:21:37,275 INFO L87 Difference]: Start difference. First operand 6807 states and 9557 transitions. Second operand 9 states. [2020-10-29 12:21:37,586 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:21:40,321 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:21:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:40,632 INFO L93 Difference]: Finished difference Result 15713 states and 22423 transitions. [2020-10-29 12:21:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:21:40,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 12:21:40,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:40,701 INFO L225 Difference]: With dead ends: 15713 [2020-10-29 12:21:40,702 INFO L226 Difference]: Without dead ends: 10526 [2020-10-29 12:21:40,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:21:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10526 states. [2020-10-29 12:21:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10526 to 10263. [2020-10-29 12:21:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10263 states. [2020-10-29 12:21:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10263 states to 10263 states and 14419 transitions. [2020-10-29 12:21:41,793 INFO L78 Accepts]: Start accepts. Automaton has 10263 states and 14419 transitions. Word has length 89 [2020-10-29 12:21:41,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:41,794 INFO L481 AbstractCegarLoop]: Abstraction has 10263 states and 14419 transitions. [2020-10-29 12:21:41,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:41,795 INFO L276 IsEmpty]: Start isEmpty. Operand 10263 states and 14419 transitions. [2020-10-29 12:21:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:21:41,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:41,812 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] [2020-10-29 12:21:41,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:21:41,812 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2032435392, now seen corresponding path program 1 times [2020-10-29 12:21:41,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:41,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013793567] [2020-10-29 12:21:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:41,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:41,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:42,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:46,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:46,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:46,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:21:46,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:21:46,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:21:46,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:46,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:21:46,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:47,160 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:47,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:47,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:47,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:47,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:47,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:47,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:21:47,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:47,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:47,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:47,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:47,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:47,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:47,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:47,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:47,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:47,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:21:47,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:21:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 12:21:47,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:47,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:21:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:21:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:47,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:21:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:47,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:47,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:47,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:21:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:21:47,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:47,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:21:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:47,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:21:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:47,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:47,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:47,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:47,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:47,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:47,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:21:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:47,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:47,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:21:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:21:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:47,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:47,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:47,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:47,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:47,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:47,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:47,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:47,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:47,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:47,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013793567] [2020-10-29 12:21:47,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:47,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:21:47,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110667907] [2020-10-29 12:21:47,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:21:47,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:47,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:21:47,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:21:47,514 INFO L87 Difference]: Start difference. First operand 10263 states and 14419 transitions. Second operand 10 states. [2020-10-29 12:21:47,846 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:48,247 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:48,779 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:21:49,121 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:21:49,533 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:21:49,912 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:21:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:54,513 INFO L93 Difference]: Finished difference Result 22002 states and 31083 transitions. [2020-10-29 12:21:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:21:54,513 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-29 12:21:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:54,575 INFO L225 Difference]: With dead ends: 22002 [2020-10-29 12:21:54,575 INFO L226 Difference]: Without dead ends: 11754 [2020-10-29 12:21:54,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:21:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11754 states. [2020-10-29 12:21:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11754 to 11533. [2020-10-29 12:21:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11533 states. [2020-10-29 12:21:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11533 states to 11533 states and 16032 transitions. [2020-10-29 12:21:55,955 INFO L78 Accepts]: Start accepts. Automaton has 11533 states and 16032 transitions. Word has length 91 [2020-10-29 12:21:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:55,956 INFO L481 AbstractCegarLoop]: Abstraction has 11533 states and 16032 transitions. [2020-10-29 12:21:55,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:21:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 11533 states and 16032 transitions. [2020-10-29 12:21:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:21:55,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:55,976 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] [2020-10-29 12:21:55,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:21:55,977 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:55,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:55,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1335279565, now seen corresponding path program 1 times [2020-10-29 12:21:55,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:55,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824046197] [2020-10-29 12:21:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:56,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:57,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:01,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:01,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:22:01,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:22:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:22:01,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:01,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:22:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 12:22:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:01,323 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:01,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:01,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:01,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:01,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:22:01,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:01,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:01,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:01,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:01,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:22:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:22:01,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:01,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:22:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:22:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:01,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:01,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:01,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:22:01,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:01,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:22:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:01,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:22:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:01,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:01,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:01,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:01,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:01,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:01,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:22:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:22:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:22:01,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:01,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:22:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:22:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:01,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:01,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:01,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:01,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:01,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:01,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:01,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824046197] [2020-10-29 12:22:01,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:01,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:22:01,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697163149] [2020-10-29 12:22:01,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:22:01,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:01,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:22:01,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:22:01,629 INFO L87 Difference]: Start difference. First operand 11533 states and 16032 transitions. Second operand 9 states. [2020-10-29 12:22:02,003 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:02,308 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:22:02,634 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:22:02,942 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:22:03,823 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:22:06,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:06,939 INFO L93 Difference]: Finished difference Result 21468 states and 29883 transitions. [2020-10-29 12:22:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:22:06,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-29 12:22:06,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:06,998 INFO L225 Difference]: With dead ends: 21468 [2020-10-29 12:22:06,999 INFO L226 Difference]: Without dead ends: 10479 [2020-10-29 12:22:07,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:22:07,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10479 states. [2020-10-29 12:22:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10479 to 10152. [2020-10-29 12:22:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10152 states. [2020-10-29 12:22:08,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10152 states to 10152 states and 14130 transitions. [2020-10-29 12:22:08,043 INFO L78 Accepts]: Start accepts. Automaton has 10152 states and 14130 transitions. Word has length 91 [2020-10-29 12:22:08,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:08,043 INFO L481 AbstractCegarLoop]: Abstraction has 10152 states and 14130 transitions. [2020-10-29 12:22:08,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:22:08,044 INFO L276 IsEmpty]: Start isEmpty. Operand 10152 states and 14130 transitions. [2020-10-29 12:22:08,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:22:08,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:08,060 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] [2020-10-29 12:22:08,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:22:08,061 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:08,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2086781172, now seen corresponding path program 1 times [2020-10-29 12:22:08,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:08,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590650557] [2020-10-29 12:22:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:08,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:08,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:08,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:10,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:13,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:13,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:22:13,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:22:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:22:13,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:13,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:22:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 12:22:13,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:13,397 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:13,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:13,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:13,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:13,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:13,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:22:13,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:13,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:13,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:13,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:13,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:13,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:22:13,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:22:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 12:22:13,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:13,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:22:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:22:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:13,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:13,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:22:13,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:13,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:22:13,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:13,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:13,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:13,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:22:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:13,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:22:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:13,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:13,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:13,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:13,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:13,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:13,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:22:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:13,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:22:13,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:13,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:22:13,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:13,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:22:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:22:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:22:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:13,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:13,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:13,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:13,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:22:13,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:13,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:13,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590650557] [2020-10-29 12:22:13,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:13,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:22:13,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428488323] [2020-10-29 12:22:13,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:22:13,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:13,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:22:13,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:22:13,757 INFO L87 Difference]: Start difference. First operand 10152 states and 14130 transitions. Second operand 9 states. [2020-10-29 12:22:14,078 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:14,376 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:22:14,706 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:22:15,192 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:22:15,848 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:22:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:18,506 INFO L93 Difference]: Finished difference Result 19824 states and 27585 transitions. [2020-10-29 12:22:18,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:22:18,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-29 12:22:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:18,549 INFO L225 Difference]: With dead ends: 19824 [2020-10-29 12:22:18,549 INFO L226 Difference]: Without dead ends: 10499 [2020-10-29 12:22:18,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:22:18,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10499 states. [2020-10-29 12:22:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10499 to 9915. [2020-10-29 12:22:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9915 states. [2020-10-29 12:22:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 13715 transitions. [2020-10-29 12:22:19,686 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 13715 transitions. Word has length 92 [2020-10-29 12:22:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:19,686 INFO L481 AbstractCegarLoop]: Abstraction has 9915 states and 13715 transitions. [2020-10-29 12:22:19,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:22:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 13715 transitions. [2020-10-29 12:22:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:22:19,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:19,703 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] [2020-10-29 12:22:19,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:22:19,703 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:19,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1454957325, now seen corresponding path program 1 times [2020-10-29 12:22:19,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:19,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577521800] [2020-10-29 12:22:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:19,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:19,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:20,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:24,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:24,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:22:24,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:22:24,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:22:24,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:24,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:22:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:22:24,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:25,048 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:25,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:25,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:25,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:25,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:22:25,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:25,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:25,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:25,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:25,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:25,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:22:25,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:25,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:22:25,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:25,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:22:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:22:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:25,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:25,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:25,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:22:25,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:25,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:22:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:22:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:25,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:25,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:25,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:25,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:25,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:25,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:22:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:25,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:25,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:22:25,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:25,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:22:25,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:25,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:22:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:22:25,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:25,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:22:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:25,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:25,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:25,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:25,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:25,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:22:25,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:25,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:25,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577521800] [2020-10-29 12:22:25,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:25,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:22:25,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533134159] [2020-10-29 12:22:25,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:22:25,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:25,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:22:25,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:22:25,348 INFO L87 Difference]: Start difference. First operand 9915 states and 13715 transitions. Second operand 9 states. [2020-10-29 12:22:25,674 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:26,015 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:22:26,418 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:22:27,104 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-29 12:22:28,252 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:22:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:32,581 INFO L93 Difference]: Finished difference Result 31400 states and 44365 transitions. [2020-10-29 12:22:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:22:32,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-29 12:22:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:32,681 INFO L225 Difference]: With dead ends: 31400 [2020-10-29 12:22:32,681 INFO L226 Difference]: Without dead ends: 22820 [2020-10-29 12:22:32,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:22:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22820 states. [2020-10-29 12:22:34,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22820 to 22489. [2020-10-29 12:22:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22489 states. [2020-10-29 12:22:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22489 states to 22489 states and 31073 transitions. [2020-10-29 12:22:34,459 INFO L78 Accepts]: Start accepts. Automaton has 22489 states and 31073 transitions. Word has length 92 [2020-10-29 12:22:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:34,460 INFO L481 AbstractCegarLoop]: Abstraction has 22489 states and 31073 transitions. [2020-10-29 12:22:34,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:22:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 22489 states and 31073 transitions. [2020-10-29 12:22:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:22:34,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:34,494 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] [2020-10-29 12:22:34,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:22:34,495 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:34,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:34,495 INFO L82 PathProgramCache]: Analyzing trace with hash -159689577, now seen corresponding path program 1 times [2020-10-29 12:22:34,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:34,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423339745] [2020-10-29 12:22:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:34,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:34,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:35,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:35,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:39,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:39,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:22:39,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:22:39,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:22:39,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:39,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:22:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:22:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:22:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:39,848 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:39,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:39,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:39,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:22:39,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:39,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:22:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:39,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:39,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:39,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:22:39,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:22:39,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:39,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:22:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:22:39,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:22:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:40,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:40,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:40,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:22:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:40,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:22:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:40,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:22:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:40,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:40,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:40,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:40,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:40,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:22:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:40,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:40,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:40,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:22:40,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:40,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:22:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:22:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:22:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:22:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:40,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:40,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:40,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:40,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:40,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:40,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:40,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:40,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:40,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:40,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:40,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:40,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423339745] [2020-10-29 12:22:40,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:40,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:22:40,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195416500] [2020-10-29 12:22:40,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:22:40,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:40,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:22:40,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:22:40,234 INFO L87 Difference]: Start difference. First operand 22489 states and 31073 transitions. Second operand 14 states. [2020-10-29 12:22:40,678 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:22:40,982 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:41,596 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:22:42,271 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:22:46,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:46,159 INFO L93 Difference]: Finished difference Result 32401 states and 44814 transitions. [2020-10-29 12:22:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:22:46,160 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-29 12:22:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:46,294 INFO L225 Difference]: With dead ends: 32401 [2020-10-29 12:22:46,294 INFO L226 Difference]: Without dead ends: 27024 [2020-10-29 12:22:46,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:22:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27024 states. [2020-10-29 12:22:48,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27024 to 25857. [2020-10-29 12:22:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25857 states. [2020-10-29 12:22:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25857 states to 25857 states and 35638 transitions. [2020-10-29 12:22:48,474 INFO L78 Accepts]: Start accepts. Automaton has 25857 states and 35638 transitions. Word has length 93 [2020-10-29 12:22:48,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:48,475 INFO L481 AbstractCegarLoop]: Abstraction has 25857 states and 35638 transitions. [2020-10-29 12:22:48,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:22:48,475 INFO L276 IsEmpty]: Start isEmpty. Operand 25857 states and 35638 transitions. [2020-10-29 12:22:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:22:48,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:48,506 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] [2020-10-29 12:22:48,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:22:48,507 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash -977338027, now seen corresponding path program 1 times [2020-10-29 12:22:48,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:48,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518686389] [2020-10-29 12:22:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:49,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:49,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:53,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:53,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:22:53,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:22:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:22:53,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:53,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:22:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:22:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 12:22:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:53,856 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:53,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:53,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:53,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:53,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:53,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:22:53,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:53,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:22:53,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:53,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:53,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:54,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:54,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:22:54,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:54,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 12:22:54,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:54,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:22:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:22:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:54,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:22:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:54,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:54,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:54,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:54,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:22:54,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:54,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:22:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:22:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:22:54,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:54,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:22:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:54,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:54,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:54,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:54,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:54,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:22:54,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:54,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:54,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:22:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:54,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:54,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:22:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:54,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:22:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:54,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:54,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:54,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:54,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:54,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:54,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518686389] [2020-10-29 12:22:54,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:54,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:22:54,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86330702] [2020-10-29 12:22:54,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:22:54,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:54,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:22:54,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:22:54,318 INFO L87 Difference]: Start difference. First operand 25857 states and 35638 transitions. Second operand 14 states. [2020-10-29 12:22:54,979 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-29 12:22:55,291 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:55,938 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:22:56,809 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-29 12:22:57,008 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:22:57,208 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-29 12:22:57,399 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:22:57,603 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-29 12:22:58,077 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:22:58,466 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:22:59,993 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-29 12:23:00,360 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-29 12:23:00,678 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:23:01,129 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:23:01,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:23:01,737 INFO L93 Difference]: Finished difference Result 39232 states and 54633 transitions. [2020-10-29 12:23:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:23:01,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-29 12:23:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:23:02,026 INFO L225 Difference]: With dead ends: 39232 [2020-10-29 12:23:02,027 INFO L226 Difference]: Without dead ends: 30364 [2020-10-29 12:23:02,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:23:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30364 states. [2020-10-29 12:23:04,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30364 to 27488. [2020-10-29 12:23:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27488 states. [2020-10-29 12:23:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27488 states to 27488 states and 37810 transitions. [2020-10-29 12:23:04,558 INFO L78 Accepts]: Start accepts. Automaton has 27488 states and 37810 transitions. Word has length 93 [2020-10-29 12:23:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:23:04,558 INFO L481 AbstractCegarLoop]: Abstraction has 27488 states and 37810 transitions. [2020-10-29 12:23:04,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:23:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 27488 states and 37810 transitions. [2020-10-29 12:23:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:23:04,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:23:04,577 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] [2020-10-29 12:23:04,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:23:04,578 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:23:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:23:04,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1371704813, now seen corresponding path program 1 times [2020-10-29 12:23:04,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:23:04,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540278012] [2020-10-29 12:23:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:23:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:09,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:09,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:23:09,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:23:09,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:23:09,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:09,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:23:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:23:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 12:23:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:09,955 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:23:09,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:23:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:09,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:09,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:09,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:23:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:23:09,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:09,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:23:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:23:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:09,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:10,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:10,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:23:10,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:23:10,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:10,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:23:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:10,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:23:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:10,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:10,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:10,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:10,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:23:10,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:10,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:23:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:23:10,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:23:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:10,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:10,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:10,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:23:10,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:10,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:23:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:10,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:23:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:10,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:10,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:10,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:10,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:23:10,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:10,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:23:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:10,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:10,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:23:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:10,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:23:10,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540278012] [2020-10-29 12:23:10,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:23:10,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:23:10,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999885031] [2020-10-29 12:23:10,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:23:10,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:23:10,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:23:10,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:23:10,310 INFO L87 Difference]: Start difference. First operand 27488 states and 37810 transitions. Second operand 14 states. [2020-10-29 12:23:10,967 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-29 12:23:11,274 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:23:11,901 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:23:12,766 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-29 12:23:12,955 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:23:13,197 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-29 12:23:13,398 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:23:13,852 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:23:14,371 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:23:15,845 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-29 12:23:16,147 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-29 12:23:16,380 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-29 12:23:16,747 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:23:17,399 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:23:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:23:18,073 INFO L93 Difference]: Finished difference Result 42488 states and 59052 transitions. [2020-10-29 12:23:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:23:18,073 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-29 12:23:18,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:23:18,192 INFO L225 Difference]: With dead ends: 42488 [2020-10-29 12:23:18,192 INFO L226 Difference]: Without dead ends: 31435 [2020-10-29 12:23:18,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:23:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31435 states. [2020-10-29 12:23:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31435 to 26712. [2020-10-29 12:23:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26712 states. [2020-10-29 12:23:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26712 states to 26712 states and 36649 transitions. [2020-10-29 12:23:20,895 INFO L78 Accepts]: Start accepts. Automaton has 26712 states and 36649 transitions. Word has length 93 [2020-10-29 12:23:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:23:20,896 INFO L481 AbstractCegarLoop]: Abstraction has 26712 states and 36649 transitions. [2020-10-29 12:23:20,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:23:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand 26712 states and 36649 transitions. [2020-10-29 12:23:20,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:23:20,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:23:20,912 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] [2020-10-29 12:23:20,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:23:20,912 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:23:20,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:23:20,912 INFO L82 PathProgramCache]: Analyzing trace with hash 679279185, now seen corresponding path program 1 times [2020-10-29 12:23:20,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:23:20,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183130671] [2020-10-29 12:23:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:23:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:21,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:25,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:25,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:23:25,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:23:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:23:25,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:25,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 12:23:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:23:25,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:23:26,277 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:23:26,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:23:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:23:26,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:23:26,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:26,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:26,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:26,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:23:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:26,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:23:26,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:23:26,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:23:26,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:23:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:26,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:23:26,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:23:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:23:26,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:23:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:26,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:23:26,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:23:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:23:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:26,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:26,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:23:26,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:23:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:26,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:26,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:23:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:26,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:23:26,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:23:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:23:26,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183130671] [2020-10-29 12:23:26,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:23:26,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:23:26,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880616504] [2020-10-29 12:23:26,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:23:26,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:23:26,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:23:26,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:23:26,518 INFO L87 Difference]: Start difference. First operand 26712 states and 36649 transitions. Second operand 9 states. [2020-10-29 12:23:26,859 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:23:30,754 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:23:32,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:23:32,186 INFO L93 Difference]: Finished difference Result 57118 states and 78389 transitions. [2020-10-29 12:23:32,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:23:32,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-29 12:23:32,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:23:32,304 INFO L225 Difference]: With dead ends: 57118 [2020-10-29 12:23:32,304 INFO L226 Difference]: Without dead ends: 35998 [2020-10-29 12:23:32,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:23:32,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35998 states. [2020-10-29 12:23:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35998 to 35228. [2020-10-29 12:23:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35228 states. [2020-10-29 12:23:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35228 states to 35228 states and 47558 transitions. [2020-10-29 12:23:35,977 INFO L78 Accepts]: Start accepts. Automaton has 35228 states and 47558 transitions. Word has length 93 [2020-10-29 12:23:35,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:23:35,978 INFO L481 AbstractCegarLoop]: Abstraction has 35228 states and 47558 transitions. [2020-10-29 12:23:35,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:23:35,978 INFO L276 IsEmpty]: Start isEmpty. Operand 35228 states and 47558 transitions. [2020-10-29 12:23:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 12:23:35,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:23:35,994 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] [2020-10-29 12:23:35,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:23:35,994 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:23:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:23:35,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1891716924, now seen corresponding path program 1 times [2020-10-29 12:23:35,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:23:35,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605723262] [2020-10-29 12:23:35,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:23:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:36,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:36,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:41,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:41,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 12:23:41,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:23:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:23:41,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:41,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:23:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 12:23:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:23:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:41,332 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:23:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:23:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:41,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:41,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:23:41,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:41,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:23:41,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:41,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:41,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:41,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:41,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:41,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:23:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:41,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:41,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:41,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:23:41,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:23:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-29 12:23:41,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:41,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:23:41,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:23:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:41,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:41,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:23:41,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:23:41,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:41,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:23:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:23:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:23:41,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:41,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:23:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:41,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:41,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:23:41,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:23:41,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:41,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:23:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:23:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:41,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:41,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:41,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:23:41,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:41,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:23:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:23:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:23:41,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605723262] [2020-10-29 12:23:41,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:23:41,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:23:41,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701146288] [2020-10-29 12:23:41,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:23:41,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:23:41,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:23:41,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:23:41,892 INFO L87 Difference]: Start difference. First operand 35228 states and 47558 transitions. Second operand 13 states. [2020-10-29 12:23:42,264 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:23:42,882 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:23:43,196 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:23:46,050 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:23:46,354 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:23:46,807 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:23:47,893 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:23:51,253 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 64