/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:32:15,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:32:15,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:32:15,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:32:15,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:32:15,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:32:15,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:32:15,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:32:15,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:32:15,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:32:15,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:32:15,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:32:15,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:32:15,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:32:15,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:32:15,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:32:15,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:32:15,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:32:15,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:32:15,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:32:15,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:32:15,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:32:15,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:32:15,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:32:15,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:32:15,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:32:15,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:32:15,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:32:15,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:32:15,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:32:15,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:32:15,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:32:15,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:32:15,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:32:15,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:32:15,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:32:15,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:32:15,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:32:15,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:32:15,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:32:15,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:32:15,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:32:15,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:32:15,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:32:15,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:32:15,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:32:15,971 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:32:15,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:32:15,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:32:15,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:32:15,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:32:15,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:32:15,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:32:15,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:32:15,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:32:15,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:32:15,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:32:15,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:32:15,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:32:15,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:32:15,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:32:15,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:32:15,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:32:15,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:32:15,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:32:15,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:32:15,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:32:15,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:32:15,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:32:15,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:32:15,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:32:15,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:32:16,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:32:16,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:32:16,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:32:16,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:32:16,448 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:32:16,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c [2020-10-27 04:32:16,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a63bed1f5/2a893d42ca0b4ae4b652f4eae483220d/FLAG8895af274 [2020-10-27 04:32:17,130 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:32:17,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c [2020-10-27 04:32:17,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a63bed1f5/2a893d42ca0b4ae4b652f4eae483220d/FLAG8895af274 [2020-10-27 04:32:17,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a63bed1f5/2a893d42ca0b4ae4b652f4eae483220d [2020-10-27 04:32:17,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:32:17,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:32:17,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:32:17,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:32:17,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:32:17,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:32:17" (1/1) ... [2020-10-27 04:32:17,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@baf311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17, skipping insertion in model container [2020-10-27 04:32:17,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:32:17" (1/1) ... [2020-10-27 04:32:17,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:32:17,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:32:17,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:32:17,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:32:17,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:32:17,858 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:32:17,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17 WrapperNode [2020-10-27 04:32:17,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:32:17,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:32:17,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:32:17,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:32:17,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17" (1/1) ... [2020-10-27 04:32:17,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17" (1/1) ... [2020-10-27 04:32:17,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17" (1/1) ... [2020-10-27 04:32:17,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17" (1/1) ... [2020-10-27 04:32:17,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17" (1/1) ... [2020-10-27 04:32:17,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17" (1/1) ... [2020-10-27 04:32:17,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17" (1/1) ... [2020-10-27 04:32:17,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:32:17,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:32:17,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:32:17,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:32:17,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:32:18,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:32:18,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:32:18,032 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:32:18,033 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:32:18,033 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:32:18,033 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:32:18,033 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:32:18,033 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:32:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:32:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:32:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:32:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:32:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:32:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:32:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:32:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:32:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:32:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:32:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:32:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:32:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:32:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:32:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:32:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:32:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:32:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:32:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:32:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:32:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:32:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:32:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:32:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:32:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:32:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:32:18,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:32:18,981 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:32:18,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:32:18 BoogieIcfgContainer [2020-10-27 04:32:18,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:32:18,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:32:18,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:32:18,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:32:18,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:32:17" (1/3) ... [2020-10-27 04:32:18,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bdc24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:32:18, skipping insertion in model container [2020-10-27 04:32:18,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:17" (2/3) ... [2020-10-27 04:32:18,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bdc24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:32:18, skipping insertion in model container [2020-10-27 04:32:18,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:32:18" (3/3) ... [2020-10-27 04:32:18,996 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c [2020-10-27 04:32:19,009 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:32:19,019 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:32:19,035 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:32:19,072 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:32:19,072 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:32:19,072 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:32:19,072 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:32:19,073 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:32:19,073 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:32:19,073 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:32:19,073 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:32:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-10-27 04:32:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 04:32:19,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:19,105 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] [2020-10-27 04:32:19,105 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:19,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1378511401, now seen corresponding path program 1 times [2020-10-27 04:32:19,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:19,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583552802] [2020-10-27 04:32:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:20,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:20,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 04:32:20,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:20,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 913 [2020-10-27 04:32:20,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:32:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:32:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:32:20,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:32:20,516 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:20,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:20,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:20,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 04:32:20,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:20,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:20,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:20,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:20,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:32:20,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:32:20,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:32:20,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:32:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:20,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:20,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:20,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:32:20,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:32:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:20,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 04:32:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:20,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:20,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:20,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:20,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:32:20,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:32:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:20,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:20,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:32:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:20,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:20,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:20,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:20,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:32:20,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:32:20,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:32:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:20,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:20,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:20,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:32:20,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:32:20,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:32:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:20,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:20,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:32:20,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:20,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:32:20,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:32:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:20,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583552802] [2020-10-27 04:32:20,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:20,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:32:20,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052022736] [2020-10-27 04:32:20,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:32:20,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:20,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:32:20,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:32:20,998 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 12 states. [2020-10-27 04:32:21,248 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:32:21,407 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:32:21,653 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 04:32:21,833 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 04:32:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:22,884 INFO L93 Difference]: Finished difference Result 199 states and 288 transitions. [2020-10-27 04:32:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:32:22,887 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-27 04:32:22,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:22,898 INFO L225 Difference]: With dead ends: 199 [2020-10-27 04:32:22,898 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 04:32:22,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:32:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 04:32:22,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2020-10-27 04:32:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-27 04:32:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 138 transitions. [2020-10-27 04:32:22,960 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 138 transitions. Word has length 55 [2020-10-27 04:32:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:22,960 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 138 transitions. [2020-10-27 04:32:22,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:32:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 138 transitions. [2020-10-27 04:32:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 04:32:22,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:22,964 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] [2020-10-27 04:32:22,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:32:22,964 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:22,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1252669535, now seen corresponding path program 1 times [2020-10-27 04:32:22,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:22,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149045103] [2020-10-27 04:32:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:25,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:25,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 04:32:25,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:32:25,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2014 [2020-10-27 04:32:25,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:25,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:32:25,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 04:32:25,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 04:32:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:32:25,188 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:25,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:25,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:25,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:25,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:32:25,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:25,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:25,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:25,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:25,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:25,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:25,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:25,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:32:25,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:32:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:25,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:25,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:25,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:25,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:25,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:32:25,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:25,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:25,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:25,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:32:25,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:32:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:32:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:32:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:25,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:25,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:25,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:25,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:32:25,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:32:25,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:32:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:25,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:25,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:25,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:25,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:32:25,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:32:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:32:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:25,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:32:25,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:32:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:32:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:32:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:25,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149045103] [2020-10-27 04:32:25,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:25,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:32:25,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695510003] [2020-10-27 04:32:25,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:32:25,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:25,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:32:25,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:32:25,576 INFO L87 Difference]: Start difference. First operand 107 states and 138 transitions. Second operand 13 states. [2020-10-27 04:32:25,803 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:32:26,010 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:32:26,188 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:32:27,850 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:32:28,005 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 04:32:28,165 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:32:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:30,739 INFO L93 Difference]: Finished difference Result 654 states and 917 transitions. [2020-10-27 04:32:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 04:32:30,740 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-27 04:32:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:30,751 INFO L225 Difference]: With dead ends: 654 [2020-10-27 04:32:30,751 INFO L226 Difference]: Without dead ends: 582 [2020-10-27 04:32:30,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=577, Invalid=1973, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:32:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-27 04:32:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 536. [2020-10-27 04:32:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-27 04:32:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 765 transitions. [2020-10-27 04:32:30,875 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 765 transitions. Word has length 71 [2020-10-27 04:32:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:30,875 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 765 transitions. [2020-10-27 04:32:30,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:32:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 765 transitions. [2020-10-27 04:32:30,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 04:32:30,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:30,881 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] [2020-10-27 04:32:30,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:32:30,881 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:30,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:30,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1568544618, now seen corresponding path program 1 times [2020-10-27 04:32:30,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:30,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267719709] [2020-10-27 04:32:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:30,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:35,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:35,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 04:32:35,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:32:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:32:35,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:32:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:32:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:36,108 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:36,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:36,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:36,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:36,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:32:36,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:36,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:36,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:36,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:36,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:36,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:36,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:32:36,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:32:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:36,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:36,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:36,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:36,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:36,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:32:36,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:36,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:36,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:36,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:36,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:32:36,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:32:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:32:36,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:32:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:36,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:36,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:36,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:36,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:32:36,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:32:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:36,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:32:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:36,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:36,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:36,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:32:36,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:36,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:32:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:36,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:36,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:36,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:36,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:32:36,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:36,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:36,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:36,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:36,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:36,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267719709] [2020-10-27 04:32:36,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:36,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:32:36,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781651089] [2020-10-27 04:32:36,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:32:36,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:36,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:32:36,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:32:36,415 INFO L87 Difference]: Start difference. First operand 536 states and 765 transitions. Second operand 9 states. [2020-10-27 04:32:36,600 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:32:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:38,072 INFO L93 Difference]: Finished difference Result 1497 states and 2144 transitions. [2020-10-27 04:32:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:32:38,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-27 04:32:38,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:38,097 INFO L225 Difference]: With dead ends: 1497 [2020-10-27 04:32:38,097 INFO L226 Difference]: Without dead ends: 996 [2020-10-27 04:32:38,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:32:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-10-27 04:32:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 944. [2020-10-27 04:32:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-10-27 04:32:38,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1342 transitions. [2020-10-27 04:32:38,250 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1342 transitions. Word has length 72 [2020-10-27 04:32:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:38,253 INFO L481 AbstractCegarLoop]: Abstraction has 944 states and 1342 transitions. [2020-10-27 04:32:38,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:32:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1342 transitions. [2020-10-27 04:32:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 04:32:38,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:38,263 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] [2020-10-27 04:32:38,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:32:38,263 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:38,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1165278196, now seen corresponding path program 1 times [2020-10-27 04:32:38,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:38,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167311533] [2020-10-27 04:32:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:38,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:39,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:39,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 04:32:39,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:32:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-27 04:32:39,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 04:32:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:32:39,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:39,611 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:39,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:39,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:39,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:32:39,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:39,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:39,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:39,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:39,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:39,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:39,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:32:39,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:32:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:39,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:39,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:39,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:39,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:39,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:39,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:39,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:39,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:32:39,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:32:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:32:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:39,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:39,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:39,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:39,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:39,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:32:39,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:32:39,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:39,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:32:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:39,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:39,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:39,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:39,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:32:39,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:32:39,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:39,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:32:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:39,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:39,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:39,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:39,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:39,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:39,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:39,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:39,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:39,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:39,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167311533] [2020-10-27 04:32:39,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:39,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:32:39,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052142288] [2020-10-27 04:32:39,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:32:39,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:39,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:32:39,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:32:39,861 INFO L87 Difference]: Start difference. First operand 944 states and 1342 transitions. Second operand 9 states. [2020-10-27 04:32:40,055 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:32:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:41,644 INFO L93 Difference]: Finished difference Result 2660 states and 3776 transitions. [2020-10-27 04:32:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:32:41,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-27 04:32:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:41,657 INFO L225 Difference]: With dead ends: 2660 [2020-10-27 04:32:41,657 INFO L226 Difference]: Without dead ends: 1751 [2020-10-27 04:32:41,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:32:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-10-27 04:32:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1664. [2020-10-27 04:32:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-10-27 04:32:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2341 transitions. [2020-10-27 04:32:41,808 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2341 transitions. Word has length 73 [2020-10-27 04:32:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:41,808 INFO L481 AbstractCegarLoop]: Abstraction has 1664 states and 2341 transitions. [2020-10-27 04:32:41,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:32:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2341 transitions. [2020-10-27 04:32:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 04:32:41,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:41,810 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] [2020-10-27 04:32:41,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:32:41,810 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:41,811 INFO L82 PathProgramCache]: Analyzing trace with hash 233546362, now seen corresponding path program 1 times [2020-10-27 04:32:41,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:41,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858792957] [2020-10-27 04:32:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:41,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:42,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:42,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 04:32:42,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:32:42,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-27 04:32:42,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:32:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:32:42,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:42,778 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:42,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:42,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:42,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:32:42,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:42,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:32:42,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:32:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:42,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:42,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:42,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:42,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:32:42,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:42,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:42,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:42,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:42,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:32:42,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:32:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:32:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:42,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:32:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:42,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:42,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:42,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:42,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:42,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:32:42,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:32:42,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:42,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:32:42,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:43,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:32:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:43,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:43,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:43,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:43,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:32:43,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:32:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:43,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:32:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:43,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:43,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:43,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:43,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:43,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:43,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:43,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858792957] [2020-10-27 04:32:43,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:43,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:32:43,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718204022] [2020-10-27 04:32:43,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:32:43,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:43,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:32:43,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:32:43,078 INFO L87 Difference]: Start difference. First operand 1664 states and 2341 transitions. Second operand 12 states. [2020-10-27 04:32:43,312 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:32:43,525 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 04:32:43,981 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 04:32:44,417 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 04:32:44,578 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:32:44,748 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 04:32:45,482 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 04:32:45,667 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:32:45,859 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 04:32:46,046 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:32:46,237 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:32:46,417 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:32:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:51,346 INFO L93 Difference]: Finished difference Result 10371 states and 14945 transitions. [2020-10-27 04:32:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 04:32:51,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-27 04:32:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:51,407 INFO L225 Difference]: With dead ends: 10371 [2020-10-27 04:32:51,407 INFO L226 Difference]: Without dead ends: 8742 [2020-10-27 04:32:51,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=594, Invalid=2828, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 04:32:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8742 states. [2020-10-27 04:32:52,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8742 to 8420. [2020-10-27 04:32:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8420 states. [2020-10-27 04:32:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8420 states to 8420 states and 11243 transitions. [2020-10-27 04:32:52,237 INFO L78 Accepts]: Start accepts. Automaton has 8420 states and 11243 transitions. Word has length 74 [2020-10-27 04:32:52,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:52,237 INFO L481 AbstractCegarLoop]: Abstraction has 8420 states and 11243 transitions. [2020-10-27 04:32:52,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:32:52,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8420 states and 11243 transitions. [2020-10-27 04:32:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 04:32:52,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:52,240 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] [2020-10-27 04:32:52,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:32:52,240 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash 496075191, now seen corresponding path program 1 times [2020-10-27 04:32:52,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:52,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132202003] [2020-10-27 04:32:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:52,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:54,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:54,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:32:54,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:32:54,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1921 [2020-10-27 04:32:54,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:54,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:54,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:32:54,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:32:54,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:54,352 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:54,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:54,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:54,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:32:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:54,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:54,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:54,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:54,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:54,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:32:54,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:54,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:32:54,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:54,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:54,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:54,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:54,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:54,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:54,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:54,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:54,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:54,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:54,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:32:54,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:54,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:32:54,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:32:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:32:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:54,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:54,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:54,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:54,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:32:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:54,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:32:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:54,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:54,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:54,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:54,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:54,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:32:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:32:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:54,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:54,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:54,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:54,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:32:54,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:54,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:54,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:54,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:54,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:54,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132202003] [2020-10-27 04:32:54,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:54,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:32:54,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672721838] [2020-10-27 04:32:54,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:32:54,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:54,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:32:54,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:32:54,579 INFO L87 Difference]: Start difference. First operand 8420 states and 11243 transitions. Second operand 9 states. [2020-10-27 04:32:54,751 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:32:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:32:56,954 INFO L93 Difference]: Finished difference Result 23543 states and 31822 transitions. [2020-10-27 04:32:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:32:56,954 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-27 04:32:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:32:57,076 INFO L225 Difference]: With dead ends: 23543 [2020-10-27 04:32:57,076 INFO L226 Difference]: Without dead ends: 15171 [2020-10-27 04:32:57,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:32:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15171 states. [2020-10-27 04:32:58,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15171 to 14264. [2020-10-27 04:32:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14264 states. [2020-10-27 04:32:58,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14264 states to 14264 states and 19142 transitions. [2020-10-27 04:32:58,493 INFO L78 Accepts]: Start accepts. Automaton has 14264 states and 19142 transitions. Word has length 75 [2020-10-27 04:32:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:32:58,494 INFO L481 AbstractCegarLoop]: Abstraction has 14264 states and 19142 transitions. [2020-10-27 04:32:58,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:32:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 14264 states and 19142 transitions. [2020-10-27 04:32:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 04:32:58,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:32:58,497 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] [2020-10-27 04:32:58,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:32:58,497 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:32:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:32:58,498 INFO L82 PathProgramCache]: Analyzing trace with hash 101708405, now seen corresponding path program 1 times [2020-10-27 04:32:58,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:32:58,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681560068] [2020-10-27 04:32:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:32:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:59,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:59,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:32:59,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:32:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-10-27 04:32:59,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:32:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:32:59,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:59,483 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:32:59,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:32:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:59,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:59,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:59,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:32:59,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:59,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:32:59,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:59,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:32:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:59,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:59,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:32:59,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:32:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:32:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:59,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:32:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:59,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:59,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:59,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:32:59,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:59,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:59,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:32:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:32:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:32:59,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:32:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:59,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:59,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:59,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:32:59,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:59,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:32:59,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:32:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:32:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:32:59,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:59,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:32:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:59,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:59,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:59,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:59,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:32:59,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:59,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:59,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:32:59,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:32:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:59,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:59,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:32:59,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:32:59,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:32:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:32:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:32:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:32:59,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:32:59,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:32:59,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:32:59,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:32:59,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:32:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:32:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:32:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:32:59,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:32:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:32:59,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681560068] [2020-10-27 04:32:59,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:32:59,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:32:59,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121774539] [2020-10-27 04:32:59,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:32:59,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:32:59,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:32:59,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:32:59,701 INFO L87 Difference]: Start difference. First operand 14264 states and 19142 transitions. Second operand 9 states. [2020-10-27 04:32:59,893 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:33:00,680 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:33:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:02,884 INFO L93 Difference]: Finished difference Result 30364 states and 41180 transitions. [2020-10-27 04:33:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:33:02,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-27 04:33:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:03,003 INFO L225 Difference]: With dead ends: 30364 [2020-10-27 04:33:03,003 INFO L226 Difference]: Without dead ends: 20987 [2020-10-27 04:33:03,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:33:03,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20987 states. [2020-10-27 04:33:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20987 to 20674. [2020-10-27 04:33:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20674 states. [2020-10-27 04:33:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20674 states to 20674 states and 27429 transitions. [2020-10-27 04:33:04,810 INFO L78 Accepts]: Start accepts. Automaton has 20674 states and 27429 transitions. Word has length 75 [2020-10-27 04:33:04,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:04,811 INFO L481 AbstractCegarLoop]: Abstraction has 20674 states and 27429 transitions. [2020-10-27 04:33:04,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:33:04,811 INFO L276 IsEmpty]: Start isEmpty. Operand 20674 states and 27429 transitions. [2020-10-27 04:33:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 04:33:04,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:04,812 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] [2020-10-27 04:33:04,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:33:04,813 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:04,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:04,814 INFO L82 PathProgramCache]: Analyzing trace with hash -394840157, now seen corresponding path program 1 times [2020-10-27 04:33:04,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:04,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794632095] [2020-10-27 04:33:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:05,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:05,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:33:05,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:05,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 04:33:05,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:33:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 04:33:05,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:33:05,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:05,432 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:05,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:05,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:05,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:33:05,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:05,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:05,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:05,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:05,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:05,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:05,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:05,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:05,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:05,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:33:05,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:05,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:05,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:05,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:05,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:05,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:05,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:05,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:33:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:05,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:05,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:05,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:33:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:05,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:05,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:05,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:05,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:05,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:05,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:33:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:05,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:05,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:05,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:05,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:33:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:33:05,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794632095] [2020-10-27 04:33:05,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:33:05,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:33:05,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964744511] [2020-10-27 04:33:05,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:33:05,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:05,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:33:05,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:33:05,617 INFO L87 Difference]: Start difference. First operand 20674 states and 27429 transitions. Second operand 12 states. [2020-10-27 04:33:06,517 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:33:06,695 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:33:06,889 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:33:07,089 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:33:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:09,110 INFO L93 Difference]: Finished difference Result 24523 states and 33471 transitions. [2020-10-27 04:33:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:33:09,111 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-10-27 04:33:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:09,226 INFO L225 Difference]: With dead ends: 24523 [2020-10-27 04:33:09,227 INFO L226 Difference]: Without dead ends: 24520 [2020-10-27 04:33:09,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:33:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24520 states. [2020-10-27 04:33:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24520 to 22402. [2020-10-27 04:33:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22402 states. [2020-10-27 04:33:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22402 states to 22402 states and 29089 transitions. [2020-10-27 04:33:11,301 INFO L78 Accepts]: Start accepts. Automaton has 22402 states and 29089 transitions. Word has length 75 [2020-10-27 04:33:11,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:11,302 INFO L481 AbstractCegarLoop]: Abstraction has 22402 states and 29089 transitions. [2020-10-27 04:33:11,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:33:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 22402 states and 29089 transitions. [2020-10-27 04:33:11,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:33:11,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:11,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:33:11,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:33:11,314 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:11,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1280967514, now seen corresponding path program 1 times [2020-10-27 04:33:11,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:11,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974015965] [2020-10-27 04:33:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:11,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:14,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:14,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 04:33:14,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:33:14,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3216 [2020-10-27 04:33:14,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:33:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:33:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:33:14,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:14,778 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:14,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:14,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:14,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:14,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:14,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:33:14,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:14,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:14,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:14,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:14,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:14,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:33:14,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:33:14,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:14,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:14,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:14,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:14,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:14,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:14,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:14,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:14,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:14,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:14,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:14,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:33:14,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:33:14,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:33:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:14,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:14,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:14,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:14,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:33:14,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:33:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:33:14,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:15,257 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2020-10-27 04:33:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:33:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:15,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:15,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:15,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:15,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:33:15,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:33:15,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:15,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:33:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:15,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:15,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:15,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:15,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:33:15,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:33:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:15,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:15,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:15,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:15,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:15,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:15,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:33:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:15,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:15,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:15,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:33:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:33:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:15,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:15,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:15,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:33:15,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:33:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 04:33:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:15,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:15,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:15,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:15,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:33:15,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:33:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:33:15,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:15,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 04:33:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:15,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:15,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:15,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:15,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:15,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:15,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:33:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 04:33:15,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974015965] [2020-10-27 04:33:15,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:33:15,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:33:15,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970204736] [2020-10-27 04:33:15,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:33:15,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:15,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:33:15,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:33:15,499 INFO L87 Difference]: Start difference. First operand 22402 states and 29089 transitions. Second operand 15 states. [2020-10-27 04:33:15,709 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:33:16,087 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:33:16,729 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 138 [2020-10-27 04:33:17,135 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:33:17,635 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:33:18,671 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2020-10-27 04:33:19,199 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:33:21,450 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 04:33:24,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:24,032 INFO L93 Difference]: Finished difference Result 83103 states and 107727 transitions. [2020-10-27 04:33:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 04:33:24,033 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 114 [2020-10-27 04:33:24,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:24,538 INFO L225 Difference]: With dead ends: 83103 [2020-10-27 04:33:24,538 INFO L226 Difference]: Without dead ends: 62252 [2020-10-27 04:33:24,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=479, Invalid=1971, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 04:33:24,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62252 states. [2020-10-27 04:33:29,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62252 to 59936. [2020-10-27 04:33:29,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59936 states. [2020-10-27 04:33:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59936 states to 59936 states and 77791 transitions. [2020-10-27 04:33:29,618 INFO L78 Accepts]: Start accepts. Automaton has 59936 states and 77791 transitions. Word has length 114 [2020-10-27 04:33:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:29,619 INFO L481 AbstractCegarLoop]: Abstraction has 59936 states and 77791 transitions. [2020-10-27 04:33:29,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:33:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 59936 states and 77791 transitions. [2020-10-27 04:33:29,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:33:29,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:29,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:33:29,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:33:29,643 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:29,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:29,643 INFO L82 PathProgramCache]: Analyzing trace with hash -2012934940, now seen corresponding path program 1 times [2020-10-27 04:33:29,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:29,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053684006] [2020-10-27 04:33:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:29,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 04:33:32,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:33:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2542 [2020-10-27 04:33:32,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:33:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:33:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:33:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,414 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:32,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:33:32,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:32,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:33:32,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:32,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:33:32,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:33:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:32,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:32,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:32,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:32,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:33:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:33:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:32,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:33:32,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:33:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:33:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:32,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:32,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:32,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:33:32,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:33:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:32,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:32,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:33:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:32,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:32,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:33:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:32,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:33:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:32,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:32,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:32,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:33:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:32,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:33:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:32,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:32,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 04:33:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:32,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:32,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 04:33:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:32,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:32,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:32,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:32,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:32,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:33:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:32,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 04:33:32,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053684006] [2020-10-27 04:33:32,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:33:32,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:33:32,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991076434] [2020-10-27 04:33:32,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:33:32,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:32,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:33:32,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:33:32,785 INFO L87 Difference]: Start difference. First operand 59936 states and 77791 transitions. Second operand 13 states. [2020-10-27 04:33:33,198 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-27 04:33:33,391 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:33:33,628 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:33:34,150 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-27 04:33:36,851 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:33:37,041 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:33:37,600 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 04:33:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:42,050 INFO L93 Difference]: Finished difference Result 133067 states and 173579 transitions. [2020-10-27 04:33:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:33:42,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-27 04:33:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:42,614 INFO L225 Difference]: With dead ends: 133067 [2020-10-27 04:33:42,614 INFO L226 Difference]: Without dead ends: 73018 [2020-10-27 04:33:42,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=439, Invalid=1283, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:33:42,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73018 states. [2020-10-27 04:33:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73018 to 69787. [2020-10-27 04:33:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69787 states. [2020-10-27 04:33:48,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69787 states to 69787 states and 89860 transitions. [2020-10-27 04:33:48,011 INFO L78 Accepts]: Start accepts. Automaton has 69787 states and 89860 transitions. Word has length 114 [2020-10-27 04:33:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:48,012 INFO L481 AbstractCegarLoop]: Abstraction has 69787 states and 89860 transitions. [2020-10-27 04:33:48,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:33:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 69787 states and 89860 transitions. [2020-10-27 04:33:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:33:48,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:48,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:33:48,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:33:48,027 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:48,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1780384822, now seen corresponding path program 1 times [2020-10-27 04:33:48,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:48,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359621717] [2020-10-27 04:33:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 04:33:50,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:33:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-10-27 04:33:50,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:33:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:33:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 04:33:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,382 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:33:50,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:50,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:33:50,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:33:50,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:33:50,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:33:50,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:33:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:50,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:50,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:33:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:50,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:33:50,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:50,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:50,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:33:50,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:33:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:50,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:50,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:33:50,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:33:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:50,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:33:50,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:33:50,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:33:50,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,815 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-27 04:33:50,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:33:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:50,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:33:50,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:33:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:33:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:33:50,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:33:50,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:50,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:33:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:33:50,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:33:50,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:33:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:33:50,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:33:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:50,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:50,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:50,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:33:51,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 04:33:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:51,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:51,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 04:33:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:51,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:51,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:33:51,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:51,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:33:51,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:33:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:51,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 04:33:51,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359621717] [2020-10-27 04:33:51,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:33:51,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:33:51,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826373260] [2020-10-27 04:33:51,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:33:51,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:51,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:33:51,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:33:51,048 INFO L87 Difference]: Start difference. First operand 69787 states and 89860 transitions. Second operand 15 states. [2020-10-27 04:33:51,272 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:33:51,649 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:33:52,498 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2020-10-27 04:33:52,973 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:33:54,706 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2020-10-27 04:33:56,793 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:34:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:04,872 INFO L93 Difference]: Finished difference Result 217034 states and 278909 transitions. [2020-10-27 04:34:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:34:04,873 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 114 [2020-10-27 04:34:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:05,982 INFO L225 Difference]: With dead ends: 217034 [2020-10-27 04:34:05,982 INFO L226 Difference]: Without dead ends: 177263 [2020-10-27 04:34:06,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:34:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177263 states. [2020-10-27 04:34:17,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177263 to 168780. [2020-10-27 04:34:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168780 states. [2020-10-27 04:34:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168780 states to 168780 states and 217208 transitions. [2020-10-27 04:34:18,523 INFO L78 Accepts]: Start accepts. Automaton has 168780 states and 217208 transitions. Word has length 114 [2020-10-27 04:34:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:18,524 INFO L481 AbstractCegarLoop]: Abstraction has 168780 states and 217208 transitions. [2020-10-27 04:34:18,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:34:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 168780 states and 217208 transitions. [2020-10-27 04:34:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:34:18,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:18,546 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:34:18,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:34:18,546 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:18,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:18,547 INFO L82 PathProgramCache]: Analyzing trace with hash 396854871, now seen corresponding path program 1 times [2020-10-27 04:34:18,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:18,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074423678] [2020-10-27 04:34:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:19,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 04:34:23,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:34:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:34:23,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:34:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:34:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 04:34:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,825 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:34:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:23,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:34:23,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:34:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:34:23,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:34:23,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:34:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:34:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:34:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:23,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:34:23,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:34:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:23,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:34:23,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:34:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:24,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:34:24,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:34:24,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:34:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:34:24,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:34:24,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:34:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:34:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:24,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:24,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:34:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:24,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:24,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:34:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:24,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:24,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:24,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:34:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:24,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:34:24,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:24,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 04:34:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:34:24,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:34:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:34:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:34:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:34:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:24,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:24,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:34:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 04:34:24,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074423678] [2020-10-27 04:34:24,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:34:24,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:34:24,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219666341] [2020-10-27 04:34:24,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:34:24,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:24,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:34:24,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:34:24,301 INFO L87 Difference]: Start difference. First operand 168780 states and 217208 transitions. Second operand 15 states. [2020-10-27 04:34:24,671 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-27 04:34:24,877 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:34:25,521 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2020-10-27 04:34:26,388 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-27 04:34:27,135 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-27 04:34:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:42,164 INFO L93 Difference]: Finished difference Result 331273 states and 426862 transitions. [2020-10-27 04:34:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 04:34:42,165 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 114 [2020-10-27 04:34:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:43,380 INFO L225 Difference]: With dead ends: 331273 [2020-10-27 04:34:43,381 INFO L226 Difference]: Without dead ends: 219709 [2020-10-27 04:34:43,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 04:34:43,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219709 states. [2020-10-27 04:34:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219709 to 214201. [2020-10-27 04:34:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214201 states. [2020-10-27 04:34:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214201 states to 214201 states and 274395 transitions. [2020-10-27 04:34:59,993 INFO L78 Accepts]: Start accepts. Automaton has 214201 states and 274395 transitions. Word has length 114 [2020-10-27 04:34:59,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:59,993 INFO L481 AbstractCegarLoop]: Abstraction has 214201 states and 274395 transitions. [2020-10-27 04:34:59,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:34:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 214201 states and 274395 transitions. [2020-10-27 04:35:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:35:00,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:00,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:35:00,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:35:00,030 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:00,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1346655736, now seen corresponding path program 1 times [2020-10-27 04:35:00,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:00,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375495098] [2020-10-27 04:35:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 04:35:02,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:35:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-10-27 04:35:02,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:35:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:35:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:35:02,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,211 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:35:02,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:02,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:35:02,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:35:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:35:02,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:35:02,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:35:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:35:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:02,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:02,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:35:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:35:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:35:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:02,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:35:02,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:35:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:35:02,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:35:02,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:35:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 04:35:02,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:35:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:02,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:02,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:02,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:02,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:02,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:35:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:02,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:35:02,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:35:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:35:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:35:02,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:02,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:35:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:02,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:35:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 04:35:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:02,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:02,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 04:35:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:02,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:02,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:35:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-27 04:35:02,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375495098] [2020-10-27 04:35:02,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:35:02,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:35:02,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360287729] [2020-10-27 04:35:02,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:35:02,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:02,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:35:02,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:35:02,606 INFO L87 Difference]: Start difference. First operand 214201 states and 274395 transitions. Second operand 13 states. [2020-10-27 04:35:02,984 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-27 04:35:03,177 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:35:03,429 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:35:03,887 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-27 04:35:06,965 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:35:07,142 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:35:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:21,654 INFO L93 Difference]: Finished difference Result 438709 states and 565438 transitions. [2020-10-27 04:35:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 04:35:21,655 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-27 04:35:21,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:22,572 INFO L225 Difference]: With dead ends: 438709 [2020-10-27 04:35:22,572 INFO L226 Difference]: Without dead ends: 223594 [2020-10-27 04:35:23,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:35:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223594 states.