/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive/gcd02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:01:07,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:01:07,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:01:07,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:01:07,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:01:07,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:01:07,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:01:07,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:01:07,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:01:07,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:01:07,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:01:07,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:01:07,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:01:07,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:01:07,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:01:07,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:01:07,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:01:07,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:01:07,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:01:07,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:01:07,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:01:07,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:01:07,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:01:07,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:01:07,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:01:07,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:01:07,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:01:08,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:01:08,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:01:08,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:01:08,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:01:08,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:01:08,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:01:08,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:01:08,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:01:08,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:01:08,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:01:08,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:01:08,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:01:08,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:01:08,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:01:08,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:01:08,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:01:08,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:01:08,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:01:08,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:01:08,096 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:01:08,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:01:08,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:01:08,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:01:08,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:01:08,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:01:08,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:01:08,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:01:08,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:01:08,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:01:08,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:01:08,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:01:08,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:01:08,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:01:08,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:01:08,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:01:08,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:01:08,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:01:08,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:01:08,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:01:08,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:01:08,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:01:08,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:01:08,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:01:08,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:01:08,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:01:08,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:01:08,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:01:08,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:01:08,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:01:08,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:01:08,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd02.c [2020-10-29 12:01:08,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36e3dadb4/232252899751420eb62a97193374ce5d/FLAGc1b81a4fa [2020-10-29 12:01:09,350 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:01:09,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd02.c [2020-10-29 12:01:09,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36e3dadb4/232252899751420eb62a97193374ce5d/FLAGc1b81a4fa [2020-10-29 12:01:09,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36e3dadb4/232252899751420eb62a97193374ce5d [2020-10-29 12:01:09,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:01:09,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:01:09,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:01:09,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:01:09,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:01:09,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:01:09" (1/1) ... [2020-10-29 12:01:09,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c0771e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09, skipping insertion in model container [2020-10-29 12:01:09,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:01:09" (1/1) ... [2020-10-29 12:01:09,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:01:09,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:01:09,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:01:09,934 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:01:09,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:01:09,974 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:01:09,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09 WrapperNode [2020-10-29 12:01:09,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:01:09,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:01:09,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:01:09,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:01:09,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09" (1/1) ... [2020-10-29 12:01:09,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09" (1/1) ... [2020-10-29 12:01:10,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09" (1/1) ... [2020-10-29 12:01:10,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09" (1/1) ... [2020-10-29 12:01:10,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09" (1/1) ... [2020-10-29 12:01:10,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09" (1/1) ... [2020-10-29 12:01:10,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09" (1/1) ... [2020-10-29 12:01:10,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:01:10,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:01:10,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:01:10,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:01:10,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:01:10,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:01:10,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:01:10,103 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:01:10,103 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-10-29 12:01:10,104 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2020-10-29 12:01:10,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:01:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:01:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:01:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:01:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:01:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:01:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-10-29 12:01:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2020-10-29 12:01:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:01:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:01:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:01:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:01:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:01:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:01:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:01:10,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:01:10,632 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:01:10,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:01:10 BoogieIcfgContainer [2020-10-29 12:01:10,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:01:10,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:01:10,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:01:10,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:01:10,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:01:09" (1/3) ... [2020-10-29 12:01:10,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5fb6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:01:10, skipping insertion in model container [2020-10-29 12:01:10,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:01:09" (2/3) ... [2020-10-29 12:01:10,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5fb6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:01:10, skipping insertion in model container [2020-10-29 12:01:10,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:01:10" (3/3) ... [2020-10-29 12:01:10,646 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd02.c [2020-10-29 12:01:10,660 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:01:10,665 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:01:10,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:01:10,726 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:01:10,726 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:01:10,726 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:01:10,727 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:01:10,727 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:01:10,727 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:01:10,727 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:01:10,727 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:01:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-29 12:01:10,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 12:01:10,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:10,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:01:10,764 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:10,773 INFO L82 PathProgramCache]: Analyzing trace with hash -563936020, now seen corresponding path program 1 times [2020-10-29 12:01:10,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:10,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914219464] [2020-10-29 12:01:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:11,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:11,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:11,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:01:11,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:01:11,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-29 12:01:11,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:11,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:01:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:01:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:01:11,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:11,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:11,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:11,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:11,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:01:11,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:11,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:11,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:11,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:11,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:11,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:01:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:01:11,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914219464] [2020-10-29 12:01:11,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:01:11,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:01:11,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962455222] [2020-10-29 12:01:11,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:01:11,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:11,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:01:11,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:01:11,780 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-10-29 12:01:12,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:12,255 INFO L93 Difference]: Finished difference Result 84 states and 114 transitions. [2020-10-29 12:01:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:01:12,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-29 12:01:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:12,268 INFO L225 Difference]: With dead ends: 84 [2020-10-29 12:01:12,268 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 12:01:12,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:01:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 12:01:12,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-29 12:01:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 12:01:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-29 12:01:12,329 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 14 [2020-10-29 12:01:12,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:12,330 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-29 12:01:12,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:01:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-29 12:01:12,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 12:01:12,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:12,332 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:01:12,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:01:12,332 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:12,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:12,333 INFO L82 PathProgramCache]: Analyzing trace with hash -604465206, now seen corresponding path program 1 times [2020-10-29 12:01:12,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:12,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140413511] [2020-10-29 12:01:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:12,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:12,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 12:01:12,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:01:12,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-29 12:01:12,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:12,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:01:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:01:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:01:12,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:12,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:12,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:12,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:12,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:12,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:01:12,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:12,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 12:01:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:01:12,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140413511] [2020-10-29 12:01:12,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:01:12,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:01:12,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50902440] [2020-10-29 12:01:12,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:01:12,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:12,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:01:12,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:01:12,827 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 9 states. [2020-10-29 12:01:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:13,771 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2020-10-29 12:01:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:01:13,772 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-29 12:01:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:13,775 INFO L225 Difference]: With dead ends: 64 [2020-10-29 12:01:13,776 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 12:01:13,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:01:13,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 12:01:13,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-29 12:01:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 12:01:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2020-10-29 12:01:13,796 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 19 [2020-10-29 12:01:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:13,796 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2020-10-29 12:01:13,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:01:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2020-10-29 12:01:13,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 12:01:13,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:13,798 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:01:13,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:01:13,798 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:13,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:13,799 INFO L82 PathProgramCache]: Analyzing trace with hash -516730711, now seen corresponding path program 1 times [2020-10-29 12:01:13,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:13,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061830618] [2020-10-29 12:01:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:13,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:13,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:14,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:14,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 12:01:14,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:01:14,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-29 12:01:14,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:14,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:01:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:01:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:01:14,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:14,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:14,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:01:14,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:14,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:01:14,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061830618] [2020-10-29 12:01:14,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:01:14,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:01:14,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079136052] [2020-10-29 12:01:14,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:01:14,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:14,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:01:14,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:01:14,450 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand 10 states. [2020-10-29 12:01:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:15,392 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-10-29 12:01:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:01:15,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-29 12:01:15,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:15,395 INFO L225 Difference]: With dead ends: 69 [2020-10-29 12:01:15,395 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 12:01:15,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:01:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 12:01:15,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-10-29 12:01:15,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 12:01:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-29 12:01:15,420 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 19 [2020-10-29 12:01:15,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:15,420 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-29 12:01:15,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:01:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-29 12:01:15,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 12:01:15,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:15,424 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] [2020-10-29 12:01:15,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:01:15,425 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:15,426 INFO L82 PathProgramCache]: Analyzing trace with hash -398892426, now seen corresponding path program 1 times [2020-10-29 12:01:15,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:15,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100169344] [2020-10-29 12:01:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:15,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:15,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:16,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:16,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 12:01:16,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:01:16,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-29 12:01:16,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:16,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:01:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:01:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:16,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:16,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:16,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:01:16,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:16,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:16,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:16,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:16,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:16,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:16,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:01:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:01:16,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:16,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:01:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:01:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:01:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:16,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:16,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:16,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:01:16,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:16,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:01:16,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:16,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:16,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:16,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:16,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:01:16,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:01:16,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100169344] [2020-10-29 12:01:16,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:01:16,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:01:16,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431674185] [2020-10-29 12:01:16,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:01:16,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:16,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:01:16,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:01:16,489 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 6 states. [2020-10-29 12:01:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:16,741 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-29 12:01:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:01:16,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-29 12:01:16,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:16,743 INFO L225 Difference]: With dead ends: 61 [2020-10-29 12:01:16,743 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 12:01:16,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:01:16,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 12:01:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-29 12:01:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 12:01:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-29 12:01:16,756 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 25 [2020-10-29 12:01:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:16,756 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-29 12:01:16,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:01:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-29 12:01:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 12:01:16,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:16,758 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] [2020-10-29 12:01:16,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:01:16,759 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:16,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1624251770, now seen corresponding path program 1 times [2020-10-29 12:01:16,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:16,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402618675] [2020-10-29 12:01:16,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:16,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:16,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:01:16,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:16,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 12:01:16,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:16,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:16,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:01:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:01:16,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:16,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:16,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:16,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:16,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:01:16,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:16,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:16,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:16,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:16,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:16,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:16,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:16,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:16,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:01:16,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:16,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:16,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:16,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:01:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:16,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:16,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:16,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:16,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:16,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:01:16,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:16,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:01:16,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:01:17,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402618675] [2020-10-29 12:01:17,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:01:17,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:01:17,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828077378] [2020-10-29 12:01:17,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:01:17,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:17,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:01:17,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:01:17,018 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 9 states. [2020-10-29 12:01:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:17,544 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-10-29 12:01:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:01:17,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-29 12:01:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:17,547 INFO L225 Difference]: With dead ends: 74 [2020-10-29 12:01:17,547 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 12:01:17,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:01:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 12:01:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2020-10-29 12:01:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 12:01:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-10-29 12:01:17,564 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 26 [2020-10-29 12:01:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:17,565 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-10-29 12:01:17,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:01:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-10-29 12:01:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 12:01:17,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:17,567 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 12:01:17,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:01:17,567 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:17,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1980503842, now seen corresponding path program 1 times [2020-10-29 12:01:17,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:17,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495326629] [2020-10-29 12:01:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:17,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:17,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:17,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:01:17,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 12:01:17,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:17,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 12:01:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:17,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:17,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:17,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:17,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:17,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:17,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:01:17,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:17,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:17,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:17,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:17,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:17,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:01:17,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:17,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:17,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:01:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:17,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:17,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:17,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:01:17,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:01:17,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:17,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:01:17,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:01:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:17,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:17,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:17,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:01:17,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:01:17,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:17,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:01:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:01:17,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 12:01:17,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495326629] [2020-10-29 12:01:17,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:17,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:01:17,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738260038] [2020-10-29 12:01:17,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:01:17,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:17,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:01:17,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:01:17,836 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 7 states. [2020-10-29 12:01:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:18,086 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-10-29 12:01:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:01:18,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-29 12:01:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:18,089 INFO L225 Difference]: With dead ends: 70 [2020-10-29 12:01:18,089 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 12:01:18,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:01:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 12:01:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-29 12:01:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 12:01:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2020-10-29 12:01:18,116 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 32 [2020-10-29 12:01:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:18,116 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2020-10-29 12:01:18,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:01:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2020-10-29 12:01:18,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 12:01:18,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:18,124 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 12:01:18,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:01:18,124 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:18,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:18,125 INFO L82 PathProgramCache]: Analyzing trace with hash 999161632, now seen corresponding path program 1 times [2020-10-29 12:01:18,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:18,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077397590] [2020-10-29 12:01:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:18,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:18,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 12:01:18,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 12:01:18,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:18,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:01:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:01:18,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:18,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:18,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:18,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:18,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:01:18,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:18,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:18,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:18,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:01:18,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:18,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:01:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:18,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:18,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:01:18,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:01:18,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:18,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:01:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:18,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:01:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:18,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:18,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:18,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:18,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:01:18,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:18,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:18,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:18,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:18,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 12:01:18,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077397590] [2020-10-29 12:01:18,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:18,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:01:18,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074613351] [2020-10-29 12:01:18,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:01:18,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:18,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:01:18,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:01:18,580 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand 11 states. [2020-10-29 12:01:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:19,164 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2020-10-29 12:01:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:01:19,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-29 12:01:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:19,166 INFO L225 Difference]: With dead ends: 69 [2020-10-29 12:01:19,166 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 12:01:19,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:01:19,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 12:01:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-29 12:01:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 12:01:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-29 12:01:19,186 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 33 [2020-10-29 12:01:19,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:19,186 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-29 12:01:19,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:01:19,187 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-29 12:01:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:01:19,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:19,188 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 12:01:19,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:01:19,189 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:19,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:19,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1831946258, now seen corresponding path program 1 times [2020-10-29 12:01:19,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:19,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285851597] [2020-10-29 12:01:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:19,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:19,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:20,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:20,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:01:20,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:01:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1244 [2020-10-29 12:01:20,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:20,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:01:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:01:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:01:20,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:20,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:20,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:20,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:01:20,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:20,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:20,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:20,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:20,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:20,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:20,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:01:20,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 12:01:20,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:20,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:01:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:20,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:20,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:20,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:20,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:20,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:01:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:20,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 12:01:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:20,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:20,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:20,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:01:20,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:20,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:01:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 12:01:20,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285851597] [2020-10-29 12:01:20,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:20,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:01:20,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822694744] [2020-10-29 12:01:20,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:01:20,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:20,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:01:20,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:01:20,786 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 14 states. [2020-10-29 12:01:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:21,714 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2020-10-29 12:01:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:01:21,715 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-29 12:01:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:21,717 INFO L225 Difference]: With dead ends: 85 [2020-10-29 12:01:21,717 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 12:01:21,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:01:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 12:01:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2020-10-29 12:01:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 12:01:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2020-10-29 12:01:21,739 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 34 [2020-10-29 12:01:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:21,739 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2020-10-29 12:01:21,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:01:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2020-10-29 12:01:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:01:21,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:21,742 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 12:01:21,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:01:21,743 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:21,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:21,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1148189006, now seen corresponding path program 1 times [2020-10-29 12:01:21,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:21,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906996229] [2020-10-29 12:01:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:21,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:21,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:01:21,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 12:01:21,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:21,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:01:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:01:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:21,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:21,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:21,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:21,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:21,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:01:21,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:21,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:21,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:21,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:21,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:21,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:22,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:22,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:22,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:01:22,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:22,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:01:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:22,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:22,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:22,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:01:22,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:22,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:22,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:22,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 12:01:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:22,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:22,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:22,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:22,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:01:22,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:22,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:22,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:22,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:22,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:01:22,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 12:01:22,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906996229] [2020-10-29 12:01:22,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:22,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:01:22,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014525401] [2020-10-29 12:01:22,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:01:22,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:22,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:01:22,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:01:22,186 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 11 states. [2020-10-29 12:01:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:22,801 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2020-10-29 12:01:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:01:22,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 12:01:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:22,804 INFO L225 Difference]: With dead ends: 84 [2020-10-29 12:01:22,804 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 12:01:22,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:01:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 12:01:22,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-10-29 12:01:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 12:01:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2020-10-29 12:01:22,834 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 34 [2020-10-29 12:01:22,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:22,834 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2020-10-29 12:01:22,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:01:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2020-10-29 12:01:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 12:01:22,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:22,837 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 12:01:22,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:01:22,838 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:22,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:22,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2142927852, now seen corresponding path program 1 times [2020-10-29 12:01:22,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:22,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892927803] [2020-10-29 12:01:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:23,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:23,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:01:23,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:23,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 12:01:23,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:23,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:01:23,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:23,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:01:23,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:23,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:23,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:23,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:01:23,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:23,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:23,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:23,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:23,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:23,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:23,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:01:23,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:23,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:01:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:23,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:23,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:23,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:23,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:01:23,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:23,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:23,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:23,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:23,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:23,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 12:01:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:23,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:23,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:01:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:01:23,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:23,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:01:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:23,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:01:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:23,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:23,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:01:23,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:23,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 12:01:23,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892927803] [2020-10-29 12:01:23,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:23,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:01:23,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709873666] [2020-10-29 12:01:23,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:01:23,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:23,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:01:23,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:01:23,415 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand 13 states. [2020-10-29 12:01:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:24,248 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2020-10-29 12:01:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:01:24,249 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-29 12:01:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:24,250 INFO L225 Difference]: With dead ends: 90 [2020-10-29 12:01:24,251 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 12:01:24,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:01:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 12:01:24,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2020-10-29 12:01:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 12:01:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-29 12:01:24,283 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 41 [2020-10-29 12:01:24,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:24,284 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-29 12:01:24,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:01:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-29 12:01:24,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 12:01:24,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:24,289 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 12:01:24,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:01:24,289 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:24,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:24,290 INFO L82 PathProgramCache]: Analyzing trace with hash -131001996, now seen corresponding path program 1 times [2020-10-29 12:01:24,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:24,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400206084] [2020-10-29 12:01:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:24,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:24,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:01:24,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 12:01:24,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:24,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:01:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:01:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:24,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:24,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:24,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:01:24,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:24,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:24,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:24,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:24,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:24,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:24,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:01:24,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:24,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:01:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:24,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:24,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:24,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:24,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:01:24,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:24,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 12:01:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:24,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:24,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:01:24,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:01:24,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:24,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:01:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:01:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:24,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:24,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:01:24,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:24,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 12:01:24,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400206084] [2020-10-29 12:01:24,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:24,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:01:24,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911799083] [2020-10-29 12:01:24,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:01:24,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:24,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:01:24,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:01:24,956 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 12 states. [2020-10-29 12:01:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:25,809 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-10-29 12:01:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:01:25,809 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-29 12:01:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:25,811 INFO L225 Difference]: With dead ends: 82 [2020-10-29 12:01:25,811 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 12:01:25,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:01:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 12:01:25,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-10-29 12:01:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 12:01:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2020-10-29 12:01:25,822 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 41 [2020-10-29 12:01:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:25,823 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2020-10-29 12:01:25,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:01:25,823 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2020-10-29 12:01:25,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 12:01:25,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:25,824 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 12:01:25,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:01:25,824 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:25,825 INFO L82 PathProgramCache]: Analyzing trace with hash 646374662, now seen corresponding path program 2 times [2020-10-29 12:01:25,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:25,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159988107] [2020-10-29 12:01:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:25,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:25,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:26,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:26,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:26,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:26,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:26,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:27,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:27,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:01:27,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:01:27,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-10-29 12:01:27,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:27,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:01:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:01:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:27,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:27,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:27,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:27,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:01:27,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:27,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:27,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:27,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:27,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:27,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:27,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:01:27,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:01:27,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-29 12:01:27,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:27,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:01:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:01:27,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:27,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:27,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:27,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 12:01:27,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:27,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:01:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:27,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:27,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:27,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:27,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:27,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:27,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:01:27,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:27,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:27,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:28,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:01:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:28,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:28,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:28,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:01:28,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:28,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:01:28,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 12:01:28,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159988107] [2020-10-29 12:01:28,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:28,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:01:28,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567229443] [2020-10-29 12:01:28,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:01:28,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:28,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:01:28,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:01:28,073 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand 15 states. [2020-10-29 12:01:29,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:29,296 INFO L93 Difference]: Finished difference Result 96 states and 123 transitions. [2020-10-29 12:01:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:01:29,297 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-29 12:01:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:29,299 INFO L225 Difference]: With dead ends: 96 [2020-10-29 12:01:29,300 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 12:01:29,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:01:29,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 12:01:29,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 77. [2020-10-29 12:01:29,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 12:01:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2020-10-29 12:01:29,313 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 42 [2020-10-29 12:01:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:29,313 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2020-10-29 12:01:29,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:01:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2020-10-29 12:01:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 12:01:29,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:29,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 12:01:29,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:01:29,315 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:29,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:29,315 INFO L82 PathProgramCache]: Analyzing trace with hash 705700454, now seen corresponding path program 1 times [2020-10-29 12:01:29,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:29,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697135809] [2020-10-29 12:01:29,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:29,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:29,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:29,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:31,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:01:31,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:01:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1853 [2020-10-29 12:01:31,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:31,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:01:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:01:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:31,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:31,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:31,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:31,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:31,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:01:31,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:31,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:31,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:31,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:31,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:31,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:31,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:31,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:31,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:31,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:31,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:31,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:31,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:01:31,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:01:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-29 12:01:31,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:31,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:01:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:01:31,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:32,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:32,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:32,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:32,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:32,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:01:32,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 12:01:32,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:32,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:32,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:01:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:32,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:32,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:32,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:32,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:32,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:01:32,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:32,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:01:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:32,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:01:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:32,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:32,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:32,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:32,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:01:32,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:32,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:32,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:32,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:32,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:01:32,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 12:01:32,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697135809] [2020-10-29 12:01:32,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:32,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:01:32,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199474703] [2020-10-29 12:01:32,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:01:32,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:32,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:01:32,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:01:32,415 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand 16 states. [2020-10-29 12:01:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:33,730 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2020-10-29 12:01:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:01:33,733 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-29 12:01:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:33,735 INFO L225 Difference]: With dead ends: 101 [2020-10-29 12:01:33,735 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 12:01:33,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:01:33,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 12:01:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 80. [2020-10-29 12:01:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 12:01:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2020-10-29 12:01:33,748 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 42 [2020-10-29 12:01:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:33,748 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2020-10-29 12:01:33,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:01:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2020-10-29 12:01:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 12:01:33,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:33,753 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 12:01:33,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:01:33,754 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:33,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:33,754 INFO L82 PathProgramCache]: Analyzing trace with hash -580332890, now seen corresponding path program 2 times [2020-10-29 12:01:33,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:33,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535887961] [2020-10-29 12:01:33,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:33,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:33,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:33,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:35,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:01:35,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:01:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-10-29 12:01:35,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:35,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:01:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:01:35,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:35,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:35,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:35,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:35,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:01:35,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:35,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:35,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:35,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:35,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:35,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:35,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:35,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:35,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:01:35,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:01:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 12:01:35,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:35,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:01:35,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:35,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:01:35,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:35,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:35,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:35,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:01:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 12:01:35,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:35,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:01:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:35,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:35,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:35,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:35,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:01:35,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:35,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:01:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:01:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:35,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:35,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:35,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:35,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:01:35,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:35,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:01:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 12:01:36,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535887961] [2020-10-29 12:01:36,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:36,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:01:36,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806640302] [2020-10-29 12:01:36,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:01:36,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:36,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:01:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:01:36,020 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand 15 states. [2020-10-29 12:01:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:36,939 INFO L93 Difference]: Finished difference Result 109 states and 140 transitions. [2020-10-29 12:01:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:01:36,939 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-29 12:01:36,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:36,942 INFO L225 Difference]: With dead ends: 109 [2020-10-29 12:01:36,942 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 12:01:36,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:01:36,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 12:01:36,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2020-10-29 12:01:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 12:01:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2020-10-29 12:01:36,962 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 42 [2020-10-29 12:01:36,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:36,962 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2020-10-29 12:01:36,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:01:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2020-10-29 12:01:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 12:01:36,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:36,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 12:01:36,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:01:36,964 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:36,964 INFO L82 PathProgramCache]: Analyzing trace with hash -951636832, now seen corresponding path program 2 times [2020-10-29 12:01:36,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:36,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600227306] [2020-10-29 12:01:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:37,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:37,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:37,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:37,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:38,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:38,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 12:01:38,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:01:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-10-29 12:01:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:38,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:01:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:01:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:38,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:38,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:38,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:38,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:01:38,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:38,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:38,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:38,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:39,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:39,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:01:39,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:01:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-29 12:01:39,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:39,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:01:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:01:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:39,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:39,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:39,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:01:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 12:01:39,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:39,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:01:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:39,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:39,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:39,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:39,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:39,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:01:39,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:39,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:01:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:39,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:01:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:39,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:39,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:01:39,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:01:39,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:39,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:01:39,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:01:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:39,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:39,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:39,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:01:39,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:39,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 12:01:39,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600227306] [2020-10-29 12:01:39,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:39,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:01:39,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626523521] [2020-10-29 12:01:39,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:01:39,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:39,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:01:39,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:01:39,556 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 18 states. [2020-10-29 12:01:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:40,917 INFO L93 Difference]: Finished difference Result 113 states and 147 transitions. [2020-10-29 12:01:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:01:40,918 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-29 12:01:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:40,920 INFO L225 Difference]: With dead ends: 113 [2020-10-29 12:01:40,920 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 12:01:40,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:01:40,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 12:01:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 87. [2020-10-29 12:01:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 12:01:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2020-10-29 12:01:40,935 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 49 [2020-10-29 12:01:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:40,935 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2020-10-29 12:01:40,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:01:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2020-10-29 12:01:40,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 12:01:40,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:40,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 12:01:40,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:01:40,937 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:40,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:40,938 INFO L82 PathProgramCache]: Analyzing trace with hash 62923584, now seen corresponding path program 1 times [2020-10-29 12:01:40,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:40,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527253675] [2020-10-29 12:01:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:40,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:41,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:41,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:41,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:42,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:42,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 12:01:42,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:01:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-29 12:01:42,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:42,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:01:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:01:42,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:42,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:42,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:42,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:01:42,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:42,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:42,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:42,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:42,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:42,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:01:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 12:01:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:42,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:01:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:01:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:42,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:42,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:42,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:42,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:01:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:42,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:01:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:42,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:42,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:42,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:42,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:01:42,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:42,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:01:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:42,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:01:42,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:01:42,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:42,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:01:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:01:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:42,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:01:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:42,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:42,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:42,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:42,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:01:42,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:42,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:42,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 12:01:43,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527253675] [2020-10-29 12:01:43,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:43,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:01:43,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135233815] [2020-10-29 12:01:43,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:01:43,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:43,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:01:43,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:01:43,053 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand 18 states. [2020-10-29 12:01:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:44,403 INFO L93 Difference]: Finished difference Result 116 states and 151 transitions. [2020-10-29 12:01:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:01:44,405 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-29 12:01:44,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:44,407 INFO L225 Difference]: With dead ends: 116 [2020-10-29 12:01:44,407 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 12:01:44,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:01:44,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 12:01:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 92. [2020-10-29 12:01:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 12:01:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2020-10-29 12:01:44,423 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 49 [2020-10-29 12:01:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:44,423 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2020-10-29 12:01:44,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:01:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2020-10-29 12:01:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 12:01:44,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:44,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 12:01:44,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:01:44,425 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:44,426 INFO L82 PathProgramCache]: Analyzing trace with hash 308439492, now seen corresponding path program 3 times [2020-10-29 12:01:44,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:44,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000890176] [2020-10-29 12:01:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:44,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:44,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:01:44,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 12:01:44,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:44,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:01:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 12:01:44,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:44,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:44,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:44,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:44,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:01:44,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:44,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:44,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:01:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:44,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:44,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:44,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:44,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:01:44,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:44,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:01:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:44,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:44,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:44,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:44,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:44,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:44,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:01:44,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:44,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:44,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:44,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 12:01:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:44,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:44,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:44,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:01:44,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:44,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:01:44,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:44,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:01:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:01:44,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:01:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:45,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:45,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:01:45,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:45,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:01:45,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:45,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:01:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:01:45,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:01:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:45,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:45,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:45,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:45,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:01:45,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:45,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:01:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 12:01:45,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000890176] [2020-10-29 12:01:45,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:45,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:01:45,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687696335] [2020-10-29 12:01:45,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:01:45,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:45,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:01:45,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:01:45,199 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand 16 states. [2020-10-29 12:01:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:46,099 INFO L93 Difference]: Finished difference Result 110 states and 143 transitions. [2020-10-29 12:01:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:01:46,100 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-29 12:01:46,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:46,102 INFO L225 Difference]: With dead ends: 110 [2020-10-29 12:01:46,102 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 12:01:46,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:01:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 12:01:46,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2020-10-29 12:01:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 12:01:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2020-10-29 12:01:46,116 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 48 [2020-10-29 12:01:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:46,116 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2020-10-29 12:01:46,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:01:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2020-10-29 12:01:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 12:01:46,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:46,117 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-29 12:01:46,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:01:46,118 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:46,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:46,118 INFO L82 PathProgramCache]: Analyzing trace with hash -346188590, now seen corresponding path program 3 times [2020-10-29 12:01:46,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:46,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703515391] [2020-10-29 12:01:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:46,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:46,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:46,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:46,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:49,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:01:49,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:01:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2953 [2020-10-29 12:01:49,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:49,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:01:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:01:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:49,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:49,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:49,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:01:49,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:49,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:49,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:49,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:49,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:49,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:01:49,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:49,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:51,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:51,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:01:51,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:01:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2807 [2020-10-29 12:01:51,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:51,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:01:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:01:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:52,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:52,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:53,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:01:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:01:53,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-29 12:01:53,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:53,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:01:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:01:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 12:01:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:53,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:53,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:53,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:53,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:01:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 12:01:53,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:53,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:01:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:53,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:53,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:53,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:53,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:01:53,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:53,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:53,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:01:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:53,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:53,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:53,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:01:53,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:53,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:01:53,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 12:01:53,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703515391] [2020-10-29 12:01:53,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:53,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:01:53,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288836051] [2020-10-29 12:01:53,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:01:53,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:53,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:01:53,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:01:53,452 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand 17 states. [2020-10-29 12:01:54,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:54,618 INFO L93 Difference]: Finished difference Result 125 states and 162 transitions. [2020-10-29 12:01:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:01:54,618 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-29 12:01:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:54,620 INFO L225 Difference]: With dead ends: 125 [2020-10-29 12:01:54,620 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 12:01:54,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:01:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 12:01:54,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 98. [2020-10-29 12:01:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 12:01:54,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2020-10-29 12:01:54,646 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 50 [2020-10-29 12:01:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:54,646 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2020-10-29 12:01:54,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:01:54,647 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2020-10-29 12:01:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 12:01:54,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:54,648 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-29 12:01:54,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:01:54,648 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:54,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:54,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1855420466, now seen corresponding path program 4 times [2020-10-29 12:01:54,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:54,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549994406] [2020-10-29 12:01:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:54,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:54,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:54,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:54,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:55,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:56,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:56,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:01:56,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:01:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2185 [2020-10-29 12:01:56,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:56,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:01:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:01:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:56,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:56,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:56,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:56,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:56,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:01:56,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:56,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:56,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:56,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:57,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:57,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:57,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:01:57,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:01:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-29 12:01:57,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:57,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:01:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:01:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:57,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:57,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:57,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:57,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:01:57,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:57,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 12:01:57,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:57,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:01:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:01:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:57,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:57,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:57,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:57,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:57,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 12:01:57,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:57,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:01:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:57,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:57,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:57,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:57,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:57,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:01:57,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:57,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:01:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:01:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:57,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:01:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:57,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:57,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:57,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:01:57,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:01:57,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:57,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:01:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:01:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:01:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 12:01:57,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549994406] [2020-10-29 12:01:57,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:01:57,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:01:57,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401400825] [2020-10-29 12:01:57,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:01:57,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:01:57,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:01:57,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:01:57,868 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand 17 states. [2020-10-29 12:01:59,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:01:59,484 INFO L93 Difference]: Finished difference Result 143 states and 194 transitions. [2020-10-29 12:01:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:01:59,484 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-29 12:01:59,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:01:59,486 INFO L225 Difference]: With dead ends: 143 [2020-10-29 12:01:59,486 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 12:01:59,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:01:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 12:01:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 101. [2020-10-29 12:01:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 12:01:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2020-10-29 12:01:59,501 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 50 [2020-10-29 12:01:59,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:01:59,501 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2020-10-29 12:01:59,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:01:59,502 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2020-10-29 12:01:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 12:01:59,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:01:59,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 12:01:59,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:01:59,503 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:01:59,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:01:59,504 INFO L82 PathProgramCache]: Analyzing trace with hash 613198592, now seen corresponding path program 2 times [2020-10-29 12:01:59,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:01:59,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185483545] [2020-10-29 12:01:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:01:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:59,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:59,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 12:01:59,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:59,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 12:01:59,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:59,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:01:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:01:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:01:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:59,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:01:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:59,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:59,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:01:59,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:01:59,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:59,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:01:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:01:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:59,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:01:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:59,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:59,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:59,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:01:59,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:01:59,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:59,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:01:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:01:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:01:59,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:01:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:01:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:01:59,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:01:59,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:01:59,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:01:59,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:01:59,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:01:59,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:01:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:01:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:01:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:01:59,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:00,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:00,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:00,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:00,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:02:00,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:00,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:02:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:02:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:00,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:00,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:02:00,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:02:00,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:00,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:02:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:02:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:00,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:00,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:00,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:02:00,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:00,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:02:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 12:02:00,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185483545] [2020-10-29 12:02:00,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:00,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:02:00,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498603970] [2020-10-29 12:02:00,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:02:00,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:00,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:02:00,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:02:00,197 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand 15 states. [2020-10-29 12:02:01,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:02:01,216 INFO L93 Difference]: Finished difference Result 124 states and 163 transitions. [2020-10-29 12:02:01,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:02:01,217 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-10-29 12:02:01,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:02:01,218 INFO L225 Difference]: With dead ends: 124 [2020-10-29 12:02:01,218 INFO L226 Difference]: Without dead ends: 119 [2020-10-29 12:02:01,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:02:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-29 12:02:01,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 106. [2020-10-29 12:02:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 12:02:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2020-10-29 12:02:01,232 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 140 transitions. Word has length 49 [2020-10-29 12:02:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:02:01,233 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 140 transitions. [2020-10-29 12:02:01,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:02:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 140 transitions. [2020-10-29 12:02:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 12:02:01,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:02:01,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-29 12:02:01,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:02:01,235 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:02:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:02:01,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2049530356, now seen corresponding path program 3 times [2020-10-29 12:02:01,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:02:01,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365233480] [2020-10-29 12:02:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:02:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:01,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:03,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 12:02:03,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:02:03,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2105 [2020-10-29 12:02:03,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:03,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:02:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:02:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:02:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:02:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:03,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:02:03,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:03,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:02:03,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:03,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:02:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:02:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:03,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:02:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:04,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:02:04,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:02:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-10-29 12:02:04,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:04,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:02:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:02:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:04,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:02:04,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:02:04,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 12:02:04,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:04,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:02:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:02:04,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:04,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:02:04,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:02:04,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:04,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:02:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:02:04,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:04,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:04,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:04,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:02:04,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:04,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:04,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:02:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:04,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:02:04,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:02:04,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:04,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:02:04,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:02:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:04,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:04,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:02:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:04,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:02:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 12:02:04,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365233480] [2020-10-29 12:02:04,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:04,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:02:04,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348347541] [2020-10-29 12:02:04,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:02:04,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:04,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:02:04,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:02:04,960 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand 17 states. [2020-10-29 12:02:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:02:06,331 INFO L93 Difference]: Finished difference Result 157 states and 215 transitions. [2020-10-29 12:02:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:02:06,332 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-10-29 12:02:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:02:06,334 INFO L225 Difference]: With dead ends: 157 [2020-10-29 12:02:06,334 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 12:02:06,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:02:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 12:02:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 109. [2020-10-29 12:02:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 12:02:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2020-10-29 12:02:06,350 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 57 [2020-10-29 12:02:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:02:06,350 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2020-10-29 12:02:06,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:02:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2020-10-29 12:02:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 12:02:06,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:02:06,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-29 12:02:06,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:02:06,352 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:02:06,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:02:06,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1160945836, now seen corresponding path program 4 times [2020-10-29 12:02:06,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:02:06,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972366126] [2020-10-29 12:02:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:02:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:06,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 12:02:07,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:02:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-29 12:02:07,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:07,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:02:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:02:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:02:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:02:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:07,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:07,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:02:07,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:02:07,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:07,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:02:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:02:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:07,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:02:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:08,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:08,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:02:08,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:02:08,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-29 12:02:08,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:08,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:08,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:02:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:02:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:08,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:08,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:08,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:08,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:02:08,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:02:08,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-29 12:02:08,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:08,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:02:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:02:08,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:09,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:09,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:09,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:09,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:02:09,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:02:09,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 12:02:09,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:09,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:02:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:02:09,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:09,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:09,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:09,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:09,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:09,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:09,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:02:09,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:09,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:02:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:09,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:02:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:09,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:09,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:09,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:02:09,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:02:09,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:09,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:02:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:02:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:09,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:09,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:09,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:02:09,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:09,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:02:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 12:02:09,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972366126] [2020-10-29 12:02:09,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:09,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:02:09,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068386080] [2020-10-29 12:02:09,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:02:09,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:09,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:02:09,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:02:09,314 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand 18 states. [2020-10-29 12:02:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:02:10,686 INFO L93 Difference]: Finished difference Result 132 states and 172 transitions. [2020-10-29 12:02:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:02:10,688 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-29 12:02:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:02:10,689 INFO L225 Difference]: With dead ends: 132 [2020-10-29 12:02:10,689 INFO L226 Difference]: Without dead ends: 127 [2020-10-29 12:02:10,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:02:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-29 12:02:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2020-10-29 12:02:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 12:02:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2020-10-29 12:02:10,702 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 57 [2020-10-29 12:02:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:02:10,703 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2020-10-29 12:02:10,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:02:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2020-10-29 12:02:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 12:02:10,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:02:10,704 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-29 12:02:10,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:02:10,705 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:02:10,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:02:10,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1957621748, now seen corresponding path program 5 times [2020-10-29 12:02:10,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:02:10,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768424005] [2020-10-29 12:02:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:02:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:10,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:10,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:11,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:11,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:12,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 12:02:12,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:02:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-10-29 12:02:12,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:12,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:02:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:02:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:02:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:12,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:02:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:12,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:02:12,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:02:12,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:12,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:02:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:02:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:02:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:12,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:13,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:02:13,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:02:13,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-10-29 12:02:13,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:13,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:02:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:02:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:13,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:02:13,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:02:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 12:02:13,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:13,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:02:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:02:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:13,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:13,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:02:13,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:02:13,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:02:13,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:13,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:02:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:02:13,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:13,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:13,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:13,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:02:13,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:13,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:13,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:02:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:13,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:13,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:02:13,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:13,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:02:13,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:13,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:02:13,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:14,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:02:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:14,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:14,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:14,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:02:14,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:14,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:02:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 12:02:14,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768424005] [2020-10-29 12:02:14,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:14,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:02:14,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757159878] [2020-10-29 12:02:14,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:02:14,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:14,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:02:14,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:02:14,085 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand 20 states. [2020-10-29 12:02:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:02:15,654 INFO L93 Difference]: Finished difference Result 141 states and 189 transitions. [2020-10-29 12:02:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:02:15,655 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-29 12:02:15,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:02:15,657 INFO L225 Difference]: With dead ends: 141 [2020-10-29 12:02:15,657 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 12:02:15,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 12:02:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 12:02:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-29 12:02:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 12:02:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 157 transitions. [2020-10-29 12:02:15,674 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 157 transitions. Word has length 57 [2020-10-29 12:02:15,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:02:15,674 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 157 transitions. [2020-10-29 12:02:15,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:02:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 157 transitions. [2020-10-29 12:02:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 12:02:15,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:02:15,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-29 12:02:15,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:02:15,676 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:02:15,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:02:15,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1310216244, now seen corresponding path program 6 times [2020-10-29 12:02:15,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:02:15,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950581092] [2020-10-29 12:02:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:02:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:15,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:15,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:18,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:18,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 12:02:18,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:02:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2853 [2020-10-29 12:02:18,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:18,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:02:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:02:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:02:18,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:02:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:18,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:18,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:02:18,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:02:18,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:18,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:02:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:02:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:02:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:18,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:18,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:18,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:18,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:19,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:19,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:02:19,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:02:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1358 [2020-10-29 12:02:19,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:19,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:02:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:02:19,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:20,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:20,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:02:20,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:02:20,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 12:02:20,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:20,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:02:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:02:20,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:20,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:20,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:02:20,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:02:20,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 12:02:20,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:20,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:02:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:02:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:20,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:20,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:02:20,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:20,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:20,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:20,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:02:20,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:02:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:20,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:20,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:02:20,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:02:20,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:20,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:02:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:02:20,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:02:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:20,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:20,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:20,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:02:20,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:20,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:02:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 12:02:20,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950581092] [2020-10-29 12:02:20,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:20,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:02:20,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030659872] [2020-10-29 12:02:20,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:02:20,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:20,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:02:20,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:02:20,659 INFO L87 Difference]: Start difference. First operand 117 states and 157 transitions. Second operand 19 states. [2020-10-29 12:02:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:02:22,220 INFO L93 Difference]: Finished difference Result 159 states and 214 transitions. [2020-10-29 12:02:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:02:22,221 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-10-29 12:02:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:02:22,223 INFO L225 Difference]: With dead ends: 159 [2020-10-29 12:02:22,223 INFO L226 Difference]: Without dead ends: 154 [2020-10-29 12:02:22,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:02:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-29 12:02:22,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 123. [2020-10-29 12:02:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 12:02:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 167 transitions. [2020-10-29 12:02:22,245 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 167 transitions. Word has length 57 [2020-10-29 12:02:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:02:22,245 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 167 transitions. [2020-10-29 12:02:22,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:02:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 167 transitions. [2020-10-29 12:02:22,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:02:22,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:02:22,247 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:02:22,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:02:22,247 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:02:22,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:02:22,248 INFO L82 PathProgramCache]: Analyzing trace with hash 901922022, now seen corresponding path program 5 times [2020-10-29 12:02:22,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:02:22,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990568256] [2020-10-29 12:02:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:02:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:22,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:24,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:02:24,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:02:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-10-29 12:02:24,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:24,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:02:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:02:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:02:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:02:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:24,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:02:24,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:02:24,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:24,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:02:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:02:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:24,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:02:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:25,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:27,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:27,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:02:27,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:02:27,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3384 [2020-10-29 12:02:27,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:27,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:02:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:02:27,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:27,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:27,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:27,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:27,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:28,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:02:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:02:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-29 12:02:28,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:28,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:02:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:02:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:28,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:28,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:28,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:02:28,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:02:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-29 12:02:28,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:28,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:02:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:02:28,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:28,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:28,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:02:28,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:02:28,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:28,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:02:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:02:28,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:29,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:29,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:29,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:29,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:29,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:02:29,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:29,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:02:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:29,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:29,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:29,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:02:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:29,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:02:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:02:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 12:02:29,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990568256] [2020-10-29 12:02:29,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:29,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:02:29,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148196648] [2020-10-29 12:02:29,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:02:29,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:29,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:02:29,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:02:29,157 INFO L87 Difference]: Start difference. First operand 123 states and 167 transitions. Second operand 20 states. [2020-10-29 12:02:31,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:02:31,026 INFO L93 Difference]: Finished difference Result 181 states and 246 transitions. [2020-10-29 12:02:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:02:31,026 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2020-10-29 12:02:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:02:31,028 INFO L225 Difference]: With dead ends: 181 [2020-10-29 12:02:31,028 INFO L226 Difference]: Without dead ends: 176 [2020-10-29 12:02:31,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 12:02:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-29 12:02:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 135. [2020-10-29 12:02:31,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 12:02:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 187 transitions. [2020-10-29 12:02:31,046 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 187 transitions. Word has length 58 [2020-10-29 12:02:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:02:31,047 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 187 transitions. [2020-10-29 12:02:31,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:02:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 187 transitions. [2020-10-29 12:02:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:02:31,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:02:31,048 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-29 12:02:31,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:02:31,049 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:02:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:02:31,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1212111942, now seen corresponding path program 6 times [2020-10-29 12:02:31,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:02:31,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418434301] [2020-10-29 12:02:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:02:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:31,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:33,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:02:33,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:02:33,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-29 12:02:33,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:33,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:02:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:02:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:02:33,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:33,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:02:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:33,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:02:33,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:02:33,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:33,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:02:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:02:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:02:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:34,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:34,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:02:34,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:02:34,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-29 12:02:34,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:34,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:02:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:02:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:34,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:34,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:34,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:34,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:34,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:02:34,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:02:34,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-29 12:02:34,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:34,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:02:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:02:34,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:34,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:34,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:35,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:35,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:02:35,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:02:35,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:35,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:02:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:02:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:35,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:35,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:35,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:02:35,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:35,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:02:35,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:35,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:35,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:02:35,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:02:35,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:35,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:35,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:35,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:35,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:02:35,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:35,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:35,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:02:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:35,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:35,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:35,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:02:35,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:35,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:02:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:02:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 12:02:35,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418434301] [2020-10-29 12:02:35,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:35,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:02:35,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891554391] [2020-10-29 12:02:35,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:02:35,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:35,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:02:35,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:02:35,362 INFO L87 Difference]: Start difference. First operand 135 states and 187 transitions. Second operand 21 states. [2020-10-29 12:02:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:02:37,241 INFO L93 Difference]: Finished difference Result 177 states and 245 transitions. [2020-10-29 12:02:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:02:37,241 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-29 12:02:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:02:37,244 INFO L225 Difference]: With dead ends: 177 [2020-10-29 12:02:37,244 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 12:02:37,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=183, Invalid=1149, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 12:02:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 12:02:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-29 12:02:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-29 12:02:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 198 transitions. [2020-10-29 12:02:37,262 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 198 transitions. Word has length 58 [2020-10-29 12:02:37,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:02:37,262 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 198 transitions. [2020-10-29 12:02:37,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:02:37,262 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 198 transitions. [2020-10-29 12:02:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:02:37,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:02:37,264 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-29 12:02:37,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:02:37,264 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:02:37,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:02:37,265 INFO L82 PathProgramCache]: Analyzing trace with hash -456292218, now seen corresponding path program 7 times [2020-10-29 12:02:37,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:02:37,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080410834] [2020-10-29 12:02:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:02:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:39,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:39,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:02:39,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:02:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2349 [2020-10-29 12:02:39,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:39,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:02:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:02:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:02:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:02:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:39,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:39,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:39,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:02:39,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:02:39,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:39,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:02:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:02:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:02:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:39,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:39,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:40,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:40,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:41,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:43,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:43,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:02:43,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 12:02:43,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3755 [2020-10-29 12:02:43,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:43,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:02:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:02:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:43,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:43,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:43,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:44,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:44,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:02:44,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:02:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-10-29 12:02:44,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:44,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:02:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:02:44,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:44,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:44,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:02:44,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 12:02:44,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:44,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:02:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:02:44,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:44,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:44,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:44,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:02:44,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:44,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 12:02:44,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:44,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:02:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:02:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:44,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:44,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:44,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:44,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:02:44,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:44,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:02:44,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:02:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:44,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:44,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:44,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:44,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:02:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:44,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:02:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:02:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:02:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 12:02:44,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080410834] [2020-10-29 12:02:44,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:44,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:02:44,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680344415] [2020-10-29 12:02:44,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:02:44,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:44,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:02:44,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:02:44,875 INFO L87 Difference]: Start difference. First operand 142 states and 198 transitions. Second operand 19 states. [2020-10-29 12:02:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:02:46,613 INFO L93 Difference]: Finished difference Result 198 states and 280 transitions. [2020-10-29 12:02:46,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:02:46,613 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-29 12:02:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:02:46,616 INFO L225 Difference]: With dead ends: 198 [2020-10-29 12:02:46,616 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 12:02:46,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 12:02:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 12:02:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 146. [2020-10-29 12:02:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 12:02:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 204 transitions. [2020-10-29 12:02:46,636 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 204 transitions. Word has length 58 [2020-10-29 12:02:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:02:46,636 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 204 transitions. [2020-10-29 12:02:46,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:02:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 204 transitions. [2020-10-29 12:02:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:02:46,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:02:46,638 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-29 12:02:46,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:02:46,638 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:02:46,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:02:46,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1264356730, now seen corresponding path program 8 times [2020-10-29 12:02:46,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:02:46,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935040646] [2020-10-29 12:02:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:02:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:46,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:46,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:46,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:46,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:46,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:46,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:48,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:02:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:02:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1895 [2020-10-29 12:02:48,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:48,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:02:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:02:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:02:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:48,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:02:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:48,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:02:48,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:48,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:02:48,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:48,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:02:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:02:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:48,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:02:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:48,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:49,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:49,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:02:49,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:02:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-29 12:02:49,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:49,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:02:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:02:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:49,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:49,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:49,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:49,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:02:49,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 12:02:49,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:49,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:02:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:02:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:49,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:49,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:49,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:02:49,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 12:02:49,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:49,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:02:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:02:49,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:49,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:49,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:02:49,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:02:49,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:49,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:02:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:02:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:50,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:50,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:50,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:50,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:02:50,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:50,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:02:50,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:02:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:50,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:50,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:50,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:02:50,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:50,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:02:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:50,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:02:50,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:02:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 12:02:50,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935040646] [2020-10-29 12:02:50,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:50,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:02:50,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723866676] [2020-10-29 12:02:50,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:02:50,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:50,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:02:50,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:02:50,331 INFO L87 Difference]: Start difference. First operand 146 states and 204 transitions. Second operand 22 states. [2020-10-29 12:02:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:02:52,228 INFO L93 Difference]: Finished difference Result 210 states and 298 transitions. [2020-10-29 12:02:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:02:52,229 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-10-29 12:02:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:02:52,231 INFO L225 Difference]: With dead ends: 210 [2020-10-29 12:02:52,231 INFO L226 Difference]: Without dead ends: 205 [2020-10-29 12:02:52,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 12:02:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-29 12:02:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 155. [2020-10-29 12:02:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 12:02:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 218 transitions. [2020-10-29 12:02:52,253 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 218 transitions. Word has length 58 [2020-10-29 12:02:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:02:52,253 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 218 transitions. [2020-10-29 12:02:52,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:02:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 218 transitions. [2020-10-29 12:02:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:02:52,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:02:52,255 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 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] [2020-10-29 12:02:52,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:02:52,256 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:02:52,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:02:52,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1893983616, now seen corresponding path program 7 times [2020-10-29 12:02:52,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:02:52,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178345055] [2020-10-29 12:02:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:02:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:52,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:57,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:02:57,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:02:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 12:02:57,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:57,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:02:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:02:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:02:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:57,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:02:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:57,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:02:57,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:02:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:57,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:02:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:02:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:02:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:58,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:02:58,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:02:58,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-10-29 12:02:58,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:58,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:58,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:02:58,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:02:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:58,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:58,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:02:58,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:02:58,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-29 12:02:58,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:58,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:02:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:02:58,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:58,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:58,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:58,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:59,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:59,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:02:59,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:02:59,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 12:02:59,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:59,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:02:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:02:59,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:59,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:59,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:59,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:59,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:02:59,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:02:59,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:59,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:02:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:02:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:59,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:02:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:59,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:59,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:59,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:59,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:02:59,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:59,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:59,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:59,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:02:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:59,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:59,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:02:59,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:02:59,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:59,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:02:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:02:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:02:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:02:59,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:02:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:02:59,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:02:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:02:59,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:02:59,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:02:59,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:02:59,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:02:59,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:02:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:02:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:02:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:02:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:02:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 12:02:59,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178345055] [2020-10-29 12:02:59,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:02:59,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:02:59,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107801209] [2020-10-29 12:02:59,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:02:59,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:02:59,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:02:59,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:02:59,426 INFO L87 Difference]: Start difference. First operand 155 states and 218 transitions. Second operand 20 states. [2020-10-29 12:03:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:03:01,059 INFO L93 Difference]: Finished difference Result 198 states and 275 transitions. [2020-10-29 12:03:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:03:01,060 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-29 12:03:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:03:01,062 INFO L225 Difference]: With dead ends: 198 [2020-10-29 12:03:01,062 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 12:03:01,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 12:03:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 12:03:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 163. [2020-10-29 12:03:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-29 12:03:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 230 transitions. [2020-10-29 12:03:01,083 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 230 transitions. Word has length 65 [2020-10-29 12:03:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:03:01,086 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 230 transitions. [2020-10-29 12:03:01,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:03:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 230 transitions. [2020-10-29 12:03:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:03:01,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:03:01,088 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-29 12:03:01,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 12:03:01,088 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:03:01,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:03:01,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1790315872, now seen corresponding path program 8 times [2020-10-29 12:03:01,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:03:01,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261288133] [2020-10-29 12:03:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:03:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:01,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:01,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:05,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:03:05,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:03:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4119 [2020-10-29 12:03:05,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:05,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:03:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:03:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:03:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:05,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:03:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:05,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:03:05,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:05,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:03:05,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:05,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:03:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:03:05,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:05,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:03:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:06,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:03:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 12:03:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3970 [2020-10-29 12:03:09,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:09,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:03:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:03:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:09,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:09,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:09,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:03:09,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:09,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 12:03:09,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:09,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:03:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:03:09,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:09,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:09,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:03:09,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:09,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 12:03:09,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:09,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:03:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:03:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:09,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:09,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:03:09,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:09,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:03:09,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:09,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:03:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:03:09,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:09,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:09,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:09,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:03:09,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:09,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:09,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:09,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:03:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:09,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:09,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:03:09,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:03:09,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:09,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:03:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:03:09,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:09,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:09,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:09,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:09,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:09,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:09,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:03:09,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:09,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:09,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:03:09,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:09,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:09,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 12:03:09,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261288133] [2020-10-29 12:03:09,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:03:09,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:03:09,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657135635] [2020-10-29 12:03:09,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:03:09,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:03:09,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:03:09,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:03:09,966 INFO L87 Difference]: Start difference. First operand 163 states and 230 transitions. Second operand 21 states. [2020-10-29 12:03:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:03:12,053 INFO L93 Difference]: Finished difference Result 220 states and 316 transitions. [2020-10-29 12:03:12,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:03:12,054 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-29 12:03:12,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:03:12,056 INFO L225 Difference]: With dead ends: 220 [2020-10-29 12:03:12,056 INFO L226 Difference]: Without dead ends: 215 [2020-10-29 12:03:12,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 12:03:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-29 12:03:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 166. [2020-10-29 12:03:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-29 12:03:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 235 transitions. [2020-10-29 12:03:12,077 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 235 transitions. Word has length 65 [2020-10-29 12:03:12,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:03:12,077 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 235 transitions. [2020-10-29 12:03:12,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:03:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 235 transitions. [2020-10-29 12:03:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:03:12,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:03:12,079 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 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] [2020-10-29 12:03:12,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 12:03:12,080 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:03:12,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:03:12,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1695336256, now seen corresponding path program 9 times [2020-10-29 12:03:12,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:03:12,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863432241] [2020-10-29 12:03:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:03:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:12,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:17,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:03:17,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:03:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 12:03:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:17,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:03:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:03:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:03:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:03:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:03:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:17,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:17,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:03:17,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:03:17,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:17,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:03:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:03:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:17,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:03:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:17,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:18,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:20,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:20,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:03:20,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:03:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3133 [2020-10-29 12:03:20,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:20,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:03:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:03:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:20,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:20,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:20,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:21,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:03:21,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:03:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-29 12:03:21,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:21,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:03:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:03:21,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:21,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:21,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:03:21,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:03:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-29 12:03:21,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:21,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:03:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:03:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:21,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:21,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:03:21,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:03:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 12:03:21,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:21,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:03:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:03:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:21,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:03:21,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:21,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:03:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:21,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:03:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:21,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:03:21,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:03:21,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:21,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:03:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:03:21,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:03:21,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:21,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:21,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:21,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:21,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:21,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:03:21,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:21,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:03:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 12:03:21,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863432241] [2020-10-29 12:03:21,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:03:21,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:03:21,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619981029] [2020-10-29 12:03:21,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:03:21,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:03:21,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:03:21,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:03:21,905 INFO L87 Difference]: Start difference. First operand 166 states and 235 transitions. Second operand 22 states. [2020-10-29 12:03:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:03:24,106 INFO L93 Difference]: Finished difference Result 208 states and 288 transitions. [2020-10-29 12:03:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:03:24,107 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-10-29 12:03:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:03:24,108 INFO L225 Difference]: With dead ends: 208 [2020-10-29 12:03:24,108 INFO L226 Difference]: Without dead ends: 203 [2020-10-29 12:03:24,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=195, Invalid=1211, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 12:03:24,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-29 12:03:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 166. [2020-10-29 12:03:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-29 12:03:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 235 transitions. [2020-10-29 12:03:24,127 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 235 transitions. Word has length 65 [2020-10-29 12:03:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:03:24,128 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 235 transitions. [2020-10-29 12:03:24,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:03:24,128 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 235 transitions. [2020-10-29 12:03:24,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:03:24,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:03:24,130 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-29 12:03:24,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 12:03:24,130 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:03:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:03:24,130 INFO L82 PathProgramCache]: Analyzing trace with hash -563504864, now seen corresponding path program 10 times [2020-10-29 12:03:24,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:03:24,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010348895] [2020-10-29 12:03:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:03:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:27,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:03:27,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:03:27,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3630 [2020-10-29 12:03:27,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:27,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:27,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:03:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:03:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:03:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:03:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:27,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:03:27,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:03:27,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:27,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:03:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:03:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:03:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:27,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:30,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:30,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:03:30,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 12:03:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-10-29 12:03:30,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:30,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:03:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:03:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:30,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:30,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:30,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:30,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:30,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:31,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:03:31,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:03:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-10-29 12:03:31,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:31,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:31,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:03:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:03:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:31,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:31,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:03:31,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:03:31,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-29 12:03:31,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:31,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:03:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:03:31,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:31,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:03:31,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:03:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 12:03:31,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:31,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:03:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:03:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:31,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:31,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:31,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:03:31,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:31,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:03:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:31,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:03:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:31,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:03:31,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:31,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:03:31,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:31,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:03:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:03:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:31,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:31,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:31,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:31,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:03:31,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:31,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:03:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 12:03:32,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010348895] [2020-10-29 12:03:32,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:03:32,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:03:32,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354452510] [2020-10-29 12:03:32,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:03:32,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:03:32,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:03:32,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:03:32,025 INFO L87 Difference]: Start difference. First operand 166 states and 235 transitions. Second operand 21 states. [2020-10-29 12:03:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:03:33,931 INFO L93 Difference]: Finished difference Result 217 states and 303 transitions. [2020-10-29 12:03:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:03:33,932 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-29 12:03:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:03:33,934 INFO L225 Difference]: With dead ends: 217 [2020-10-29 12:03:33,934 INFO L226 Difference]: Without dead ends: 212 [2020-10-29 12:03:33,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 12:03:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-29 12:03:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 173. [2020-10-29 12:03:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-29 12:03:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 246 transitions. [2020-10-29 12:03:33,955 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 246 transitions. Word has length 65 [2020-10-29 12:03:33,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:03:33,955 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 246 transitions. [2020-10-29 12:03:33,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:03:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 246 transitions. [2020-10-29 12:03:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:03:33,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:03:33,958 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-29 12:03:33,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 12:03:33,958 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:03:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:03:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1277251808, now seen corresponding path program 11 times [2020-10-29 12:03:33,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:03:33,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497328128] [2020-10-29 12:03:33,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:03:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:34,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:38,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:38,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:03:38,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:03:38,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4975 [2020-10-29 12:03:38,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:38,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:03:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:03:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:03:38,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:38,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:03:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:39,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:03:39,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:03:39,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:39,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:03:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:03:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:39,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:03:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:39,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:41,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:41,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:03:41,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 12:03:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2609 [2020-10-29 12:03:41,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:41,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:41,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:03:41,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:41,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:03:41,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:41,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:41,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:42,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:03:42,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:03:42,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-29 12:03:42,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:42,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:03:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:03:42,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:42,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:03:42,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:03:42,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 12:03:42,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:42,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:03:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:03:42,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:42,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:42,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:03:42,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:42,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:03:42,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:42,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:03:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:03:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:42,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:42,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:42,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:42,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:03:42,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:42,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:03:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:42,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:03:42,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:03:42,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:42,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:03:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:03:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:42,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:42,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:42,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:42,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:03:42,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:42,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:03:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:42,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 12:03:42,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497328128] [2020-10-29 12:03:42,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:03:42,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:03:42,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504590607] [2020-10-29 12:03:42,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:03:42,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:03:42,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:03:42,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:03:42,917 INFO L87 Difference]: Start difference. First operand 173 states and 246 transitions. Second operand 23 states. [2020-10-29 12:03:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:03:45,241 INFO L93 Difference]: Finished difference Result 230 states and 327 transitions. [2020-10-29 12:03:45,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:03:45,244 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-10-29 12:03:45,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:03:45,246 INFO L225 Difference]: With dead ends: 230 [2020-10-29 12:03:45,246 INFO L226 Difference]: Without dead ends: 225 [2020-10-29 12:03:45,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 12:03:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-29 12:03:45,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 186. [2020-10-29 12:03:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-29 12:03:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 267 transitions. [2020-10-29 12:03:45,268 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 267 transitions. Word has length 65 [2020-10-29 12:03:45,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:03:45,269 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 267 transitions. [2020-10-29 12:03:45,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:03:45,269 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 267 transitions. [2020-10-29 12:03:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 12:03:45,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:03:45,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-29 12:03:45,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 12:03:45,271 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:03:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:03:45,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1395110984, now seen corresponding path program 4 times [2020-10-29 12:03:45,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:03:45,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329724339] [2020-10-29 12:03:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:03:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:45,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:45,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 12:03:45,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 12:03:45,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:45,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:03:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:03:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:03:45,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:45,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:03:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:45,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:45,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:45,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:03:45,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:03:45,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:45,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:03:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:03:45,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:45,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:03:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:45,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:45,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:03:45,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:03:45,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:45,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:45,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:03:45,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:45,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:03:45,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:45,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:45,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:45,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:03:45,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:45,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:03:45,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:45,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:03:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:03:45,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-29 12:03:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:45,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:45,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:45,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:03:45,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:45,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:03:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:45,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:45,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:03:45,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:03:45,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:45,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:45,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:03:45,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:03:45,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:03:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:45,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:45,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:45,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:03:45,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:03:45,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:45,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:03:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:03:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:45,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:45,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:45,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:45,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:03:45,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:45,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:03:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 12:03:46,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329724339] [2020-10-29 12:03:46,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:03:46,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:03:46,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673455620] [2020-10-29 12:03:46,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:03:46,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:03:46,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:03:46,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:03:46,007 INFO L87 Difference]: Start difference. First operand 186 states and 267 transitions. Second operand 18 states. [2020-10-29 12:03:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:03:47,388 INFO L93 Difference]: Finished difference Result 208 states and 298 transitions. [2020-10-29 12:03:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:03:47,389 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-10-29 12:03:47,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:03:47,390 INFO L225 Difference]: With dead ends: 208 [2020-10-29 12:03:47,391 INFO L226 Difference]: Without dead ends: 203 [2020-10-29 12:03:47,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:03:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-29 12:03:47,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 194. [2020-10-29 12:03:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-29 12:03:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 280 transitions. [2020-10-29 12:03:47,412 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 280 transitions. Word has length 56 [2020-10-29 12:03:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:03:47,412 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 280 transitions. [2020-10-29 12:03:47,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:03:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 280 transitions. [2020-10-29 12:03:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 12:03:47,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:03:47,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-29 12:03:47,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 12:03:47,414 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:03:47,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:03:47,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1195024664, now seen corresponding path program 12 times [2020-10-29 12:03:47,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:03:47,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536692278] [2020-10-29 12:03:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:03:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:47,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:47,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 12:03:47,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 12:03:47,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:47,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:03:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:03:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:03:47,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:03:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:47,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:47,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:47,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:03:47,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:47,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:03:47,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:47,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:03:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:03:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:03:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:47,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:03:47,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:03:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:47,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:03:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:03:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:47,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:47,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:03:47,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:03:47,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:47,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:03:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:03:47,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:47,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:47,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:47,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:47,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:47,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:03:47,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:47,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:03:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:47,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:47,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:47,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:03:47,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:47,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:03:47,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:47,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:03:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:03:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:03:47,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:48,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:48,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:03:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:03:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:48,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:03:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:03:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:48,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:48,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:48,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:48,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:48,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:48,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:03:48,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:48,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:48,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:03:48,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:48,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:48,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 12:03:48,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536692278] [2020-10-29 12:03:48,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:03:48,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:03:48,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482435144] [2020-10-29 12:03:48,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:03:48,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:03:48,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:03:48,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:03:48,122 INFO L87 Difference]: Start difference. First operand 194 states and 280 transitions. Second operand 18 states. [2020-10-29 12:03:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:03:49,547 INFO L93 Difference]: Finished difference Result 207 states and 294 transitions. [2020-10-29 12:03:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:03:49,548 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-10-29 12:03:49,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:03:49,550 INFO L225 Difference]: With dead ends: 207 [2020-10-29 12:03:49,550 INFO L226 Difference]: Without dead ends: 202 [2020-10-29 12:03:49,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:03:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-29 12:03:49,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2020-10-29 12:03:49,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-29 12:03:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 280 transitions. [2020-10-29 12:03:49,572 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 280 transitions. Word has length 56 [2020-10-29 12:03:49,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:03:49,572 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 280 transitions. [2020-10-29 12:03:49,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:03:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 280 transitions. [2020-10-29 12:03:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 12:03:49,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:03:49,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-29 12:03:49,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 12:03:49,575 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:03:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:03:49,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1871060648, now seen corresponding path program 13 times [2020-10-29 12:03:49,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:03:49,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189092403] [2020-10-29 12:03:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:03:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:49,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:49,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 12:03:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-29 12:03:49,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:49,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:03:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:03:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:03:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:03:49,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:03:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:49,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:03:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:03:49,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:49,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:03:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:03:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:49,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:03:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:50,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:50,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:03:50,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:03:50,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:50,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:03:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:03:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:50,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:50,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:03:50,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:03:50,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:50,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:03:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:03:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:50,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:50,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:50,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:50,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:03:50,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:50,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:50,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:03:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:50,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:50,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:50,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:03:50,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:50,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:03:50,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:50,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:03:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:03:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:03:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:50,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:03:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:03:50,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:50,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:03:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:03:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:50,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:50,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:50,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:50,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:03:50,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:50,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:03:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:50,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 12:03:50,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189092403] [2020-10-29 12:03:50,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:03:50,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:03:50,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721785699] [2020-10-29 12:03:50,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:03:50,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:03:50,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:03:50,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:03:50,536 INFO L87 Difference]: Start difference. First operand 194 states and 280 transitions. Second operand 17 states. [2020-10-29 12:03:51,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:03:51,818 INFO L93 Difference]: Finished difference Result 204 states and 291 transitions. [2020-10-29 12:03:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:03:51,818 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-29 12:03:51,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:03:51,820 INFO L225 Difference]: With dead ends: 204 [2020-10-29 12:03:51,820 INFO L226 Difference]: Without dead ends: 194 [2020-10-29 12:03:51,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:03:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-29 12:03:51,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-29 12:03:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-29 12:03:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 278 transitions. [2020-10-29 12:03:51,845 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 278 transitions. Word has length 56 [2020-10-29 12:03:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:03:51,845 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 278 transitions. [2020-10-29 12:03:51,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:03:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 278 transitions. [2020-10-29 12:03:51,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:03:51,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:03:51,848 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:03:51,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 12:03:51,848 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:03:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:03:51,849 INFO L82 PathProgramCache]: Analyzing trace with hash 796177220, now seen corresponding path program 5 times [2020-10-29 12:03:51,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:03:51,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888780935] [2020-10-29 12:03:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:03:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:54,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:54,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:03:54,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:03:54,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2384 [2020-10-29 12:03:54,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:54,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:03:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:03:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:03:54,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:03:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:54,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:54,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:03:54,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:03:54,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:54,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:03:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:03:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:03:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:54,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:54,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:54,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:55,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:03:55,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:03:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-29 12:03:55,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:55,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:03:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:03:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:55,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:03:55,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:03:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 12:03:55,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:55,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:03:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:03:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:55,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:03:55,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:55,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:03:55,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:55,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:03:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:03:55,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:55,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:55,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:55,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:55,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:03:55,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:55,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:55,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:03:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:55,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:03:55,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:03:55,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:55,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:03:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:03:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:03:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:55,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:55,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:55,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:03:55,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:55,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:03:55,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:55,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:55,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:03:55,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:55,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:03:55,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:55,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:55,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:55,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:55,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:55,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:03:55,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:55,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:03:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:03:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 12:03:55,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888780935] [2020-10-29 12:03:55,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:03:55,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:03:55,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272387334] [2020-10-29 12:03:55,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:03:55,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:03:55,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:03:55,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:03:55,869 INFO L87 Difference]: Start difference. First operand 194 states and 278 transitions. Second operand 23 states. [2020-10-29 12:03:57,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:03:57,984 INFO L93 Difference]: Finished difference Result 222 states and 315 transitions. [2020-10-29 12:03:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:03:57,985 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2020-10-29 12:03:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:03:57,987 INFO L225 Difference]: With dead ends: 222 [2020-10-29 12:03:57,987 INFO L226 Difference]: Without dead ends: 217 [2020-10-29 12:03:57,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=197, Invalid=1285, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 12:03:57,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-29 12:03:58,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 197. [2020-10-29 12:03:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 12:03:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 283 transitions. [2020-10-29 12:03:58,007 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 283 transitions. Word has length 64 [2020-10-29 12:03:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:03:58,008 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 283 transitions. [2020-10-29 12:03:58,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:03:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 283 transitions. [2020-10-29 12:03:58,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:03:58,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:03:58,010 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2020-10-29 12:03:58,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 12:03:58,010 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:03:58,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:03:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash 41695204, now seen corresponding path program 14 times [2020-10-29 12:03:58,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:03:58,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223416078] [2020-10-29 12:03:58,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:03:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:58,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:58,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:58,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:03:58,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:58,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-29 12:03:58,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:58,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:58,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:03:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:03:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:03:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:58,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:03:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:58,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:58,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:03:58,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:03:58,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:58,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:03:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:03:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:03:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:58,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:03:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 12:03:58,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:58,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:03:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:03:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:58,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:58,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:58,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:03:58,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:58,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:03:58,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:58,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:03:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:03:58,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:58,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:58,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:58,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:03:58,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:03:58,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:58,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:03:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:03:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:03:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:58,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:58,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:58,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:58,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:03:58,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:58,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:03:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:58,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:03:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:58,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:58,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:58,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:03:58,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:58,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:03:58,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:58,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:58,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:03:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:03:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:03:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:58,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:58,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:03:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:03:58,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:58,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:03:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:03:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:58,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:03:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:03:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:03:58,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:03:58,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:03:58,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:03:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:03:58,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:03:58,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:03:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:03:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:03:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:03:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:03:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 12:03:59,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223416078] [2020-10-29 12:03:59,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:03:59,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:03:59,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094782689] [2020-10-29 12:03:59,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:03:59,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:03:59,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:03:59,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:03:59,073 INFO L87 Difference]: Start difference. First operand 197 states and 283 transitions. Second operand 20 states. [2020-10-29 12:03:59,510 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-29 12:04:01,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:04:01,090 INFO L93 Difference]: Finished difference Result 230 states and 328 transitions. [2020-10-29 12:04:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:04:01,091 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2020-10-29 12:04:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:04:01,093 INFO L225 Difference]: With dead ends: 230 [2020-10-29 12:04:01,094 INFO L226 Difference]: Without dead ends: 225 [2020-10-29 12:04:01,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:04:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-29 12:04:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 204. [2020-10-29 12:04:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-29 12:04:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 294 transitions. [2020-10-29 12:04:01,127 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 294 transitions. Word has length 64 [2020-10-29 12:04:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:04:01,127 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 294 transitions. [2020-10-29 12:04:01,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:04:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 294 transitions. [2020-10-29 12:04:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:04:01,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:04:01,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2020-10-29 12:04:01,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 12:04:01,130 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:04:01,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:04:01,131 INFO L82 PathProgramCache]: Analyzing trace with hash 144826852, now seen corresponding path program 15 times [2020-10-29 12:04:01,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:04:01,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072135842] [2020-10-29 12:04:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:04:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:04,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:04:04,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:04:04,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3325 [2020-10-29 12:04:04,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:04,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:04:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:04:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:04:04,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:04:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:04:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:04:04,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:04,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:04:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:04:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:04,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:04:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:04,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:04,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:05,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:05,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:04:05,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:04:05,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-29 12:04:05,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:05,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:04:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:04:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:05,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:05,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:05,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:04:05,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:04:05,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-29 12:04:05,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:05,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:05,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:04:05,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:05,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:04:05,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:06,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:06,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:04:06,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:04:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 12:04:06,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:06,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:04:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:04:06,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:06,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:06,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:06,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:06,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:04:06,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:06,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:04:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:04:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:06,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:06,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:04:06,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:04:06,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:06,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:04:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:04:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:04:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:06,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:06,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:04:06,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:04:06,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:06,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:04:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:04:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:06,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:06,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:06,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:06,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:04:06,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:06,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:04:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:06,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 12:04:06,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072135842] [2020-10-29 12:04:06,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:04:06,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:04:06,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806120945] [2020-10-29 12:04:06,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:04:06,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:04:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:04:06,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:04:06,550 INFO L87 Difference]: Start difference. First operand 204 states and 294 transitions. Second operand 23 states. [2020-10-29 12:04:08,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:04:08,571 INFO L93 Difference]: Finished difference Result 247 states and 355 transitions. [2020-10-29 12:04:08,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:04:08,572 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2020-10-29 12:04:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:04:08,575 INFO L225 Difference]: With dead ends: 247 [2020-10-29 12:04:08,575 INFO L226 Difference]: Without dead ends: 242 [2020-10-29 12:04:08,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=190, Invalid=1216, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 12:04:08,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-29 12:04:08,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 215. [2020-10-29 12:04:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-29 12:04:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 311 transitions. [2020-10-29 12:04:08,597 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 311 transitions. Word has length 64 [2020-10-29 12:04:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:04:08,599 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 311 transitions. [2020-10-29 12:04:08,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:04:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 311 transitions. [2020-10-29 12:04:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:04:08,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:04:08,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2020-10-29 12:04:08,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 12:04:08,602 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:04:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:04:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash -609655164, now seen corresponding path program 16 times [2020-10-29 12:04:08,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:04:08,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774967548] [2020-10-29 12:04:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:04:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:08,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:08,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:04:08,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-29 12:04:08,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:08,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:04:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:04:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:04:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:04:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:08,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:04:08,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:04:08,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:08,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:04:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:04:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:04:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:09,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:09,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:04:09,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:09,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 12:04:09,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:09,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:04:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:04:09,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:09,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:09,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:04:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 12:04:09,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:09,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:04:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:04:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:09,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:09,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:04:09,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:09,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:04:09,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:09,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:04:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:04:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:09,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:09,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:09,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:09,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:04:09,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:09,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:04:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:04:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:09,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:09,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:09,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:04:09,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:04:09,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:09,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:04:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:04:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:04:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:09,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:09,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:09,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:04:09,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:04:09,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:09,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:04:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:04:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:09,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:09,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:09,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:09,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:09,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:04:09,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:09,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:09,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:04:09,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:09,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:09,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 12:04:09,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774967548] [2020-10-29 12:04:09,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:04:09,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:04:09,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810220275] [2020-10-29 12:04:09,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:04:09,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:04:09,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:04:09,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:04:09,663 INFO L87 Difference]: Start difference. First operand 215 states and 311 transitions. Second operand 20 states. [2020-10-29 12:04:10,108 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-29 12:04:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:04:11,745 INFO L93 Difference]: Finished difference Result 233 states and 331 transitions. [2020-10-29 12:04:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:04:11,746 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2020-10-29 12:04:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:04:11,748 INFO L225 Difference]: With dead ends: 233 [2020-10-29 12:04:11,748 INFO L226 Difference]: Without dead ends: 228 [2020-10-29 12:04:11,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:04:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-29 12:04:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 215. [2020-10-29 12:04:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-29 12:04:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 311 transitions. [2020-10-29 12:04:11,769 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 311 transitions. Word has length 64 [2020-10-29 12:04:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:04:11,769 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 311 transitions. [2020-10-29 12:04:11,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:04:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 311 transitions. [2020-10-29 12:04:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:04:11,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:04:11,772 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2020-10-29 12:04:11,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 12:04:11,772 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:04:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:04:11,772 INFO L82 PathProgramCache]: Analyzing trace with hash -533218908, now seen corresponding path program 17 times [2020-10-29 12:04:11,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:04:11,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226211790] [2020-10-29 12:04:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:04:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:12,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:12,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:12,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:15,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:04:15,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:04:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3942 [2020-10-29 12:04:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:15,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:04:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:04:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:04:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:15,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:04:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:15,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:04:15,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:15,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:04:15,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:15,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:04:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:04:15,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:15,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:04:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:15,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:16,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:16,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:04:16,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:04:16,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-10-29 12:04:16,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:16,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:04:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:04:16,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:16,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:16,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:16,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:16,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:16,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:16,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:04:16,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:04:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 12:04:16,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:16,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:04:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:04:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:17,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:17,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:17,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:04:17,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:04:17,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 12:04:17,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:17,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:04:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:04:17,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:17,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:17,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:17,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:17,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:04:17,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:17,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:04:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:04:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:17,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:04:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:04:17,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:17,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:04:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:04:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:04:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:17,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:17,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:17,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:04:17,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:04:17,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:17,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:04:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:04:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:17,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:17,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:17,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:17,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:04:17,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:17,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:04:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 12:04:17,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226211790] [2020-10-29 12:04:17,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:04:17,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:04:17,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423000334] [2020-10-29 12:04:17,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:04:17,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:04:17,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:04:17,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:04:17,453 INFO L87 Difference]: Start difference. First operand 215 states and 311 transitions. Second operand 22 states. [2020-10-29 12:04:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:04:19,428 INFO L93 Difference]: Finished difference Result 269 states and 385 transitions. [2020-10-29 12:04:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:04:19,429 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 64 [2020-10-29 12:04:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:04:19,432 INFO L225 Difference]: With dead ends: 269 [2020-10-29 12:04:19,432 INFO L226 Difference]: Without dead ends: 264 [2020-10-29 12:04:19,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 12:04:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-29 12:04:19,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 219. [2020-10-29 12:04:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-29 12:04:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 317 transitions. [2020-10-29 12:04:19,453 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 317 transitions. Word has length 64 [2020-10-29 12:04:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:04:19,453 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 317 transitions. [2020-10-29 12:04:19,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:04:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 317 transitions. [2020-10-29 12:04:19,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:04:19,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:04:19,456 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2020-10-29 12:04:19,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 12:04:19,456 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:04:19,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:04:19,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1184569276, now seen corresponding path program 18 times [2020-10-29 12:04:19,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:04:19,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551886388] [2020-10-29 12:04:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:04:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:19,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:19,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:19,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:19,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:19,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:20,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:22,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:04:22,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:04:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3274 [2020-10-29 12:04:22,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:22,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:04:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 12:04:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:04:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:04:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:22,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:22,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:22,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:04:22,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:22,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:04:22,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:22,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:04:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:04:22,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:04:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:22,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:24,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:24,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:04:24,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:04:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-10-29 12:04:24,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:24,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:04:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:04:24,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:24,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:24,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:24,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:25,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:25,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:04:25,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:04:25,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-29 12:04:25,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:25,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:04:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:04:25,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:25,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:25,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:25,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:25,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:04:25,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:04:25,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 12:04:25,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:25,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:04:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:04:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:25,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:25,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:25,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:25,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:25,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:04:25,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:25,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:04:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:04:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:25,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:25,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:04:25,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:04:25,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:25,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:04:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:04:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:04:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:25,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:25,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:25,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:04:25,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:04:25,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:25,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:04:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:04:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:25,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:25,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:25,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:25,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:25,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:04:25,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:25,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:04:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 12:04:25,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551886388] [2020-10-29 12:04:25,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:04:25,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:04:25,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923918978] [2020-10-29 12:04:25,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:04:25,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:04:25,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:04:25,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:04:25,679 INFO L87 Difference]: Start difference. First operand 219 states and 317 transitions. Second operand 23 states. [2020-10-29 12:04:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:04:27,850 INFO L93 Difference]: Finished difference Result 242 states and 346 transitions. [2020-10-29 12:04:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:04:27,851 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2020-10-29 12:04:27,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:04:27,853 INFO L225 Difference]: With dead ends: 242 [2020-10-29 12:04:27,853 INFO L226 Difference]: Without dead ends: 237 [2020-10-29 12:04:27,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 12:04:27,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-29 12:04:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 219. [2020-10-29 12:04:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-29 12:04:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 317 transitions. [2020-10-29 12:04:27,873 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 317 transitions. Word has length 64 [2020-10-29 12:04:27,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:04:27,873 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 317 transitions. [2020-10-29 12:04:27,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:04:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 317 transitions. [2020-10-29 12:04:27,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 12:04:27,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:04:27,875 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 12:04:27,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 12:04:27,876 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:04:27,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:04:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1978269224, now seen corresponding path program 19 times [2020-10-29 12:04:27,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:04:27,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952417577] [2020-10-29 12:04:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:04:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:29,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:31,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 12:04:31,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 12:04:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3675 [2020-10-29 12:04:31,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:31,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:04:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:04:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:04:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:04:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:31,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:04:31,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:31,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:04:31,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:31,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:31,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:04:31,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:31,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:04:31,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:31,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:04:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:34,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:34,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:04:34,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:04:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2819 [2020-10-29 12:04:34,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:34,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:04:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:04:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:34,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:34,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:34,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:34,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:34,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:34,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:34,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:04:34,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:04:34,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-29 12:04:34,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:34,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:04:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:04:34,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:34,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:35,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:04:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:04:35,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:35,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:35,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:35,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:04:35,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:35,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:04:35,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:35,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:35,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:04:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:04:35,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:35,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:35,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:35,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:35,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:35,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:04:35,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:35,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:04:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:35,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:04:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:35,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:35,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:04:35,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:04:35,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:35,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:04:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:04:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:04:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:35,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:35,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:04:35,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:35,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:04:35,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:35,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:04:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:04:35,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:35,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:35,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:35,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:04:35,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:35,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:04:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:35,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 12:04:35,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952417577] [2020-10-29 12:04:35,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:04:35,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:04:35,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035366039] [2020-10-29 12:04:35,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:04:35,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:04:35,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:04:35,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:04:35,421 INFO L87 Difference]: Start difference. First operand 219 states and 317 transitions. Second operand 22 states. [2020-10-29 12:04:37,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:04:37,498 INFO L93 Difference]: Finished difference Result 244 states and 346 transitions. [2020-10-29 12:04:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:04:37,500 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 72 [2020-10-29 12:04:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:04:37,502 INFO L225 Difference]: With dead ends: 244 [2020-10-29 12:04:37,502 INFO L226 Difference]: Without dead ends: 239 [2020-10-29 12:04:37,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 12:04:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-29 12:04:37,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 212. [2020-10-29 12:04:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-29 12:04:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 306 transitions. [2020-10-29 12:04:37,521 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 306 transitions. Word has length 72 [2020-10-29 12:04:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:04:37,522 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 306 transitions. [2020-10-29 12:04:37,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:04:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 306 transitions. [2020-10-29 12:04:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 12:04:37,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:04:37,524 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 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] [2020-10-29 12:04:37,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 12:04:37,524 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:04:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:04:37,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1694838984, now seen corresponding path program 20 times [2020-10-29 12:04:37,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:04:37,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415697708] [2020-10-29 12:04:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:04:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:37,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:38,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:41,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 12:04:41,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 12:04:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3945 [2020-10-29 12:04:41,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:41,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:04:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 12:04:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 12:04:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:41,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:04:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:41,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:41,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:04:41,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:04:41,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:41,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:04:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:04:41,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:04:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:42,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:43,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:43,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:04:43,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 12:04:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-10-29 12:04:43,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:43,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:04:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:04:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:43,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:43,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:43,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:04:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 12:04:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:43,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:04:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:04:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:43,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:43,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:43,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:04:43,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:43,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:04:43,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:43,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:04:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:04:43,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:44,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:44,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:04:44,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:04:44,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:44,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:04:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:04:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:44,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 12:04:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:44,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:44,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:44,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:44,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:04:44,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:44,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:44,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:04:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:44,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:04:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:44,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:44,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:04:44,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:04:44,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:44,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:04:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:04:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:04:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:44,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:44,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:04:44,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:04:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:44,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:04:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:04:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:44,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:04:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:04:44,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:04:44,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:04:44,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:04:44,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:04:44,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:04:44,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:04:44,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:04:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:04:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:04:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:04:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:04:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 12:04:44,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415697708] [2020-10-29 12:04:44,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:04:44,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:04:44,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651949134] [2020-10-29 12:04:44,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:04:44,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:04:44,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:04:44,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:04:44,536 INFO L87 Difference]: Start difference. First operand 212 states and 306 transitions. Second operand 23 states. [2020-10-29 12:04:45,128 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-29 12:04:45,685 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-29 12:04:45,850 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-29 12:04:46,031 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53