/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/skipped.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:59:24,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:59:24,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:59:24,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:59:24,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:59:24,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:59:24,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:59:24,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:59:24,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:59:24,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:59:24,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:59:24,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:59:24,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:59:24,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:59:24,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:59:24,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:59:24,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:59:24,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:59:24,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:59:24,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:59:24,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:59:24,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:59:25,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:59:25,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:59:25,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:59:25,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:59:25,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:59:25,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:59:25,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:59:25,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:59:25,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:59:25,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:59:25,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:59:25,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:59:25,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:59:25,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:59:25,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:59:25,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:59:25,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:59:25,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:59:25,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:59:25,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:59:25,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:59:25,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:59:25,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:59:25,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:59:25,112 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:59:25,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:59:25,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:59:25,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:59:25,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:59:25,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:59:25,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:59:25,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:59:25,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:59:25,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:59:25,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:59:25,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:59:25,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:59:25,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:59:25,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:59:25,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:59:25,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:59:25,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:59:25,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:59:25,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:59:25,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:59:25,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:59:25,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:59:25,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:59:25,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:59:25,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:59:25,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:59:25,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:59:25,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:59:25,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:59:25,576 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:59:25,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skipped.c [2020-10-27 14:59:25,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd28df43e/94908242c37f4c43b914d60d99d1e700/FLAGa9e3298e2 [2020-10-27 14:59:26,201 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:59:26,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skipped.c [2020-10-27 14:59:26,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd28df43e/94908242c37f4c43b914d60d99d1e700/FLAGa9e3298e2 [2020-10-27 14:59:26,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd28df43e/94908242c37f4c43b914d60d99d1e700 [2020-10-27 14:59:26,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:59:26,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:59:26,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:59:26,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:59:26,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:59:26,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:26" (1/1) ... [2020-10-27 14:59:26,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2ad70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26, skipping insertion in model container [2020-10-27 14:59:26,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:26" (1/1) ... [2020-10-27 14:59:26,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:59:26,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:59:26,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:59:26,917 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:59:26,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:59:26,975 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:59:26,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26 WrapperNode [2020-10-27 14:59:26,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:59:26,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:59:26,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:59:26,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:59:26,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26" (1/1) ... [2020-10-27 14:59:26,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26" (1/1) ... [2020-10-27 14:59:27,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26" (1/1) ... [2020-10-27 14:59:27,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26" (1/1) ... [2020-10-27 14:59:27,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26" (1/1) ... [2020-10-27 14:59:27,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26" (1/1) ... [2020-10-27 14:59:27,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26" (1/1) ... [2020-10-27 14:59:27,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:59:27,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:59:27,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:59:27,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:59:27,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:59:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:59:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:59:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:59:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:59:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:59:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:59:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:59:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:59:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:59:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:59:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:59:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:59:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:59:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:59:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:59:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:59:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:59:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:59:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:59:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:59:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:59:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:59:27,501 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:59:27,501 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:59:27,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:27 BoogieIcfgContainer [2020-10-27 14:59:27,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:59:27,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:59:27,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:59:27,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:59:27,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:59:26" (1/3) ... [2020-10-27 14:59:27,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7991bc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:27, skipping insertion in model container [2020-10-27 14:59:27,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:26" (2/3) ... [2020-10-27 14:59:27,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7991bc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:27, skipping insertion in model container [2020-10-27 14:59:27,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:27" (3/3) ... [2020-10-27 14:59:27,520 INFO L111 eAbstractionObserver]: Analyzing ICFG skipped.c [2020-10-27 14:59:27,535 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:59:27,540 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:59:27,554 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:59:27,600 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:59:27,600 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:59:27,600 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:59:27,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:59:27,601 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:59:27,601 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:59:27,601 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:59:27,601 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:59:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-27 14:59:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:59:27,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:27,630 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] [2020-10-27 14:59:27,631 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:27,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1434902792, now seen corresponding path program 1 times [2020-10-27 14:59:27,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:27,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990673963] [2020-10-27 14:59:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:28,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:28,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:28,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:59:28,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:59:28,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-10-27 14:59:28,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:59:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:28,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:59:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:28,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:28,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:28,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:59:28,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:28,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:28,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:28,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:28,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:28,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:28,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:28,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:28,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:59:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:28,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:28,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990673963] [2020-10-27 14:59:28,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:59:28,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:59:29,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016716659] [2020-10-27 14:59:29,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:59:29,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:29,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:59:29,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:59:29,022 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-27 14:59:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:29,152 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2020-10-27 14:59:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:59:29,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-27 14:59:29,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:29,161 INFO L225 Difference]: With dead ends: 70 [2020-10-27 14:59:29,162 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 14:59:29,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:59:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 14:59:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-27 14:59:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:59:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:59:29,207 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 23 [2020-10-27 14:59:29,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:29,207 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:59:29,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:59:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:59:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:59:29,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:29,209 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] [2020-10-27 14:59:29,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:59:29,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:29,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1693068230, now seen corresponding path program 1 times [2020-10-27 14:59:29,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:29,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086260791] [2020-10-27 14:59:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:29,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:29,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:59:29,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:59:29,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-27 14:59:29,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:59:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:59:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:59:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:30,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:30,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:30,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:30,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:30,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:59:30,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:30,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:30,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:30,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:30,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:30,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:59:30,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:59:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:59:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:30,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086260791] [2020-10-27 14:59:30,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:59:30,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 14:59:30,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792848250] [2020-10-27 14:59:30,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:59:30,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:30,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:59:30,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:59:30,149 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2020-10-27 14:59:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:30,678 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-27 14:59:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:59:30,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-27 14:59:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:30,682 INFO L225 Difference]: With dead ends: 55 [2020-10-27 14:59:30,682 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:59:30,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:59:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:59:30,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2020-10-27 14:59:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:59:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 14:59:30,697 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2020-10-27 14:59:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:30,697 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 14:59:30,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:59:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 14:59:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:59:30,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:30,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:30,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:59:30,699 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:30,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:30,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1007369127, now seen corresponding path program 1 times [2020-10-27 14:59:30,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:30,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973345945] [2020-10-27 14:59:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:30,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:31,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:31,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:59:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-27 14:59:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:59:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:59:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:59:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:31,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:31,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:31,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:31,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:31,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:59:31,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:31,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:31,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:31,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:31,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:31,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:31,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973345945] [2020-10-27 14:59:31,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:31,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:59:31,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613295772] [2020-10-27 14:59:31,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:59:31,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:31,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:59:31,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:59:31,355 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 10 states. [2020-10-27 14:59:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:31,772 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-10-27 14:59:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:59:31,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-27 14:59:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:31,774 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:59:31,775 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 14:59:31,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:59:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 14:59:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2020-10-27 14:59:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:59:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-27 14:59:31,788 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 28 [2020-10-27 14:59:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:31,789 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-27 14:59:31,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:59:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-27 14:59:31,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:59:31,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:31,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:31,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:59:31,791 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:31,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:31,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1265534565, now seen corresponding path program 1 times [2020-10-27 14:59:31,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:31,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34538122] [2020-10-27 14:59:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:31,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:32,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:32,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:59:32,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-27 14:59:32,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:59:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:59:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:59:32,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:32,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:32,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:32,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:32,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:59:32,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:32,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:32,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:32,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:32,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:32,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:32,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34538122] [2020-10-27 14:59:32,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:32,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:59:32,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296966372] [2020-10-27 14:59:32,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:59:32,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:32,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:59:32,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:59:32,307 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 11 states. [2020-10-27 14:59:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:32,670 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-27 14:59:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:59:32,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-27 14:59:32,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:32,675 INFO L225 Difference]: With dead ends: 66 [2020-10-27 14:59:32,675 INFO L226 Difference]: Without dead ends: 63 [2020-10-27 14:59:32,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:59:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-27 14:59:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 40. [2020-10-27 14:59:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 14:59:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-27 14:59:32,685 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 28 [2020-10-27 14:59:32,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:32,686 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-27 14:59:32,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:59:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-27 14:59:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:59:32,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:32,687 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, 1, 1] [2020-10-27 14:59:32,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:59:32,688 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:32,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:32,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1259030612, now seen corresponding path program 1 times [2020-10-27 14:59:32,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:32,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951602321] [2020-10-27 14:59:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:32,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:33,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:33,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:59:33,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-27 14:59:33,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:59:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:59:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:59:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:59:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:33,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:33,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:33,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:33,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:33,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:33,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:33,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:33,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:33,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:33,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:59:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:33,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:33,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:33,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:33,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:33,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:33,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:59:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:33,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951602321] [2020-10-27 14:59:33,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:33,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:59:33,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096424257] [2020-10-27 14:59:33,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:59:33,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:33,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:59:33,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:59:33,255 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 10 states. [2020-10-27 14:59:33,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:33,893 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-10-27 14:59:33,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:59:33,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-27 14:59:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:33,896 INFO L225 Difference]: With dead ends: 70 [2020-10-27 14:59:33,896 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:59:33,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:59:33,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:59:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2020-10-27 14:59:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 14:59:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-27 14:59:33,909 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 36 [2020-10-27 14:59:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:33,909 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-27 14:59:33,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:59:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-27 14:59:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:59:33,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:33,912 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, 1, 1] [2020-10-27 14:59:33,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:59:33,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:33,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:33,912 INFO L82 PathProgramCache]: Analyzing trace with hash -735114094, now seen corresponding path program 1 times [2020-10-27 14:59:33,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:33,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842835355] [2020-10-27 14:59:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:33,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:34,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:34,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:59:34,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-27 14:59:34,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:59:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:59:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:59:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:34,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:34,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:34,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:34,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:34,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:34,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:34,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:34,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:34,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:34,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:34,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:34,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:34,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:34,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:59:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:34,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:34,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:34,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:34,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:34,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:34,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:34,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:34,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:34,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:34,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842835355] [2020-10-27 14:59:34,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:34,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:59:34,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939735115] [2020-10-27 14:59:34,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:59:34,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:34,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:59:34,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:59:34,473 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 11 states. [2020-10-27 14:59:34,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:34,935 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-10-27 14:59:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:59:34,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-27 14:59:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:34,937 INFO L225 Difference]: With dead ends: 74 [2020-10-27 14:59:34,937 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 14:59:34,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:59:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 14:59:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48. [2020-10-27 14:59:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 14:59:34,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-27 14:59:34,947 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 36 [2020-10-27 14:59:34,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:34,948 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-27 14:59:34,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:59:34,948 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-27 14:59:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:59:34,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:34,950 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, 1, 1] [2020-10-27 14:59:34,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:59:34,950 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:34,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:34,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1048684543, now seen corresponding path program 2 times [2020-10-27 14:59:34,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:34,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862290351] [2020-10-27 14:59:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:36,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:59:36,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:59:36,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-10-27 14:59:36,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:59:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:59:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:59:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:36,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:36,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:36,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:59:36,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:36,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:36,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:36,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:36,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:59:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:59:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:59:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:59:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:36,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:36,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:36,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:59:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:36,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:36,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:36,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:36,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:59:36,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862290351] [2020-10-27 14:59:36,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:36,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:59:36,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187118386] [2020-10-27 14:59:36,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:59:36,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:36,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:59:36,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:59:36,469 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 12 states. [2020-10-27 14:59:37,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:37,290 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-10-27 14:59:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:59:37,291 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-27 14:59:37,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:37,292 INFO L225 Difference]: With dead ends: 88 [2020-10-27 14:59:37,292 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 14:59:37,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:59:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 14:59:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-10-27 14:59:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 14:59:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-27 14:59:37,305 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 44 [2020-10-27 14:59:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:37,305 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-27 14:59:37,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:59:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-27 14:59:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:59:37,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:37,307 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-27 14:59:37,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:59:37,307 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1786097344, now seen corresponding path program 3 times [2020-10-27 14:59:37,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:37,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450305396] [2020-10-27 14:59:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:37,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:37,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:59:37,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-27 14:59:37,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:59:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:59:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 14:59:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:37,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:37,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:37,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:59:37,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:37,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:37,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:37,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:37,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:59:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:37,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:38,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:38,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:38,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:59:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:38,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:38,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:38,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:38,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:38,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:38,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:38,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:59:38,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450305396] [2020-10-27 14:59:38,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:38,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:59:38,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566589429] [2020-10-27 14:59:38,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:59:38,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:38,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:59:38,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:59:38,021 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 13 states. [2020-10-27 14:59:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:38,735 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2020-10-27 14:59:38,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:59:38,736 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-27 14:59:38,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:38,737 INFO L225 Difference]: With dead ends: 104 [2020-10-27 14:59:38,737 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 14:59:38,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:59:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 14:59:38,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2020-10-27 14:59:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 14:59:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2020-10-27 14:59:38,754 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 49 [2020-10-27 14:59:38,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:38,754 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2020-10-27 14:59:38,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:59:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2020-10-27 14:59:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:59:38,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:38,756 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-27 14:59:38,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:59:38,756 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:38,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1276624254, now seen corresponding path program 1 times [2020-10-27 14:59:38,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:38,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815850956] [2020-10-27 14:59:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:39,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:59:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-27 14:59:39,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:59:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:59:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 14:59:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:39,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:59:39,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:39,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:39,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:39,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:39,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:39,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:39,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:59:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:39,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:39,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:39,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:59:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:39,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:39,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:39,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:39,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:39,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:39,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:59:39,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815850956] [2020-10-27 14:59:39,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:39,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:59:39,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515088737] [2020-10-27 14:59:39,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:59:39,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:39,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:59:39,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:59:39,650 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 14 states. [2020-10-27 14:59:40,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:40,350 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2020-10-27 14:59:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:59:40,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-27 14:59:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:40,352 INFO L225 Difference]: With dead ends: 108 [2020-10-27 14:59:40,352 INFO L226 Difference]: Without dead ends: 105 [2020-10-27 14:59:40,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:59:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-27 14:59:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 61. [2020-10-27 14:59:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:59:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-10-27 14:59:40,369 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 49 [2020-10-27 14:59:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:40,370 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-10-27 14:59:40,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:59:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-10-27 14:59:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:59:40,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:40,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-27 14:59:40,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:59:40,372 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:40,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:40,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1476291987, now seen corresponding path program 4 times [2020-10-27 14:59:40,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:40,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608216382] [2020-10-27 14:59:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:59:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-27 14:59:40,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:59:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:59:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 14:59:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:41,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:41,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:41,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:41,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:41,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:41,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:59:41,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:41,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:41,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:41,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:41,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:41,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:41,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:41,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:41,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:41,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:41,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:41,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:41,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:41,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:41,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:59:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:41,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:41,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:41,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:41,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:59:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:41,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:41,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:41,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:41,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:59:41,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:41,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:59:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:41,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:41,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:41,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:41,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:59:41,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:59:41,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608216382] [2020-10-27 14:59:41,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:41,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:59:41,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606083562] [2020-10-27 14:59:41,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:59:41,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:41,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:59:41,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:59:41,285 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 13 states. [2020-10-27 14:59:42,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:42,175 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2020-10-27 14:59:42,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:59:42,177 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-27 14:59:42,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:42,178 INFO L225 Difference]: With dead ends: 110 [2020-10-27 14:59:42,178 INFO L226 Difference]: Without dead ends: 107 [2020-10-27 14:59:42,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:59:42,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-27 14:59:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2020-10-27 14:59:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:59:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-10-27 14:59:42,208 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 57 [2020-10-27 14:59:42,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:42,209 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-10-27 14:59:42,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:59:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-10-27 14:59:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:59:42,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:42,216 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-27 14:59:42,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:59:42,216 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:42,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:42,217 INFO L82 PathProgramCache]: Analyzing trace with hash 574692011, now seen corresponding path program 1 times [2020-10-27 14:59:42,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:42,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705441290] [2020-10-27 14:59:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:42,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:42,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:59:42,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-27 14:59:42,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:59:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:59:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 14:59:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:43,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:43,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:43,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:43,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:43,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:43,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:43,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:43,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:43,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:43,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:43,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:59:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:43,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:43,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:43,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:43,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:43,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:43,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:43,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:59:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:43,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:43,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:43,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:43,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:43,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:59:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:43,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:43,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:43,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:43,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:43,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:43,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:43,083 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:59:43,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705441290] [2020-10-27 14:59:43,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:43,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:59:43,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902065106] [2020-10-27 14:59:43,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:59:43,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:43,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:59:43,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:59:43,086 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 14 states. [2020-10-27 14:59:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:44,003 INFO L93 Difference]: Finished difference Result 120 states and 141 transitions. [2020-10-27 14:59:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:59:44,005 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-27 14:59:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:44,006 INFO L225 Difference]: With dead ends: 120 [2020-10-27 14:59:44,006 INFO L226 Difference]: Without dead ends: 117 [2020-10-27 14:59:44,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:59:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-27 14:59:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 69. [2020-10-27 14:59:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 14:59:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-10-27 14:59:44,030 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 57 [2020-10-27 14:59:44,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:44,031 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-10-27 14:59:44,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:59:44,032 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-10-27 14:59:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 14:59:44,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:44,033 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-27 14:59:44,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:59:44,033 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:44,034 INFO L82 PathProgramCache]: Analyzing trace with hash 188315930, now seen corresponding path program 5 times [2020-10-27 14:59:44,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:44,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853552605] [2020-10-27 14:59:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:44,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:44,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:45,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 14:59:45,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:59:45,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1451 [2020-10-27 14:59:45,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:45,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:59:45,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:59:45,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:59:45,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:45,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:45,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:45,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:45,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:45,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:45,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:45,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 14:59:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:45,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:45,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:59:45,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:59:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:59:45,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:59:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:45,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:45,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:45,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:45,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:45,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:45,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:59:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:45,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:45,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:45,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:45,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:45,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:59:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:45,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:45,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:45,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:45,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:59:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:45,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:45,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:45,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:59:45,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853552605] [2020-10-27 14:59:45,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:45,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:59:45,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255109028] [2020-10-27 14:59:45,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:59:45,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:45,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:59:45,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:59:45,903 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 15 states. [2020-10-27 14:59:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:47,373 INFO L93 Difference]: Finished difference Result 181 states and 206 transitions. [2020-10-27 14:59:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:59:47,374 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-27 14:59:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:47,375 INFO L225 Difference]: With dead ends: 181 [2020-10-27 14:59:47,376 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 14:59:47,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:59:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 14:59:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2020-10-27 14:59:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:59:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2020-10-27 14:59:47,388 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 65 [2020-10-27 14:59:47,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:47,388 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2020-10-27 14:59:47,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:59:47,389 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2020-10-27 14:59:47,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:59:47,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:47,390 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:47,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:59:47,390 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:47,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:47,391 INFO L82 PathProgramCache]: Analyzing trace with hash -473352651, now seen corresponding path program 1 times [2020-10-27 14:59:47,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:47,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736360333] [2020-10-27 14:59:47,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:47,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:52,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:59:52,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:59:52,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 14:59:52,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:59:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:59:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 14:59:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:52,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:52,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:52,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:59:52,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:52,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:52,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:59:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:52,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:52,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:52,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:59:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:52,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:52,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:52,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:52,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:52,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:52,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:52,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:59:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:52,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:52,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:52,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:52,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:59:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:52,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:52,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:52,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:52,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:59:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:52,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:52,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-27 14:59:52,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736360333] [2020-10-27 14:59:52,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:52,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:59:52,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250977711] [2020-10-27 14:59:52,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:59:52,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:52,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:59:52,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:59:52,634 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 9 states. [2020-10-27 14:59:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:53,055 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2020-10-27 14:59:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:59:53,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-27 14:59:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:53,057 INFO L225 Difference]: With dead ends: 156 [2020-10-27 14:59:53,057 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:59:53,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:59:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:59:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2020-10-27 14:59:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 14:59:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-10-27 14:59:53,073 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 76 [2020-10-27 14:59:53,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:53,073 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-10-27 14:59:53,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:59:53,074 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-10-27 14:59:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 14:59:53,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:53,075 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:53,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:59:53,075 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:53,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1479823693, now seen corresponding path program 2 times [2020-10-27 14:59:53,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:53,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919757947] [2020-10-27 14:59:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 14:59:58,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 14:59:58,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:59:58,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:59:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:59:58,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:59:58,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:58,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:58,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:58,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:58,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:58,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:58,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 14:59:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:58,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:58,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:58,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:59:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:58,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:58,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:58,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:58,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:58,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:58,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:59:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:58,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:58,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:58,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:58,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:59:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:58,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:58,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:59:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:58,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:58,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 26 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-27 14:59:58,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919757947] [2020-10-27 14:59:58,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:58,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:59:58,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840696992] [2020-10-27 14:59:58,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:59:58,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:59:58,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:59:58,352 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 12 states. [2020-10-27 14:59:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:58,788 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2020-10-27 14:59:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:59:58,788 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-10-27 14:59:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:58,790 INFO L225 Difference]: With dead ends: 151 [2020-10-27 14:59:58,790 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:59:58,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:59:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:59:58,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-27 14:59:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 14:59:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2020-10-27 14:59:58,806 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 78 [2020-10-27 14:59:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:58,807 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2020-10-27 14:59:58,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:59:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2020-10-27 14:59:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:59:58,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:58,808 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:58,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:59:58,808 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:58,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:58,809 INFO L82 PathProgramCache]: Analyzing trace with hash 168298799, now seen corresponding path program 3 times [2020-10-27 14:59:58,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:58,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198234571] [2020-10-27 14:59:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:03,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 15:00:03,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 15:00:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 15:00:03,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:00:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:00:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 15:00:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:04,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:04,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:04,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:04,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:04,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:04,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:04,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 15:00:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:04,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:04,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:04,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:00:04,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:04,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 15:00:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:04,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:04,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:04,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:00:04,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:04,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:00:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:04,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:04,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:04,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:00:04,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:00:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:04,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:04,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:04,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:04,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 15:00:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:04,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:04,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:04,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 15:00:04,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198234571] [2020-10-27 15:00:04,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:04,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 15:00:04,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009854939] [2020-10-27 15:00:04,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 15:00:04,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:04,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 15:00:04,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:00:04,257 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand 16 states. [2020-10-27 15:00:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:05,580 INFO L93 Difference]: Finished difference Result 171 states and 206 transitions. [2020-10-27 15:00:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 15:00:05,581 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-10-27 15:00:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:05,583 INFO L225 Difference]: With dead ends: 171 [2020-10-27 15:00:05,583 INFO L226 Difference]: Without dead ends: 168 [2020-10-27 15:00:05,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 15:00:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-27 15:00:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 114. [2020-10-27 15:00:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 15:00:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-10-27 15:00:05,603 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 82 [2020-10-27 15:00:05,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:05,604 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-10-27 15:00:05,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 15:00:05,604 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-10-27 15:00:05,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 15:00:05,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:05,605 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 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] [2020-10-27 15:00:05,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:00:05,606 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:05,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:05,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1881089043, now seen corresponding path program 1 times [2020-10-27 15:00:05,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:05,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229934922] [2020-10-27 15:00:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:10,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:10,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 15:00:10,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:00:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 15:00:10,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 15:00:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:00:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 15:00:10,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:11,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:11,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:11,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:11,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:00:11,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 15:00:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:11,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:11,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:11,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:11,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:11,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:11,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 15:00:11,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 15:00:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:11,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:11,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:11,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:00:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:11,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:11,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:11,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:00:11,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:00:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:11,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:11,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:11,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:11,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:11,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:11,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:00:11,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 15:00:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:11,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:11,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:11,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 15:00:11,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229934922] [2020-10-27 15:00:11,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:11,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:00:11,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386709176] [2020-10-27 15:00:11,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:00:11,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:11,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:00:11,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:00:11,099 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 17 states. [2020-10-27 15:00:12,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:12,451 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2020-10-27 15:00:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 15:00:12,452 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-27 15:00:12,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:12,453 INFO L225 Difference]: With dead ends: 175 [2020-10-27 15:00:12,453 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 15:00:12,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 15:00:12,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 15:00:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 93. [2020-10-27 15:00:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 15:00:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-10-27 15:00:12,469 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 82 [2020-10-27 15:00:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:12,470 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-10-27 15:00:12,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:00:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-10-27 15:00:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 15:00:12,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:12,471 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:12,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 15:00:12,471 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash -297398820, now seen corresponding path program 4 times [2020-10-27 15:00:12,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:12,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410884454] [2020-10-27 15:00:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:12,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:17,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:17,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 15:00:17,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:00:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 15:00:17,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:00:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:00:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:00:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:17,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:17,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:17,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:17,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:17,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:17,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:17,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:17,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:17,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:17,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:17,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 15:00:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:17,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:17,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:17,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:17,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:17,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:17,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:17,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:17,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:17,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 15:00:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:17,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:17,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:17,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:17,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:00:17,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:17,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:00:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:17,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:17,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:17,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:17,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:17,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:17,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:00:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:17,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:17,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:17,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:17,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:17,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:17,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 15:00:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:17,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:17,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:17,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:17,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:17,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:17,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 15:00:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:17,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:17,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:17,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:17,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 15:00:17,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410884454] [2020-10-27 15:00:17,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:17,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 15:00:17,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487730197] [2020-10-27 15:00:17,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 15:00:17,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:17,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 15:00:17,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:00:17,881 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 16 states. [2020-10-27 15:00:19,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:19,469 INFO L93 Difference]: Finished difference Result 183 states and 219 transitions. [2020-10-27 15:00:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 15:00:19,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-10-27 15:00:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:19,471 INFO L225 Difference]: With dead ends: 183 [2020-10-27 15:00:19,471 INFO L226 Difference]: Without dead ends: 180 [2020-10-27 15:00:19,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 15:00:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-27 15:00:19,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 128. [2020-10-27 15:00:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 15:00:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 146 transitions. [2020-10-27 15:00:19,492 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 146 transitions. Word has length 90 [2020-10-27 15:00:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:19,493 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 146 transitions. [2020-10-27 15:00:19,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 15:00:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 146 transitions. [2020-10-27 15:00:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 15:00:19,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:19,494 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 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] [2020-10-27 15:00:19,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 15:00:19,495 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:19,495 INFO L82 PathProgramCache]: Analyzing trace with hash -778479078, now seen corresponding path program 1 times [2020-10-27 15:00:19,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:19,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718810971] [2020-10-27 15:00:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:19,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:19,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:23,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 15:00:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:00:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3991 [2020-10-27 15:00:23,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 15:00:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:00:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:00:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:23,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:23,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:23,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:23,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:23,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:23,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:23,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:23,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:23,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 15:00:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:23,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:23,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:23,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 15:00:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:23,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:23,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:23,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:23,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:23,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:00:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:23,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:00:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:23,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:23,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:23,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:23,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:23,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 15:00:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:23,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:23,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:23,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:23,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 15:00:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:23,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:23,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:23,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:23,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:23,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:23,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 15:00:23,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718810971] [2020-10-27 15:00:23,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:23,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:00:23,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878882408] [2020-10-27 15:00:23,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:00:23,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:23,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:00:23,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:00:23,898 INFO L87 Difference]: Start difference. First operand 128 states and 146 transitions. Second operand 17 states. [2020-10-27 15:00:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:25,552 INFO L93 Difference]: Finished difference Result 199 states and 240 transitions. [2020-10-27 15:00:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 15:00:25,553 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 90 [2020-10-27 15:00:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:25,555 INFO L225 Difference]: With dead ends: 199 [2020-10-27 15:00:25,555 INFO L226 Difference]: Without dead ends: 196 [2020-10-27 15:00:25,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=1461, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 15:00:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-27 15:00:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 101. [2020-10-27 15:00:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 15:00:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-10-27 15:00:25,572 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 90 [2020-10-27 15:00:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:25,572 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-10-27 15:00:25,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:00:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-10-27 15:00:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 15:00:25,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:25,574 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:25,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 15:00:25,574 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:25,575 INFO L82 PathProgramCache]: Analyzing trace with hash -125889143, now seen corresponding path program 5 times [2020-10-27 15:00:25,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:25,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138294076] [2020-10-27 15:00:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:30,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:30,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 15:00:30,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:00:30,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 15:00:30,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:30,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 15:00:30,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 15:00:30,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 15:00:30,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:30,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:30,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:30,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:30,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:30,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:30,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:30,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 15:00:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:30,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:30,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:30,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:30,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:00:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:00:30,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:30,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 15:00:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:30,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:30,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:30,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:30,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:30,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:30,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:30,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:30,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:00:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:30,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:30,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:30,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:30,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:30,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:30,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:30,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:00:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:30,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:30,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:30,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:30,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:30,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:30,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:30,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 15:00:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:30,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:30,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:30,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:30,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:30,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:30,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:30,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 15:00:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:30,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:30,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:30,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:30,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:31,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 15:00:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:31,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:31,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:31,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:31,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 84 proven. 18 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 15:00:31,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138294076] [2020-10-27 15:00:31,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:31,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 15:00:31,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261451977] [2020-10-27 15:00:31,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 15:00:31,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:31,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 15:00:31,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-27 15:00:31,033 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 18 states. [2020-10-27 15:00:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:32,210 INFO L93 Difference]: Finished difference Result 171 states and 184 transitions. [2020-10-27 15:00:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 15:00:32,211 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2020-10-27 15:00:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:32,213 INFO L225 Difference]: With dead ends: 171 [2020-10-27 15:00:32,213 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 15:00:32,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 15:00:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 15:00:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2020-10-27 15:00:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 15:00:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2020-10-27 15:00:32,230 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 98 [2020-10-27 15:00:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:32,230 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2020-10-27 15:00:32,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 15:00:32,230 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2020-10-27 15:00:32,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 15:00:32,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:32,231 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:32,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 15:00:32,232 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:32,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:32,232 INFO L82 PathProgramCache]: Analyzing trace with hash 762204960, now seen corresponding path program 6 times [2020-10-27 15:00:32,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:32,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348630289] [2020-10-27 15:00:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:32,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:32,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:32,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:33,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:33,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:34,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:34,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:34,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:36,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:36,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 15:00:37,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-27 15:00:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 15:00:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 15:00:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:00:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 15:00:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:37,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:37,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 15:00:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:37,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:37,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 15:00:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 15:00:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 15:00:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:37,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 15:00:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:37,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 15:00:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:37,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 15:00:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:37,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 12 proven. 106 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 15:00:37,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348630289] [2020-10-27 15:00:37,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:37,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 15:00:37,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77130920] [2020-10-27 15:00:37,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 15:00:37,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:37,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 15:00:37,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:00:37,697 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand 19 states. [2020-10-27 15:00:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:40,377 INFO L93 Difference]: Finished difference Result 265 states and 329 transitions. [2020-10-27 15:00:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 15:00:40,378 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 103 [2020-10-27 15:00:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:40,381 INFO L225 Difference]: With dead ends: 265 [2020-10-27 15:00:40,381 INFO L226 Difference]: Without dead ends: 262 [2020-10-27 15:00:40,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=345, Invalid=3077, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 15:00:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-27 15:00:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 143. [2020-10-27 15:00:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-27 15:00:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2020-10-27 15:00:40,407 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 103 [2020-10-27 15:00:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:40,407 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2020-10-27 15:00:40,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 15:00:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2020-10-27 15:00:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 15:00:40,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:40,409 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:40,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 15:00:40,409 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:40,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash 964028894, now seen corresponding path program 2 times [2020-10-27 15:00:40,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:40,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915375261] [2020-10-27 15:00:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 15:00:45,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 15:00:45,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 15:00:45,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 15:00:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:00:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 15:00:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:45,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:45,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:45,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:45,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 15:00:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:45,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:45,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:45,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:45,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 15:00:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 15:00:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:45,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:45,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 15:00:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:45,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:45,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:45,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 15:00:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:45,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:45,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:45,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 15:00:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:45,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:45,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 15:00:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:45,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:45,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 12 proven. 106 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 15:00:45,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915375261] [2020-10-27 15:00:45,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:45,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 15:00:45,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357820494] [2020-10-27 15:00:45,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 15:00:45,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:45,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 15:00:45,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-27 15:00:45,923 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand 20 states. [2020-10-27 15:00:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:48,414 INFO L93 Difference]: Finished difference Result 275 states and 341 transitions. [2020-10-27 15:00:48,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 15:00:48,415 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2020-10-27 15:00:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:48,417 INFO L225 Difference]: With dead ends: 275 [2020-10-27 15:00:48,417 INFO L226 Difference]: Without dead ends: 272 [2020-10-27 15:00:48,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=321, Invalid=2985, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 15:00:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-27 15:00:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 114. [2020-10-27 15:00:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 15:00:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-10-27 15:00:48,437 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 103 [2020-10-27 15:00:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:48,438 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-10-27 15:00:48,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 15:00:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-10-27 15:00:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 15:00:48,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:48,439 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:48,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 15:00:48,439 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:48,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1673516749, now seen corresponding path program 7 times [2020-10-27 15:00:48,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:48,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089057481] [2020-10-27 15:00:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:48,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:49,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:49,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:49,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:50,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 15:00:53,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 15:00:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 15:00:53,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 15:00:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 15:00:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 15:00:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:53,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:53,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:53,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 15:00:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:53,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:53,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 15:00:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:53,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:53,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 15:00:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:53,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:53,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:53,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 15:00:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:53,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:53,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:53,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 15:00:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:53,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 15:00:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:53,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:53,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:53,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:53,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 15:00:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:53,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:53,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 15:00:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:53,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:00:53,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:53,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-27 15:00:53,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089057481] [2020-10-27 15:00:53,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:53,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 15:00:53,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481869290] [2020-10-27 15:00:53,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 15:00:53,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:53,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 15:00:53,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:00:53,790 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 19 states. [2020-10-27 15:00:55,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:55,149 INFO L93 Difference]: Finished difference Result 285 states and 324 transitions. [2020-10-27 15:00:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 15:00:55,153 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-10-27 15:00:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:55,154 INFO L225 Difference]: With dead ends: 285 [2020-10-27 15:00:55,154 INFO L226 Difference]: Without dead ends: 137 [2020-10-27 15:00:55,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=438, Invalid=1044, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 15:00:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-27 15:00:55,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 118. [2020-10-27 15:00:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 15:00:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2020-10-27 15:00:55,171 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 111 [2020-10-27 15:00:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:55,171 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2020-10-27 15:00:55,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 15:00:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2020-10-27 15:00:55,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 15:00:55,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:55,172 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:55,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 15:00:55,172 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:55,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:55,173 INFO L82 PathProgramCache]: Analyzing trace with hash -10896431, now seen corresponding path program 8 times [2020-10-27 15:00:55,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:55,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948309055] [2020-10-27 15:00:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 15:01:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:01:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 15:01:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 15:01:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 15:01:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 15:01:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:00,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:00,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:00,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:01:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:00,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:00,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 15:01:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:00,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:00,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 15:01:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:00,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:00,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 15:01:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:00,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:00,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 15:01:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:00,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:00,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 15:01:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:00,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:00,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 15:01:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:00,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:00,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 15:01:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:00,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:00,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-27 15:01:00,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948309055] [2020-10-27 15:01:00,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:00,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 15:01:00,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557795139] [2020-10-27 15:01:00,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 15:01:00,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:00,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 15:01:00,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:01:00,662 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand 19 states. [2020-10-27 15:01:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:03,735 INFO L93 Difference]: Finished difference Result 287 states and 355 transitions. [2020-10-27 15:01:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 15:01:03,736 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 115 [2020-10-27 15:01:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:03,739 INFO L225 Difference]: With dead ends: 287 [2020-10-27 15:01:03,739 INFO L226 Difference]: Without dead ends: 284 [2020-10-27 15:01:03,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=360, Invalid=3422, Unknown=0, NotChecked=0, Total=3782 [2020-10-27 15:01:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-27 15:01:03,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 161. [2020-10-27 15:01:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-27 15:01:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 183 transitions. [2020-10-27 15:01:03,763 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 183 transitions. Word has length 115 [2020-10-27 15:01:03,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:03,763 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 183 transitions. [2020-10-27 15:01:03,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 15:01:03,763 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 183 transitions. [2020-10-27 15:01:03,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 15:01:03,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:03,765 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:03,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 15:01:03,765 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:03,766 INFO L82 PathProgramCache]: Analyzing trace with hash -742863857, now seen corresponding path program 2 times [2020-10-27 15:01:03,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:03,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714542037] [2020-10-27 15:01:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:08,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:08,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 15:01:08,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:01:08,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 15:01:08,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:08,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 15:01:08,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 15:01:08,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 15:01:08,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:09,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:09,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:09,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:09,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:01:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:09,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:09,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:09,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:09,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 15:01:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:09,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:09,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:09,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 15:01:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:09,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:09,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:09,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:09,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:09,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 15:01:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:09,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:09,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:09,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:09,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:09,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:09,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 15:01:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:09,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:09,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:09,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 15:01:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:09,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:09,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:09,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:09,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 15:01:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:09,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:09,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:09,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:09,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:09,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 15:01:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:09,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:09,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:09,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-27 15:01:09,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714542037] [2020-10-27 15:01:09,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:09,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 15:01:09,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080263941] [2020-10-27 15:01:09,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 15:01:09,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:09,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 15:01:09,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-27 15:01:09,277 INFO L87 Difference]: Start difference. First operand 161 states and 183 transitions. Second operand 20 states. [2020-10-27 15:01:12,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:12,574 INFO L93 Difference]: Finished difference Result 315 states and 394 transitions. [2020-10-27 15:01:12,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-27 15:01:12,575 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 115 [2020-10-27 15:01:12,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:12,578 INFO L225 Difference]: With dead ends: 315 [2020-10-27 15:01:12,578 INFO L226 Difference]: Without dead ends: 312 [2020-10-27 15:01:12,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=421, Invalid=4271, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 15:01:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-27 15:01:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 126. [2020-10-27 15:01:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 15:01:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2020-10-27 15:01:12,607 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 115 [2020-10-27 15:01:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:12,608 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2020-10-27 15:01:12,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 15:01:12,608 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2020-10-27 15:01:12,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 15:01:12,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:12,609 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:12,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 15:01:12,611 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:12,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1796472446, now seen corresponding path program 9 times [2020-10-27 15:01:12,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:12,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092033465] [2020-10-27 15:01:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:17,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 15:01:17,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:01:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 15:01:17,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 15:01:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 15:01:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 15:01:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:18,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:18,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:01:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:18,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:01:18,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:01:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 15:01:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:18,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:18,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 15:01:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:18,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:18,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 15:01:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:18,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:18,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 15:01:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:18,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:18,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 15:01:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:18,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:18,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 15:01:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:18,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:18,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 15:01:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:18,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:18,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:18,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:18,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 15:01:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:18,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:18,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:18,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:18,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:18,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 144 proven. 34 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-10-27 15:01:18,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092033465] [2020-10-27 15:01:18,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:18,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 15:01:18,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122802754] [2020-10-27 15:01:18,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 15:01:18,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:18,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 15:01:18,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-10-27 15:01:18,300 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand 21 states. [2020-10-27 15:01:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:19,847 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2020-10-27 15:01:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 15:01:19,848 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 123 [2020-10-27 15:01:19,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:19,850 INFO L225 Difference]: With dead ends: 212 [2020-10-27 15:01:19,850 INFO L226 Difference]: Without dead ends: 135 [2020-10-27 15:01:19,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=308, Invalid=1414, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 15:01:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-27 15:01:19,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2020-10-27 15:01:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 15:01:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 143 transitions. [2020-10-27 15:01:19,869 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 143 transitions. Word has length 123 [2020-10-27 15:01:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:19,870 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 143 transitions. [2020-10-27 15:01:19,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 15:01:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 143 transitions. [2020-10-27 15:01:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 15:01:19,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:19,871 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:19,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 15:01:19,871 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:19,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1589687743, now seen corresponding path program 10 times [2020-10-27 15:01:19,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:19,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069114269] [2020-10-27 15:01:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:21,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:22,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 15:01:24,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 15:01:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 15:01:24,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 15:01:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 15:01:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 15:01:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:25,826 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-10-27 15:01:26,032 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-10-27 15:01:26,220 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-10-27 15:01:26,417 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-10-27 15:01:27,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:27,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:27,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:01:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:27,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:27,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 15:01:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:27,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 15:01:27,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:01:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:27,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 15:01:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:27,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 15:01:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:01:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 15:01:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:27,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 15:01:27,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:01:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:27,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 15:01:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:27,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 15:01:27,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:01:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 15:01:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:27,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 15:01:27,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:01:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 15:01:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:27,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 15:01:27,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:01:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 15:01:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:27,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 15:01:27,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:01:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:27,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 15:01:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:27,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:27,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:27,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:27,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 15:01:27,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:27,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:27,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:01:27,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 16 proven. 119 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-27 15:01:27,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069114269] [2020-10-27 15:01:27,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:27,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 15:01:27,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51977194] [2020-10-27 15:01:27,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 15:01:27,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:27,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 15:01:27,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2020-10-27 15:01:27,138 INFO L87 Difference]: Start difference. First operand 131 states and 143 transitions. Second operand 26 states. [2020-10-27 15:01:28,143 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-27 15:01:28,375 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-27 15:01:29,068 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-27 15:01:29,358 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-27 15:01:29,737 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-27 15:01:30,027 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-27 15:01:30,342 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-10-27 15:01:30,495 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-27 15:01:30,725 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-27 15:01:31,011 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-27 15:01:31,460 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-10-27 15:01:31,748 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-10-27 15:01:32,426 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-27 15:01:32,752 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-27 15:01:33,646 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-27 15:01:33,884 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-27 15:01:34,332 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-10-27 15:01:34,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:34,408 INFO L93 Difference]: Finished difference Result 357 states and 422 transitions. [2020-10-27 15:01:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 15:01:34,408 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 128 [2020-10-27 15:01:34,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:34,411 INFO L225 Difference]: With dead ends: 357 [2020-10-27 15:01:34,411 INFO L226 Difference]: Without dead ends: 283 [2020-10-27 15:01:34,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=816, Invalid=3344, Unknown=0, NotChecked=0, Total=4160 [2020-10-27 15:01:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-27 15:01:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 176. [2020-10-27 15:01:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-27 15:01:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 206 transitions. [2020-10-27 15:01:34,444 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 206 transitions. Word has length 128 [2020-10-27 15:01:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:34,444 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 206 transitions. [2020-10-27 15:01:34,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 15:01:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 206 transitions. [2020-10-27 15:01:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 15:01:34,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:34,446 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:34,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 15:01:34,446 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:34,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:34,446 INFO L82 PathProgramCache]: Analyzing trace with hash -640353989, now seen corresponding path program 11 times [2020-10-27 15:01:34,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:34,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677486828] [2020-10-27 15:01:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:34,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:37,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:39,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:39,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 15:01:39,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 15:01:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 15:01:39,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:01:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:01:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 15:01:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:40,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:01:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:40,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:40,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 15:01:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:40,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:40,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:40,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:40,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 15:01:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:40,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:40,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 15:01:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:40,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:40,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 15:01:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:40,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:40,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:40,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 15:01:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:40,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:40,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 15:01:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:40,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:40,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:40,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:40,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 15:01:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:40,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:40,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 15:01:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:40,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:40,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:40,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:40,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 16 proven. 183 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-27 15:01:40,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677486828] [2020-10-27 15:01:40,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:40,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 15:01:40,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743245251] [2020-10-27 15:01:40,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 15:01:40,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:40,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 15:01:40,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-27 15:01:40,233 INFO L87 Difference]: Start difference. First operand 176 states and 206 transitions. Second operand 22 states. [2020-10-27 15:01:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:45,825 INFO L93 Difference]: Finished difference Result 1016 states and 1340 transitions. [2020-10-27 15:01:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-27 15:01:45,826 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 132 [2020-10-27 15:01:45,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:45,832 INFO L225 Difference]: With dead ends: 1016 [2020-10-27 15:01:45,832 INFO L226 Difference]: Without dead ends: 1013 [2020-10-27 15:01:45,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3345 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=906, Invalid=9600, Unknown=0, NotChecked=0, Total=10506 [2020-10-27 15:01:45,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-27 15:01:45,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 269. [2020-10-27 15:01:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-27 15:01:45,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 330 transitions. [2020-10-27 15:01:45,891 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 330 transitions. Word has length 132 [2020-10-27 15:01:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:45,891 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 330 transitions. [2020-10-27 15:01:45,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 15:01:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 330 transitions. [2020-10-27 15:01:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 15:01:45,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:45,893 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:45,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 15:01:45,894 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:45,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:45,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1577276409, now seen corresponding path program 3 times [2020-10-27 15:01:45,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:45,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160899631] [2020-10-27 15:01:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:47,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 15:01:50,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:01:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 15:01:50,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 15:01:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:01:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 15:01:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:51,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:51,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:01:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 15:01:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:51,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:51,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:51,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 15:01:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:51,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:51,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 15:01:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:51,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:51,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:51,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 15:01:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:51,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:51,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 15:01:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:51,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:51,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 15:01:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:51,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:51,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 15:01:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:51,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:51,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 15:01:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:51,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:51,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:51,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:01:51,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:51,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 16 proven. 183 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-27 15:01:51,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160899631] [2020-10-27 15:01:51,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:51,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 15:01:51,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293723545] [2020-10-27 15:01:51,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 15:01:51,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:51,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 15:01:51,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-27 15:01:51,573 INFO L87 Difference]: Start difference. First operand 269 states and 330 transitions. Second operand 23 states. [2020-10-27 15:01:56,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:56,709 INFO L93 Difference]: Finished difference Result 1058 states and 1398 transitions. [2020-10-27 15:01:56,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-27 15:01:56,710 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 132 [2020-10-27 15:01:56,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:56,716 INFO L225 Difference]: With dead ends: 1058 [2020-10-27 15:01:56,717 INFO L226 Difference]: Without dead ends: 1055 [2020-10-27 15:01:56,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2908 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=776, Invalid=8730, Unknown=0, NotChecked=0, Total=9506 [2020-10-27 15:01:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-10-27 15:01:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 184. [2020-10-27 15:01:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-27 15:01:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 214 transitions. [2020-10-27 15:01:56,759 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 214 transitions. Word has length 132 [2020-10-27 15:01:56,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:56,760 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 214 transitions. [2020-10-27 15:01:56,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 15:01:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 214 transitions. [2020-10-27 15:01:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 15:01:56,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:56,761 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:56,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 15:01:56,762 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:56,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1297625576, now seen corresponding path program 12 times [2020-10-27 15:01:56,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:56,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066069047] [2020-10-27 15:01:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:56,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:01,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:01,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:01,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 15:02:01,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:02:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 15:02:01,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:02:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:02:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:02:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:02,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:02:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:02,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 15:02:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:02,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 15:02:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 15:02:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:02,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 15:02:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 15:02:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:02,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 15:02:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:02,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 15:02:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:02,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 15:02:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 15:02:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:02,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:02,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:02,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 18 proven. 217 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-27 15:02:02,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066069047] [2020-10-27 15:02:02,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:02,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 15:02:02,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786822648] [2020-10-27 15:02:02,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 15:02:02,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:02,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 15:02:02,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-27 15:02:02,498 INFO L87 Difference]: Start difference. First operand 184 states and 214 transitions. Second operand 22 states. [2020-10-27 15:02:09,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:09,084 INFO L93 Difference]: Finished difference Result 1064 states and 1404 transitions. [2020-10-27 15:02:09,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-10-27 15:02:09,085 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-27 15:02:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:09,091 INFO L225 Difference]: With dead ends: 1064 [2020-10-27 15:02:09,091 INFO L226 Difference]: Without dead ends: 1061 [2020-10-27 15:02:09,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3630 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=938, Invalid=10618, Unknown=0, NotChecked=0, Total=11556 [2020-10-27 15:02:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-10-27 15:02:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 285. [2020-10-27 15:02:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-10-27 15:02:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 349 transitions. [2020-10-27 15:02:09,160 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 349 transitions. Word has length 140 [2020-10-27 15:02:09,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:09,160 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 349 transitions. [2020-10-27 15:02:09,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 15:02:09,160 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 349 transitions. [2020-10-27 15:02:09,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 15:02:09,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:09,162 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:09,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 15:02:09,162 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:09,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:09,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1430583770, now seen corresponding path program 3 times [2020-10-27 15:02:09,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:09,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34503325] [2020-10-27 15:02:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:09,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:10,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 15:02:14,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:02:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 15:02:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 15:02:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:02:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:02:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:14,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:14,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:14,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:14,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:02:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 15:02:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:14,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:14,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 15:02:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 15:02:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 15:02:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 15:02:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 15:02:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:14,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 15:02:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 15:02:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:14,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 15:02:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:14,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:14,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:14,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 18 proven. 217 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-27 15:02:14,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34503325] [2020-10-27 15:02:14,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:14,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 15:02:14,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981679495] [2020-10-27 15:02:14,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 15:02:14,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:14,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 15:02:14,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-27 15:02:14,910 INFO L87 Difference]: Start difference. First operand 285 states and 349 transitions. Second operand 23 states. [2020-10-27 15:02:22,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:22,147 INFO L93 Difference]: Finished difference Result 1216 states and 1623 transitions. [2020-10-27 15:02:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2020-10-27 15:02:22,150 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 140 [2020-10-27 15:02:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:22,156 INFO L225 Difference]: With dead ends: 1216 [2020-10-27 15:02:22,156 INFO L226 Difference]: Without dead ends: 1213 [2020-10-27 15:02:22,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4649 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1064, Invalid=13216, Unknown=0, NotChecked=0, Total=14280 [2020-10-27 15:02:22,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-10-27 15:02:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 192. [2020-10-27 15:02:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-27 15:02:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 222 transitions. [2020-10-27 15:02:22,202 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 222 transitions. Word has length 140 [2020-10-27 15:02:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:22,203 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 222 transitions. [2020-10-27 15:02:22,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 15:02:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 222 transitions. [2020-10-27 15:02:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 15:02:22,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:22,204 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:22,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 15:02:22,204 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1201508971, now seen corresponding path program 13 times [2020-10-27 15:02:22,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:22,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268131600] [2020-10-27 15:02:22,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:22,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:22,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:27,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:27,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 15:02:27,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:27,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 15:02:27,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 15:02:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 15:02:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 15:02:27,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:28,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:28,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:28,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:02:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:02:28,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:02:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 15:02:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:28,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 15:02:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 15:02:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 15:02:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 15:02:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 15:02:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 15:02:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 15:02:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:28,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 15:02:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 15:02:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:28,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:28,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 220 proven. 55 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-10-27 15:02:28,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268131600] [2020-10-27 15:02:28,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:28,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 15:02:28,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083728151] [2020-10-27 15:02:28,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 15:02:28,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:28,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 15:02:28,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-10-27 15:02:28,879 INFO L87 Difference]: Start difference. First operand 192 states and 222 transitions. Second operand 24 states. [2020-10-27 15:02:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:30,787 INFO L93 Difference]: Finished difference Result 342 states and 395 transitions. [2020-10-27 15:02:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 15:02:30,788 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 148 [2020-10-27 15:02:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:30,790 INFO L225 Difference]: With dead ends: 342 [2020-10-27 15:02:30,790 INFO L226 Difference]: Without dead ends: 249 [2020-10-27 15:02:30,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 15:02:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-27 15:02:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 194. [2020-10-27 15:02:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 15:02:30,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 225 transitions. [2020-10-27 15:02:30,835 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 225 transitions. Word has length 148 [2020-10-27 15:02:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:30,836 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 225 transitions. [2020-10-27 15:02:30,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 15:02:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 225 transitions. [2020-10-27 15:02:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 15:02:30,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:30,837 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:30,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 15:02:30,837 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:30,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:30,839 INFO L82 PathProgramCache]: Analyzing trace with hash -846523014, now seen corresponding path program 4 times [2020-10-27 15:02:30,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:30,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779130278] [2020-10-27 15:02:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:31,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:31,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:32,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:33,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:35,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:35,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 15:02:35,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 15:02:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 15:02:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 15:02:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 15:02:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 15:02:35,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:36,679 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-27 15:02:36,849 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-27 15:02:37,009 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 28 [2020-10-27 15:02:37,213 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-27 15:02:37,467 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-27 15:02:37,639 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 30 [2020-10-27 15:02:37,857 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-27 15:02:38,066 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-10-27 15:02:38,248 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-10-27 15:02:39,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:39,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:39,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:02:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:39,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:39,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 15:02:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 15:02:39,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 15:02:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:39,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 15:02:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:39,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 15:02:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 15:02:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 15:02:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:39,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 15:02:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:39,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 15:02:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:39,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-27 15:02:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:39,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 15:02:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:39,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:02:39,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:39,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:39,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 15:02:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:39,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 20 proven. 145 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-27 15:02:39,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779130278] [2020-10-27 15:02:39,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:39,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 15:02:39,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205443346] [2020-10-27 15:02:39,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 15:02:39,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:39,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 15:02:39,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 15:02:39,661 INFO L87 Difference]: Start difference. First operand 194 states and 225 transitions. Second operand 33 states. [2020-10-27 15:02:40,229 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-27 15:02:41,863 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-27 15:02:42,032 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2020-10-27 15:02:42,345 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-27 15:02:42,609 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 34 [2020-10-27 15:02:42,881 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-10-27 15:02:43,037 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-10-27 15:02:43,236 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-10-27 15:02:43,861 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-10-27 15:02:44,255 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 39 [2020-10-27 15:02:44,728 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2020-10-27 15:02:44,898 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-27 15:02:45,091 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 28 [2020-10-27 15:02:45,313 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-10-27 15:02:45,506 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-10-27 15:02:45,818 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-27 15:02:46,096 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 39 [2020-10-27 15:02:46,576 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2020-10-27 15:02:46,782 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-27 15:02:47,361 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 35 [2020-10-27 15:02:48,004 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-10-27 15:02:48,422 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-27 15:02:48,737 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 45 [2020-10-27 15:02:48,906 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2020-10-27 15:02:49,270 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-10-27 15:02:49,532 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-27 15:02:49,748 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-10-27 15:02:50,032 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2020-10-27 15:02:50,272 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-10-27 15:02:50,599 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2020-10-27 15:02:50,896 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-27 15:02:51,304 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2020-10-27 15:02:51,510 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 32 [2020-10-27 15:02:51,831 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-27 15:02:52,294 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2020-10-27 15:02:52,596 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-10-27 15:02:52,755 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 24 [2020-10-27 15:02:52,946 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2020-10-27 15:02:53,174 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-10-27 15:02:53,882 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-10-27 15:02:54,078 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 26 [2020-10-27 15:02:54,421 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 32 [2020-10-27 15:02:54,759 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 27 [2020-10-27 15:02:54,930 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2020-10-27 15:02:55,225 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-10-27 15:02:55,484 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-27 15:02:55,795 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-27 15:02:55,970 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-10-27 15:02:56,136 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 22 [2020-10-27 15:02:56,650 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2020-10-27 15:02:57,461 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 27 [2020-10-27 15:02:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:58,671 INFO L93 Difference]: Finished difference Result 774 states and 987 transitions. [2020-10-27 15:02:58,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2020-10-27 15:02:58,672 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 149 [2020-10-27 15:02:58,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:58,675 INFO L225 Difference]: With dead ends: 774 [2020-10-27 15:02:58,675 INFO L226 Difference]: Without dead ends: 684 [2020-10-27 15:02:58,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5502 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=3216, Invalid=12284, Unknown=0, NotChecked=0, Total=15500 [2020-10-27 15:02:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-27 15:02:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 363. [2020-10-27 15:02:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-27 15:02:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 466 transitions. [2020-10-27 15:02:58,775 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 466 transitions. Word has length 149 [2020-10-27 15:02:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:58,775 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 466 transitions. [2020-10-27 15:02:58,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 15:02:58,776 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 466 transitions. [2020-10-27 15:02:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 15:02:58,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:58,778 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:58,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 15:02:58,778 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1002039926, now seen corresponding path program 1 times [2020-10-27 15:02:58,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:58,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502651162] [2020-10-27 15:02:58,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:58,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:00,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:00,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:01,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:03,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:03,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 15:03:03,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 15:03:03,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 15:03:03,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:03,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 15:03:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 15:03:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 15:03:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0