/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:02:16,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:02:16,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:02:16,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:02:16,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:02:16,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:02:16,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:02:16,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:02:16,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:02:16,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:02:16,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:02:16,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:02:16,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:02:16,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:02:16,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:02:16,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:02:16,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:02:16,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:02:16,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:02:16,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:02:16,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:02:16,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:02:16,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:02:16,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:02:16,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:02:16,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:02:16,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:02:16,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:02:16,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:02:16,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:02:16,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:02:16,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:02:16,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:02:16,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:02:16,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:02:16,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:02:16,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:02:16,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:02:16,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:02:16,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:02:16,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:02:16,991 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 [2020-09-25 02:02:17,018 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:02:17,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:02:17,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:02:17,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:02:17,020 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:02:17,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:02:17,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:02:17,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:02:17,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:02:17,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:02:17,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:02:17,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:02:17,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:02:17,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:02:17,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:02:17,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:02:17,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:02:17,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:02:17,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:02:17,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:02:17,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:02:17,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:02:17,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:02:17,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:02:17,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:02:17,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:02:17,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:02:17,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:02:17,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:02:17,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=true; [2020-09-25 02:02:17,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:02:17,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:02:17,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:02:17,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:02:17,550 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:02:17,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 02:02:17,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f11a4831/6d6f917780434ae6aaff4338f0e25446/FLAGf707813ab [2020-09-25 02:02:18,154 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:02:18,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 02:02:18,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f11a4831/6d6f917780434ae6aaff4338f0e25446/FLAGf707813ab [2020-09-25 02:02:18,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f11a4831/6d6f917780434ae6aaff4338f0e25446 [2020-09-25 02:02:18,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:02:18,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:02:18,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:02:18,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:02:18,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:02:18,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:02:18" (1/1) ... [2020-09-25 02:02:18,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18, skipping insertion in model container [2020-09-25 02:02:18,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:02:18" (1/1) ... [2020-09-25 02:02:18,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:02:18,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:02:18,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:02:18,806 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:02:18,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:02:18,850 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:02:18,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18 WrapperNode [2020-09-25 02:02:18,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:02:18,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:02:18,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:02:18,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:02:18,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18" (1/1) ... [2020-09-25 02:02:18,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18" (1/1) ... [2020-09-25 02:02:18,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18" (1/1) ... [2020-09-25 02:02:18,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18" (1/1) ... [2020-09-25 02:02:18,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18" (1/1) ... [2020-09-25 02:02:19,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18" (1/1) ... [2020-09-25 02:02:19,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18" (1/1) ... [2020-09-25 02:02:19,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:02:19,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:02:19,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:02:19,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:02:19,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18" (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 [2020-09-25 02:02:19,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:02:19,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:02:19,089 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 02:02:19,090 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 02:02:19,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:02:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:02:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:02:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 02:02:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 02:02:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:02:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:02:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:02:19,371 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:02:19,372 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:02:19,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:02:19 BoogieIcfgContainer [2020-09-25 02:02:19,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:02:19,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:02:19,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:02:19,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:02:19,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:02:18" (1/3) ... [2020-09-25 02:02:19,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:02:19, skipping insertion in model container [2020-09-25 02:02:19,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:18" (2/3) ... [2020-09-25 02:02:19,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:02:19, skipping insertion in model container [2020-09-25 02:02:19,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:02:19" (3/3) ... [2020-09-25 02:02:19,410 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-1.c [2020-09-25 02:02:19,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:02:19,442 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:02:19,464 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:02:19,494 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:02:19,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:02:19,495 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:02:19,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:02:19,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:02:19,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:02:19,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:02:19,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:02:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 02:02:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:02:19,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:19,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:19,529 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:19,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:19,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 02:02:19,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:19,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 02:02:19,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:19,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:19,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:02:19,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 02:02:19,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:02:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:02:19,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:19,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:19,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:19,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:19,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:19,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:02:19,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:19,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:19,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:19,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:19,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:02:19,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:02:20,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 02:02:20,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:20,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:02:20,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350363017] [2020-09-25 02:02:20,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:02:20,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:20,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:02:20,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:02:20,035 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 02:02:20,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:20,171 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 02:02:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:02:20,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:02:20,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:20,188 INFO L225 Difference]: With dead ends: 58 [2020-09-25 02:02:20,189 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 02:02:20,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:02:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 02:02:20,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 02:02:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 02:02:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 02:02:20,252 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 02:02:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:20,252 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 02:02:20,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:02:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 02:02:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:02:20,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:20,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:20,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:02:20,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:20,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:20,257 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 02:02:20,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:20,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733146020] [2020-09-25 02:02:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:20,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:20,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:02:20,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 02:02:20,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:02:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:20,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:20,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:20,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:20,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:20,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:02:20,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:20,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:20,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:20,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:20,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:20,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:02:20,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:02:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:02:20,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733146020] [2020-09-25 02:02:20,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:20,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:02:20,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723799021] [2020-09-25 02:02:20,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:02:20,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:20,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:02:20,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:02:20,508 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 02:02:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:20,553 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 02:02:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:02:20,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:02:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:20,557 INFO L225 Difference]: With dead ends: 50 [2020-09-25 02:02:20,558 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 02:02:20,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:02:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 02:02:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 02:02:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 02:02:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 02:02:20,582 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 02:02:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:20,585 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 02:02:20,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:02:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 02:02:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:02:20,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:20,587 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:02:20,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:02:20,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:20,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:20,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 02:02:20,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:20,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509914033] [2020-09-25 02:02:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:22,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:22,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:02:22,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-09-25 02:02:22,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:02:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:22,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:22,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:22,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:22,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:22,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:22,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:02:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 02:02:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:02:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 02:02:22,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:22,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:22,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:22,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:02:22,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:22,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:02:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:22,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:22,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:22,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:22,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:02:22,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:02:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:22,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:02:22,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509914033] [2020-09-25 02:02:22,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:22,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:02:22,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323092349] [2020-09-25 02:02:22,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:02:22,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:22,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:02:22,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:02:22,636 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-25 02:02:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:22,745 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-25 02:02:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:02:22,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:02:22,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:22,750 INFO L225 Difference]: With dead ends: 82 [2020-09-25 02:02:22,750 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:02:22,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:02:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:02:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-25 02:02:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 02:02:22,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-25 02:02:22,772 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-25 02:02:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:22,773 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-25 02:02:22,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:02:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-25 02:02:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:02:22,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:22,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:22,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:02:22,777 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:22,779 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-25 02:02:22,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:22,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059749702] [2020-09-25 02:02:22,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:22,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:23,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:23,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:02:23,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:23,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-09-25 02:02:23,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:02:23,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:23,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:23,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:23,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:23,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:23,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:23,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:24,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:24,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 02:02:24,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:02:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:24,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:24,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:24,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:24,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:24,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:02:24,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:24,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:24,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:24,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:24,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:24,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:02:24,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:02:24,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059749702] [2020-09-25 02:02:24,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:24,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:02:24,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165001728] [2020-09-25 02:02:24,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:02:24,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:24,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:02:24,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:02:24,152 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-25 02:02:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:24,265 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-25 02:02:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:02:24,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 02:02:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:24,268 INFO L225 Difference]: With dead ends: 56 [2020-09-25 02:02:24,269 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 02:02:24,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:02:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 02:02:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-25 02:02:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 02:02:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-25 02:02:24,278 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-25 02:02:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:24,279 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-25 02:02:24,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:02:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-25 02:02:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:02:24,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:24,281 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:02:24,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:02:24,282 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:24,282 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 02:02:24,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:24,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795607596] [2020-09-25 02:02:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:24,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:24,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:26,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:02:26,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:02:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1730 [2020-09-25 02:02:26,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:02:26,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:26,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:26,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:26,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:26,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:26,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:26,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:02:26,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-25 02:02:26,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:02:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:26,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:26,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:26,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:02:26,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:26,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:26,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:26,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 02:02:26,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 02:02:26,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795607596] [2020-09-25 02:02:26,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:26,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:02:26,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290689591] [2020-09-25 02:02:26,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:02:26,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:02:26,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:02:26,659 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 7 states. [2020-09-25 02:02:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:26,780 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-09-25 02:02:26,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:02:26,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 02:02:26,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:26,783 INFO L225 Difference]: With dead ends: 100 [2020-09-25 02:02:26,783 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:02:26,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:02:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:02:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-25 02:02:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 02:02:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-25 02:02:26,795 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-25 02:02:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:26,796 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-25 02:02:26,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:02:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-25 02:02:26,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 02:02:26,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:26,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:26,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:02:26,799 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:26,800 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 02:02:26,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:26,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013982094] [2020-09-25 02:02:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:26,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:26,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:27,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:31,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:31,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 02:02:31,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:02:31,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:02:31,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:02:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:31,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:31,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:31,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:31,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:31,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:33,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:33,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:02:33,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1197 [2020-09-25 02:02:33,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:02:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:33,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:33,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:02:33,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 02:02:33,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:02:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:33,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:33,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:33,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:33,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:02:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:33,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:33,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:02:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:33,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 02:02:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:33,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:33,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:33,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:02:33,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 02:02:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 02:02:33,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013982094] [2020-09-25 02:02:33,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:33,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:02:33,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788395373] [2020-09-25 02:02:33,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:02:33,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:33,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:02:33,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:02:33,172 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 6 states. [2020-09-25 02:02:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:33,280 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2020-09-25 02:02:33,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:02:33,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-25 02:02:33,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:33,285 INFO L225 Difference]: With dead ends: 100 [2020-09-25 02:02:33,285 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 02:02:33,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:02:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 02:02:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 02:02:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 02:02:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-25 02:02:33,308 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 51 [2020-09-25 02:02:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:33,312 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-25 02:02:33,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:02:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-25 02:02:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:02:33,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:33,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:33,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:02:33,320 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:33,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:33,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-25 02:02:33,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:33,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041687109] [2020-09-25 02:02:33,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:33,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:33,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:33,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:34,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:38,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:02:38,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:38,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:02:38,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:02:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:38,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:38,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:38,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:38,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:02:38,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:38,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:40,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:40,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-09-25 02:02:40,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:02:40,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:40,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:40,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 02:02:40,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:02:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:40,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:40,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:02:40,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:40,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:40,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:02:40,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:40,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:40,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:02:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 02:02:40,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041687109] [2020-09-25 02:02:40,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:40,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:02:40,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935433182] [2020-09-25 02:02:40,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:02:40,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:40,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:02:40,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:02:40,724 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2020-09-25 02:02:40,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:40,957 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2020-09-25 02:02:40,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:02:40,958 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-25 02:02:40,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:40,960 INFO L225 Difference]: With dead ends: 102 [2020-09-25 02:02:40,960 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 02:02:40,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:02:40,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 02:02:40,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2020-09-25 02:02:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 02:02:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 111 transitions. [2020-09-25 02:02:40,977 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 111 transitions. Word has length 52 [2020-09-25 02:02:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:40,978 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 111 transitions. [2020-09-25 02:02:40,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:02:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 111 transitions. [2020-09-25 02:02:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 02:02:40,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:40,980 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:40,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:02:40,981 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:40,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash -521446491, now seen corresponding path program 1 times [2020-09-25 02:02:40,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:40,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338885776] [2020-09-25 02:02:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:46,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 02:02:46,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:02:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 02:02:46,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:02:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:46,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:46,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:46,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:46,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:46,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:50,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:51,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 02:02:51,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 02:02:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:02:51,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:02:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:02:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:02:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:52,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:02:52,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-09-25 02:02:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:02:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:02:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:52,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:52,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 02:02:52,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:52,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:52,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:52,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:52,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:02:52,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:52,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:52,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:52,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:52,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:02:52,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:52,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:52,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:52,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:52,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:52,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:02:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:52,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:52,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:52,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:02:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 02:02:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 02:02:52,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338885776] [2020-09-25 02:02:52,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:52,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:02:52,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151489078] [2020-09-25 02:02:52,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:02:52,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:02:52,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:02:52,646 INFO L87 Difference]: Start difference. First operand 84 states and 111 transitions. Second operand 9 states. [2020-09-25 02:02:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:52,844 INFO L93 Difference]: Finished difference Result 173 states and 249 transitions. [2020-09-25 02:02:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:02:52,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 02:02:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:52,847 INFO L225 Difference]: With dead ends: 173 [2020-09-25 02:02:52,847 INFO L226 Difference]: Without dead ends: 95 [2020-09-25 02:02:52,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:02:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-25 02:02:52,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2020-09-25 02:02:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 02:02:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2020-09-25 02:02:52,874 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 69 [2020-09-25 02:02:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:52,877 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2020-09-25 02:02:52,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:02:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2020-09-25 02:02:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 02:02:52,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:52,881 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:52,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:02:52,881 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:52,882 INFO L82 PathProgramCache]: Analyzing trace with hash -439633211, now seen corresponding path program 1 times [2020-09-25 02:02:52,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:52,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002130471] [2020-09-25 02:02:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:52,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 02:02:57,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:02:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:02:57,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:02:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:57,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:57,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:57,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:57,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:57,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:58,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:58,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:02,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:03:02,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:03:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:03:02,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:02,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:04,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:04,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-09-25 02:03:04,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:03:04,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:04,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:03:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:03:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:04,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:04,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:04,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:04,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:04,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:04,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:04,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:04,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:04,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:04,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:03:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:04,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:03:04,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 02:03:04,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002130471] [2020-09-25 02:03:04,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:04,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:03:04,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439097734] [2020-09-25 02:03:04,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:03:04,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:04,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:03:04,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:03:04,346 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand 10 states. [2020-09-25 02:03:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:04,560 INFO L93 Difference]: Finished difference Result 177 states and 263 transitions. [2020-09-25 02:03:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:03:04,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-25 02:03:04,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:04,563 INFO L225 Difference]: With dead ends: 177 [2020-09-25 02:03:04,564 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 02:03:04,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:03:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 02:03:04,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-09-25 02:03:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 02:03:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 130 transitions. [2020-09-25 02:03:04,587 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 130 transitions. Word has length 70 [2020-09-25 02:03:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:04,587 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 130 transitions. [2020-09-25 02:03:04,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:03:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 130 transitions. [2020-09-25 02:03:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 02:03:04,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:04,590 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:04,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:03:04,590 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 2 times [2020-09-25 02:03:04,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:04,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624828049] [2020-09-25 02:03:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:09,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 02:03:09,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 02:03:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:03:09,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:03:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:09,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:09,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:09,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:09,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:09,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:09,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:09,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking...