/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 interpolation-heuristic=FIRST --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_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:58:34,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:58:34,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:58:34,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:58:34,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:58:34,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:58:34,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:58:34,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:58:34,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:58:34,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:58:34,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:58:34,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:58:34,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:58:34,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:58:34,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:58:34,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:58:34,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:58:34,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:58:34,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:58:34,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:58:34,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:58:34,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:58:34,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:58:34,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:58:34,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:58:34,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:58:34,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:58:34,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:58:34,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:58:34,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:58:34,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:58:34,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:58:34,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:58:34,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:58:34,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:58:34,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:58:34,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:58:34,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:58:34,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:58:34,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:58:34,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:58:34,680 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 [2020-09-24 15:58:34,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:58:34,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:58:34,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:58:34,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:58:34,727 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:58:34,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:58:34,728 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:58:34,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:58:34,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:58:34,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:58:34,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:58:34,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:58:34,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:58:34,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:58:34,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:58:34,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:58:34,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:58:34,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:58:34,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:58:34,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:58:34,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:58:34,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:58:34,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:58:34,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:58:34,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:58:34,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:58:34,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:58:34,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:58:34,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:58:34,734 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:58:35,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:58:35,224 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:58:35,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:58:35,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:58:35,232 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:58:35,234 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-24 15:58:35,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3aa1047f6/4c807841e1b9447ebdbe87e8a450d2ed/FLAGfc28a179e [2020-09-24 15:58:35,894 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:58:35,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-24 15:58:35,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3aa1047f6/4c807841e1b9447ebdbe87e8a450d2ed/FLAGfc28a179e [2020-09-24 15:58:36,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3aa1047f6/4c807841e1b9447ebdbe87e8a450d2ed [2020-09-24 15:58:36,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:58:36,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:58:36,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:36,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:58:36,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:58:36,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:36" (1/1) ... [2020-09-24 15:58:36,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcebea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36, skipping insertion in model container [2020-09-24 15:58:36,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:36" (1/1) ... [2020-09-24 15:58:36,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:58:36,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:58:36,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:36,529 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:58:36,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:36,569 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:58:36,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36 WrapperNode [2020-09-24 15:58:36,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:36,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:58:36,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:58:36,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:58:36,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36" (1/1) ... [2020-09-24 15:58:36,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36" (1/1) ... [2020-09-24 15:58:36,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36" (1/1) ... [2020-09-24 15:58:36,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36" (1/1) ... [2020-09-24 15:58:36,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36" (1/1) ... [2020-09-24 15:58:36,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36" (1/1) ... [2020-09-24 15:58:36,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36" (1/1) ... [2020-09-24 15:58:36,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:58:36,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:58:36,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:58:36,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:58:36,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36" (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 [2020-09-24 15:58:36,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:58:36,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:58:36,774 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 15:58:36,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:58:36,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:58:36,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:58:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 15:58:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:58:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:58:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:58:37,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:58:37,013 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:58:37,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:37 BoogieIcfgContainer [2020-09-24 15:58:37,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:58:37,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:58:37,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:58:37,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:58:37,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:58:36" (1/3) ... [2020-09-24 15:58:37,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9d4e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:37, skipping insertion in model container [2020-09-24 15:58:37,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:36" (2/3) ... [2020-09-24 15:58:37,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9d4e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:37, skipping insertion in model container [2020-09-24 15:58:37,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:37" (3/3) ... [2020-09-24 15:58:37,031 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-24 15:58:37,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:58:37,059 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:58:37,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:58:37,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:58:37,171 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:58:37,171 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:58:37,171 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:58:37,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:58:37,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:58:37,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:58:37,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:58:37,197 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 15:58:37,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 15:58:37,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:37,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:37,207 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:37,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:37,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 15:58:37,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:37,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825522582] [2020-09-24 15:58:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:37,373 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:37,373 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:37,373 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 15:58:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 15:58:37,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:37,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:37,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:37,440 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:37,440 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:37,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:37,440 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:37,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:37,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:37,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:37,463 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:37,463 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:37,463 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:37,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:37,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:37,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:37,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:37,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:58:37,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825522582] [2020-09-24 15:58:37,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:37,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:37,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332673872] [2020-09-24 15:58:37,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:37,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:37,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:37,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:37,546 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 15:58:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:37,667 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 15:58:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:58:37,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 15:58:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:37,684 INFO L225 Difference]: With dead ends: 44 [2020-09-24 15:58:37,684 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 15:58:37,689 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 [2020-09-24 15:58:37,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 15:58:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 15:58:37,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 15:58:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 15:58:37,748 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 15:58:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:37,749 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 15:58:37,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 15:58:37,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 15:58:37,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:37,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:37,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:58:37,752 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:37,753 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 15:58:37,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:37,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879613081] [2020-09-24 15:58:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:37,779 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:37,780 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:37,780 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:37,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:37,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 15:58:37,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:37,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:37,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:37,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:37,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:37,801 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:37,801 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:37,802 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:37,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:37,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:37,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:37,822 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:37,822 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:37,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:37,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:37,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:37,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:58:37,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879613081] [2020-09-24 15:58:37,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:37,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:37,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700314512] [2020-09-24 15:58:37,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:37,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:37,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:37,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:37,889 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 15:58:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:37,999 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 15:58:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:58:38,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 15:58:38,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:38,005 INFO L225 Difference]: With dead ends: 36 [2020-09-24 15:58:38,006 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 15:58:38,008 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 [2020-09-24 15:58:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 15:58:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 15:58:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 15:58:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 15:58:38,019 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 15:58:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:38,020 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 15:58:38,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 15:58:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 15:58:38,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:38,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:38,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:58:38,023 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 15:58:38,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:38,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134845393] [2020-09-24 15:58:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,087 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,087 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,087 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 15:58:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 15:58:38,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 15:58:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,117 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,117 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,117 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,118 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:38,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:38,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,145 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,146 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,146 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,146 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 15:58:38,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:58:38,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 15:58:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,188 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,189 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,189 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:38,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:38,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:38,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:58:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,221 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,221 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,221 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,222 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:38,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:58:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 15:58:38,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134845393] [2020-09-24 15:58:38,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:38,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:58:38,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948425543] [2020-09-24 15:58:38,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:58:38,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:38,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:58:38,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:58:38,235 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 15:58:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:38,374 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-24 15:58:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:58:38,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 15:58:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:38,376 INFO L225 Difference]: With dead ends: 52 [2020-09-24 15:58:38,376 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 15:58:38,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 15:58:38,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 15:58:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 15:58:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 15:58:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 15:58:38,386 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-24 15:58:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:38,387 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 15:58:38,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:58:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 15:58:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:38,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:38,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:38,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:58:38,390 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:38,390 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-24 15:58:38,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:38,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079841503] [2020-09-24 15:58:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,417 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,417 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,417 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,418 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:38,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:38,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 15:58:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,441 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,441 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,441 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,442 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:38,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:38,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,469 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,469 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,470 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:38,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:38,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 15:58:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,541 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:58:38,541 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,541 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:38,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:38,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:58:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:58:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,586 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,586 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,586 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,587 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:38,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:38,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 15:58:38,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079841503] [2020-09-24 15:58:38,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:38,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:58:38,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850367832] [2020-09-24 15:58:38,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:58:38,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:38,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:58:38,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:58:38,600 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-24 15:58:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:38,729 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2020-09-24 15:58:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:58:38,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 15:58:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:38,732 INFO L225 Difference]: With dead ends: 66 [2020-09-24 15:58:38,733 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 15:58:38,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:58:38,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 15:58:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 15:58:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 15:58:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2020-09-24 15:58:38,745 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 34 [2020-09-24 15:58:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:38,746 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-09-24 15:58:38,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:58:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2020-09-24 15:58:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 15:58:38,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:38,749 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-09-24 15:58:38,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:58:38,749 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:38,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1274787059, now seen corresponding path program 2 times [2020-09-24 15:58:38,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:38,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402714907] [2020-09-24 15:58:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,782 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,783 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,783 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,783 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 15:58:38,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 15:58:38,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:58:38,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 15:58:38,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,821 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,821 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,822 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:38,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:38,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,887 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,887 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,887 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,888 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 15:58:38,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 15:58:38,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:58:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 15:58:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:38,968 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:38,968 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:38,969 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:38,969 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:38,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:38,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:38,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:38,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:38,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,052 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,052 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,052 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,052 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:39,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:39,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:58:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,061 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,062 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,062 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,062 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:39,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:39,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:39,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:58:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:39,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:39,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 15:58:39,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402714907] [2020-09-24 15:58:39,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:39,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 15:58:39,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727823547] [2020-09-24 15:58:39,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:58:39,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:39,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:58:39,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:58:39,107 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 9 states. [2020-09-24 15:58:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:39,256 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2020-09-24 15:58:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 15:58:39,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 15:58:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:39,260 INFO L225 Difference]: With dead ends: 89 [2020-09-24 15:58:39,260 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 15:58:39,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:58:39,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 15:58:39,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-09-24 15:58:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 15:58:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2020-09-24 15:58:39,273 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 51 [2020-09-24 15:58:39,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:39,274 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2020-09-24 15:58:39,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:58:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2020-09-24 15:58:39,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 15:58:39,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:39,277 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-24 15:58:39,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:58:39,278 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:39,278 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 3 times [2020-09-24 15:58:39,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:39,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535608012] [2020-09-24 15:58:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,302 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,303 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,303 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 15:58:39,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:39,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:58:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:39,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 15:58:39,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:39,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,329 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,329 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,329 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:39,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:39,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,371 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,371 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,371 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,372 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:39,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 15:58:39,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:58:39,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:39,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 15:58:39,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:39,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,442 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:39,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 15:58:39,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:39,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,485 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,486 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,486 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:39,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:58:39,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:58:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:58:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,511 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,511 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,513 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:39,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:39,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:39,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:39,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:58:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,525 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,525 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,525 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:39,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:39,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 15:58:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 31 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 15:58:39,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535608012] [2020-09-24 15:58:39,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:39,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:58:39,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441514390] [2020-09-24 15:58:39,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:58:39,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:39,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:58:39,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:58:39,553 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 8 states. [2020-09-24 15:58:39,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:39,712 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2020-09-24 15:58:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 15:58:39,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-24 15:58:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:39,715 INFO L225 Difference]: With dead ends: 105 [2020-09-24 15:58:39,715 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 15:58:39,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 15:58:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-09-24 15:58:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 15:58:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2020-09-24 15:58:39,729 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 52 [2020-09-24 15:58:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:39,730 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2020-09-24 15:58:39,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:58:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2020-09-24 15:58:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 15:58:39,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:39,736 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:39,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:58:39,736 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:39,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:39,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-24 15:58:39,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:39,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128341523] [2020-09-24 15:58:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,774 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,774 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 15:58:39,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 15:58:39,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 15:58:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,802 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,802 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,803 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,803 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:39,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:39,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:39,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,859 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:58:39,860 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,860 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,860 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 15:58:39,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 15:58:39,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:58:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 15:58:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,915 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:58:39,915 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,916 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,916 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:39,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:58:39,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:58:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 15:58:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,964 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:58:39,964 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,964 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:58:39,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:39,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,003 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:58:40,004 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,004 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,004 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:40,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:40,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:58:40,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:40,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:58:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,033 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,034 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:40,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:58:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,043 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,043 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,044 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,044 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:40,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:40,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:58:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:58:40,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 15:58:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 15:58:40,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,126 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:58:40,127 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,127 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:40,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:58:40,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 15:58:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:40,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,202 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,202 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,202 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,203 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:40,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:40,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 15:58:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,213 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,214 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,214 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,214 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:40,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:40,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:40,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:58:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,222 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,223 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:40,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:40,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:58:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,234 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,235 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,235 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,236 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:40,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:40,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:58:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,250 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,251 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,251 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:40,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 108 proven. 189 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-09-24 15:58:40,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128341523] [2020-09-24 15:58:40,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:40,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:58:40,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676500515] [2020-09-24 15:58:40,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:58:40,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:40,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:58:40,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:40,346 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand 11 states. [2020-09-24 15:58:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:40,756 INFO L93 Difference]: Finished difference Result 145 states and 224 transitions. [2020-09-24 15:58:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:58:40,757 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-09-24 15:58:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:40,763 INFO L225 Difference]: With dead ends: 145 [2020-09-24 15:58:40,763 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 15:58:40,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:58:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 15:58:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2020-09-24 15:58:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 15:58:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2020-09-24 15:58:40,793 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 123 [2020-09-24 15:58:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:40,794 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2020-09-24 15:58:40,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:58:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2020-09-24 15:58:40,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 15:58:40,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:40,807 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:40,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:58:40,807 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:40,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:40,808 INFO L82 PathProgramCache]: Analyzing trace with hash 532445701, now seen corresponding path program 5 times [2020-09-24 15:58:40,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:40,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713327516] [2020-09-24 15:58:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,903 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:58:40,904 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,904 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,904 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 15:58:40,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 15:58:40,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 15:58:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,963 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,963 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,963 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,963 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:40,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:40,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:40,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,092 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:58:41,092 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,092 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-24 15:58:41,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 15:58:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 15:58:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:58:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-24 15:58:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,190 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:58:41,190 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,190 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,190 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 15:58:41,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 15:58:41,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 15:58:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,268 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:58:41,268 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,268 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,269 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:41,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 15:58:41,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 15:58:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,322 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:58:41,322 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,322 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:41,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:41,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,366 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:58:41,367 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,367 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,367 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:41,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:41,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:41,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:58:41,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:58:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,391 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,392 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:41,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:41,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:41,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:41,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:58:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,402 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,403 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,403 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:41,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:41,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:58:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,417 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,417 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,418 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,418 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:41,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:41,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 15:58:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,427 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,427 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,428 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,428 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:41,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:58:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,448 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,448 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,449 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:41,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:41,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 15:58:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,496 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,497 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,497 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 15:58:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 15:58:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:58:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 15:58:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,554 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,554 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,554 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 15:58:41,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:58:41,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:58:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 15:58:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,614 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,614 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,614 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,615 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:41,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:41,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 15:58:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,658 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,658 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,659 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,659 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:41,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:58:41,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,700 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,702 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,702 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:41,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:41,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:41,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:58:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,712 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,712 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,713 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,713 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:41,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:41,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:41,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:58:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,735 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,735 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,735 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,736 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:41,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:41,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:41,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:58:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,763 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,763 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,763 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,764 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:41,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:41,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:58:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 15:58:41,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:41,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:58:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,777 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:41,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:41,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:58:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,783 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,784 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,784 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,784 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:41,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:41,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 15:58:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,800 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:58:41,800 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,801 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,801 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:58:41,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:41,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 377 proven. 439 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2020-09-24 15:58:41,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713327516] [2020-09-24 15:58:41,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:41,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:58:41,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261275093] [2020-09-24 15:58:41,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:58:41,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:41,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:58:41,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:58:41,936 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand 14 states. [2020-09-24 15:58:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:42,396 INFO L93 Difference]: Finished difference Result 149 states and 207 transitions. [2020-09-24 15:58:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 15:58:42,397 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 193 [2020-09-24 15:58:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:42,399 INFO L225 Difference]: With dead ends: 149 [2020-09-24 15:58:42,399 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 15:58:42,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2020-09-24 15:58:42,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 15:58:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2020-09-24 15:58:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 15:58:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2020-09-24 15:58:42,413 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 193 [2020-09-24 15:58:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:42,413 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2020-09-24 15:58:42,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:58:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2020-09-24 15:58:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 15:58:42,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:42,415 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:42,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:58:42,416 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:42,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:42,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1618484333, now seen corresponding path program 6 times [2020-09-24 15:58:42,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:42,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410541470] [2020-09-24 15:58:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:58:42,443 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:58:42,443 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:58:42,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 15:58:42,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:58:42 BoogieIcfgContainer [2020-09-24 15:58:42,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:58:42,483 INFO L168 Benchmark]: Toolchain (without parser) took 6227.57 ms. Allocated memory was 140.0 MB in the beginning and 287.8 MB in the end (delta: 147.8 MB). Free memory was 103.4 MB in the beginning and 109.3 MB in the end (delta: -5.9 MB). Peak memory consumption was 141.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:42,483 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:58:42,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.92 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:42,485 INFO L168 Benchmark]: Boogie Preprocessor took 38.83 ms. Allocated memory is still 140.0 MB. Free memory was 93.5 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:42,486 INFO L168 Benchmark]: RCFGBuilder took 408.84 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 169.9 MB in the end (delta: -77.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:42,487 INFO L168 Benchmark]: TraceAbstraction took 5458.00 ms. Allocated memory was 203.4 MB in the beginning and 287.8 MB in the end (delta: 84.4 MB). Free memory was 169.2 MB in the beginning and 109.3 MB in the end (delta: 59.9 MB). Peak memory consumption was 144.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:42,490 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.92 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.83 ms. Allocated memory is still 140.0 MB. Free memory was 93.5 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.84 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 169.9 MB in the end (delta: -77.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5458.00 ms. Allocated memory was 203.4 MB in the beginning and 287.8 MB in the end (delta: 84.4 MB). Free memory was 169.2 MB in the beginning and 109.3 MB in the end (delta: 59.9 MB). Peak memory consumption was 144.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] int x = 5; [L25] CALL, EXPR fibo(x) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L25] RET, EXPR fibo(x) [L25] int result = fibo(x); [L26] COND TRUE result == 5 [L27] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, OverallIterations: 9, TraceHistogramMax: 21, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 407 SDslu, 704 SDs, 0 SdLazy, 750 SolverSat, 196 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 659 NumberOfCodeBlocks, 659 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 511 ConstructedInterpolants, 0 QuantifiedInterpolants, 168342 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1255/1932 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...