/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/id_i15_o15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:58:55,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:58:55,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:58:55,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:58:55,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:58:55,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:58:55,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:58:55,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:58:55,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:58:55,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:58:55,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:58:55,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:58:55,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:58:55,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:58:55,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:58:55,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:58:55,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:58:55,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:58:55,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:58:55,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:58:55,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:58:55,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:58:55,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:58:55,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:58:55,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:58:55,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:58:55,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:58:55,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:58:55,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:58:55,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:58:55,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:58:55,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:58:55,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:58:55,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:58:55,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:58:55,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:58:55,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:58:55,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:58:55,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:58:55,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:58:55,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:58:55,698 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 15:58:55,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:58:55,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:58:55,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:58:55,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:58:55,749 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:58:55,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:58:55,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:58:55,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:58:55,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:58:55,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:58:55,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:58:55,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:58:55,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:58:55,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:58:55,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:58:55,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:58:55,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:58:55,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:58:55,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:58:55,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:58:55,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:58:55,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:58:55,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:58:55,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:58:55,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:58:55,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:58:55,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:58:55,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:58:55,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:58:55,757 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 15:58:56,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:58:56,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:58:56,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:58:56,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:58:56,300 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:58:56,301 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-24 15:58:56,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09e777276/6010a93d438a494ebbc031cd61dbf23f/FLAG50f244000 [2020-09-24 15:58:56,949 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:58:56,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-24 15:58:56,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09e777276/6010a93d438a494ebbc031cd61dbf23f/FLAG50f244000 [2020-09-24 15:58:57,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09e777276/6010a93d438a494ebbc031cd61dbf23f [2020-09-24 15:58:57,305 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:58:57,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:58:57,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:57,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:58:57,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:58:57,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:57" (1/1) ... [2020-09-24 15:58:57,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57, skipping insertion in model container [2020-09-24 15:58:57,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:57" (1/1) ... [2020-09-24 15:58:57,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:58:57,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:58:57,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:57,584 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:58:57,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:57,623 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:58:57,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57 WrapperNode [2020-09-24 15:58:57,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:57,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:58:57,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:58:57,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:58:57,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57" (1/1) ... [2020-09-24 15:58:57,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57" (1/1) ... [2020-09-24 15:58:57,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57" (1/1) ... [2020-09-24 15:58:57,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57" (1/1) ... [2020-09-24 15:58:57,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57" (1/1) ... [2020-09-24 15:58:57,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57" (1/1) ... [2020-09-24 15:58:57,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57" (1/1) ... [2020-09-24 15:58:57,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:58:57,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:58:57,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:58:57,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:58:57,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57" (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 15:58:57,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:58:57,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:58:57,827 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 15:58:57,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:58:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:58:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:58:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 15:58:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:58:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:58:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:58:58,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:58:58,025 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:58:58,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:58 BoogieIcfgContainer [2020-09-24 15:58:58,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:58:58,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:58:58,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:58:58,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:58:58,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:58:57" (1/3) ... [2020-09-24 15:58:58,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c3cac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:58, skipping insertion in model container [2020-09-24 15:58:58,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:57" (2/3) ... [2020-09-24 15:58:58,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c3cac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:58, skipping insertion in model container [2020-09-24 15:58:58,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:58" (3/3) ... [2020-09-24 15:58:58,041 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c [2020-09-24 15:58:58,053 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:58:58,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:58:58,087 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:58:58,122 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:58:58,122 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:58:58,122 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:58:58,122 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:58:58,123 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:58:58,123 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:58:58,123 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:58:58,123 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:58:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-24 15:58:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 15:58:58,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:58,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:58,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:58,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:58,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-24 15:58:58,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:58,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584098036] [2020-09-24 15:58:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:58,389 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:58,389 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:58,390 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:58,390 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:58,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 15:58:58,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 15:58:58,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:58,487 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:58,487 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:58,489 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:58,489 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:58,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:58,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:58,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:58,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:58,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:58,546 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:58,547 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:58,547 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:58,547 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:58,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:58,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 15:58:58,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:58,595 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 15:58:58,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584098036] [2020-09-24 15:58:58,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:58,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:58,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902183381] [2020-09-24 15:58:58,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:58,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:58,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:58,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:58,636 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-24 15:58:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:58,746 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 15:58:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:58:58,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 15:58:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:58,765 INFO L225 Difference]: With dead ends: 37 [2020-09-24 15:58:58,765 INFO L226 Difference]: Without dead ends: 23 [2020-09-24 15:58:58,771 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 15:58:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-24 15:58:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-24 15:58:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-24 15:58:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-24 15:58:58,845 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-24 15:58:58,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:58,846 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-24 15:58:58,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:58,846 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-24 15:58:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 15:58:58,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:58,853 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:58,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:58:58,854 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:58,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:58,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-24 15:58:58,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:58,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19923734] [2020-09-24 15:58:58,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:58,943 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:58,944 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:58,945 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:58,945 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:58,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:58,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 15:58:58,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 15:58:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:59,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,013 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,013 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,013 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,014 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:59,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:59,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:59,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:59,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,073 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:59,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 15:58:59,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:59,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,177 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,177 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,178 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:59,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:58:59,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:59,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 15:58:59,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19923734] [2020-09-24 15:58:59,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:59,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:58:59,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651400643] [2020-09-24 15:58:59,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:58:59,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:59,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:58:59,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:58:59,237 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-24 15:58:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:59,312 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-24 15:58:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:59,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 15:58:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:59,314 INFO L225 Difference]: With dead ends: 34 [2020-09-24 15:58:59,314 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 15:58:59,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:58:59,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 15:58:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 15:58:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 15:58:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-24 15:58:59,325 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-24 15:58:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:59,325 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-24 15:58:59,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:58:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-24 15:58:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 15:58:59,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:59,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:59,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:58:59,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:59,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-24 15:58:59,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:59,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668927060] [2020-09-24 15:58:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,359 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,360 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,360 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,360 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 15:58:59,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 15:58:59,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:58:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 15:58:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:59,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,388 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,389 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,390 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,390 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:59,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:59,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:59,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,432 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,432 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,433 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,433 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:58:59,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 15:58:59,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:58:59,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:59,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 15:58:59,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,499 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,499 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,499 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:59,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:58:59,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:59,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:59,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:59,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,552 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,552 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,553 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,553 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:59,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:58:59,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:59,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 15:58:59,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668927060] [2020-09-24 15:58:59,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:59,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:58:59,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855252182] [2020-09-24 15:58:59,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:58:59,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:59,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:58:59,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:58:59,592 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2020-09-24 15:58:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:59,663 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 15:58:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:58:59,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-09-24 15:58:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:59,665 INFO L225 Difference]: With dead ends: 39 [2020-09-24 15:58:59,665 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 15:58:59,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 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 15:58:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 15:58:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-24 15:58:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 15:58:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-24 15:58:59,674 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-24 15:58:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:59,674 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-24 15:58:59,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:58:59,675 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-24 15:58:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 15:58:59,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:59,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:59,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:58:59,677 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:59,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:59,678 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-24 15:58:59,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:59,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533666998] [2020-09-24 15:58:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,712 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,713 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,713 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,713 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:59,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 15:58:59,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:58:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 15:58:59,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,734 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,735 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,735 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,735 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:59,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:59,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:59,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:58:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,771 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,772 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,772 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,772 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:58:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 15:58:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:58:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 15:58:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:59,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,822 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,822 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:58:59,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:59,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,857 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,858 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,858 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,858 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:58:59,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:59,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:59,887 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:59,888 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:59,888 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:59,888 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:59,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:59,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:59,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:58:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:58:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 15:58:59,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533666998] [2020-09-24 15:58:59,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:59,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:58:59,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839594443] [2020-09-24 15:58:59,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:58:59,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:59,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:58:59,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:58:59,916 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2020-09-24 15:58:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:00,000 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-24 15:59:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 15:59:00,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-09-24 15:59:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:00,002 INFO L225 Difference]: With dead ends: 44 [2020-09-24 15:59:00,002 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 15:59:00,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:59:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 15:59:00,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 15:59:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 15:59:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 15:59:00,011 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-24 15:59:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:00,012 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 15:59:00,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:59:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 15:59:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 15:59:00,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:00,014 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:00,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:59:00,014 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:00,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-24 15:59:00,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:00,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240443645] [2020-09-24 15:59:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,054 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,055 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,055 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 15:59:00,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 15:59:00,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:59:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 15:59:00,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,079 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,079 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,079 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,081 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:00,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:59:00,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,131 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,131 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,132 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,132 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:00,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 15:59:00,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:59:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 15:59:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,200 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,200 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,201 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:00,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 15:59:00,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,255 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,255 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,255 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:00,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:59:00,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,299 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,299 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,300 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,300 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:00,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:59:00,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:00,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,345 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,345 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,345 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,346 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:00,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:59:00,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:00,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 15:59:00,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240443645] [2020-09-24 15:59:00,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:00,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:59:00,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961810027] [2020-09-24 15:59:00,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:59:00,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:00,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:59:00,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:59:00,393 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 11 states. [2020-09-24 15:59:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:00,504 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-24 15:59:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 15:59:00,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-24 15:59:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:00,506 INFO L225 Difference]: With dead ends: 49 [2020-09-24 15:59:00,506 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 15:59:00,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-09-24 15:59:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 15:59:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-24 15:59:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 15:59:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-24 15:59:00,515 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-24 15:59:00,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:00,516 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-24 15:59:00,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:59:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-24 15:59:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 15:59:00,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:00,519 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:00,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:59:00,519 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:00,520 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-24 15:59:00,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:00,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411962228] [2020-09-24 15:59:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,568 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,568 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,568 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,569 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 15:59:00,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 15:59:00,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:59:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 15:59:00,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,610 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,611 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,611 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,611 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:00,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:00,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,653 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,653 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,653 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,653 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:00,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 15:59:00,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:59:00,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:00,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 15:59:00,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,709 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,709 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:00,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 15:59:00,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,768 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,768 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,768 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,769 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:00,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 15:59:00,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:00,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,807 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,807 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,808 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,808 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:00,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:59:00,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:00,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,839 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,840 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,840 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,840 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:00,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:59:00,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:00,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:00,865 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:00,865 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:00,865 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:00,866 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:00,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:00,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:00,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:59:00,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:00,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 15:59:00,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411962228] [2020-09-24 15:59:00,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:00,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:59:00,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365915932] [2020-09-24 15:59:00,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:59:00,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:00,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:59:00,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:59:00,896 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 11 states. [2020-09-24 15:59:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:00,998 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-24 15:59:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:59:00,999 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-09-24 15:59:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:01,001 INFO L225 Difference]: With dead ends: 54 [2020-09-24 15:59:01,001 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 15:59:01,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:59:01,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 15:59:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 15:59:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 15:59:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-24 15:59:01,009 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-24 15:59:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:01,009 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-24 15:59:01,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:59:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-24 15:59:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 15:59:01,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:01,011 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:01,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:59:01,013 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:01,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-24 15:59:01,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:01,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997346869] [2020-09-24 15:59:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,059 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,060 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,060 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,060 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:59:01,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 15:59:01,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 15:59:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:59:01,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,082 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,082 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,082 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,083 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:01,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:01,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:01,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,131 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,132 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,132 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,132 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:59:01,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 15:59:01,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 15:59:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 15:59:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,201 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,202 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,202 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:01,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 15:59:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:59:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:59:01,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,256 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,256 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,256 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,257 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:01,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 15:59:01,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,301 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,302 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,302 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,302 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:01,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:59:01,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,340 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,341 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,341 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:01,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:59:01,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,373 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,373 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,373 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,374 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:01,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:59:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,426 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,427 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,427 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,427 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:01,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:59:01,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-24 15:59:01,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997346869] [2020-09-24 15:59:01,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:01,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 15:59:01,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99352935] [2020-09-24 15:59:01,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:59:01,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:01,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:59:01,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:59:01,462 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 12 states. [2020-09-24 15:59:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:01,582 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 15:59:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 15:59:01,583 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-09-24 15:59:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:01,584 INFO L225 Difference]: With dead ends: 59 [2020-09-24 15:59:01,584 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 15:59:01,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-24 15:59:01,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 15:59:01,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 15:59:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 15:59:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-24 15:59:01,592 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-24 15:59:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:01,592 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-24 15:59:01,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:59:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-24 15:59:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 15:59:01,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:01,594 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:01,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:59:01,594 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:01,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:01,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-24 15:59:01,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:01,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608730931] [2020-09-24 15:59:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,655 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,655 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,655 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,655 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 15:59:01,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 15:59:01,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 15:59:01,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:01,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 15:59:01,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,679 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:01,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:01,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:01,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,740 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,740 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 15:59:01,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 15:59:01,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 15:59:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 15:59:01,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,824 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,825 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,825 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,825 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:59:01,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 15:59:01,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 15:59:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:59:01,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,897 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,897 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,897 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,898 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:01,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 15:59:01,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:59:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:59:01,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,953 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,953 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,953 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,953 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:01,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 15:59:01,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:01,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:01,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:01,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:01,996 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:01,996 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:01,996 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:01,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:01,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:01,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:59:01,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,034 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,034 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,034 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,035 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:02,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:59:02,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:02,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,071 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,071 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,071 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:02,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:59:02,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:02,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,097 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,098 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,098 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:02,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:59:02,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 131 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-24 15:59:02,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608730931] [2020-09-24 15:59:02,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:02,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 15:59:02,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961207511] [2020-09-24 15:59:02,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 15:59:02,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:02,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 15:59:02,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:59:02,154 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 13 states. [2020-09-24 15:59:02,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:02,279 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-24 15:59:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 15:59:02,280 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-09-24 15:59:02,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:02,282 INFO L225 Difference]: With dead ends: 64 [2020-09-24 15:59:02,282 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 15:59:02,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:59:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 15:59:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 15:59:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 15:59:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 15:59:02,290 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-24 15:59:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:02,290 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 15:59:02,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 15:59:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 15:59:02,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 15:59:02,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:02,292 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:02,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:59:02,293 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:02,293 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-24 15:59:02,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:02,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572963687] [2020-09-24 15:59:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,358 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,358 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,358 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,358 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-24 15:59:02,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 15:59:02,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 15:59:02,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:02,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 15:59:02,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:02,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,382 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,382 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,382 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,383 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:02,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:02,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:02,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,451 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,451 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,452 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,452 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 15:59:02,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 15:59:02,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 15:59:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 15:59:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:02,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,562 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 15:59:02,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 15:59:02,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:59:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 15:59:02,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,645 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,645 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,646 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,646 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:59:02,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 15:59:02,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 15:59:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:59:02,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,717 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,718 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,718 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:02,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 15:59:02,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:59:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:59:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,778 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:02,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 15:59:02,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,823 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,823 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:02,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:59:02,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:02,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,860 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,861 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,861 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,861 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:02,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:59:02,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,902 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,902 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,903 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,903 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:02,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:59:02,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:02,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:02,933 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:02,933 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:02,933 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:02,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:02,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:02,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:02,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:59:02,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:02,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 24 proven. 169 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-24 15:59:03,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572963687] [2020-09-24 15:59:03,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:03,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 15:59:03,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312492913] [2020-09-24 15:59:03,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 15:59:03,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:03,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 15:59:03,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-24 15:59:03,003 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 15 states. [2020-09-24 15:59:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:03,182 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-24 15:59:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 15:59:03,182 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-09-24 15:59:03,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:03,184 INFO L225 Difference]: With dead ends: 69 [2020-09-24 15:59:03,185 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 15:59:03,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-09-24 15:59:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 15:59:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-24 15:59:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 15:59:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-24 15:59:03,193 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-24 15:59:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:03,193 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-24 15:59:03,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 15:59:03,194 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-24 15:59:03,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 15:59:03,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:03,195 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:03,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 15:59:03,195 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:03,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:03,196 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-24 15:59:03,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:03,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646959755] [2020-09-24 15:59:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,270 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,270 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,271 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,271 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 15:59:03,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 15:59:03,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 15:59:03,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:03,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 15:59:03,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,300 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,300 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,301 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,301 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:03,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:03,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:03,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:03,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,384 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,384 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,384 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,384 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 15:59:03,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 15:59:03,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 15:59:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 15:59:03,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:03,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,512 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,512 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,512 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 15:59:03,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 15:59:03,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 15:59:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 15:59:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,607 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,608 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,608 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,608 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 15:59:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 15:59:03,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:59:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 15:59:03,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:03,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,694 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,694 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,694 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,694 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:59:03,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 15:59:03,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 15:59:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:59:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,758 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,758 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,759 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:03,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 15:59:03,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:59:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:59:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:03,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,824 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,824 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,824 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,824 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:03,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 15:59:03,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:03,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,870 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,871 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,871 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,871 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:03,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:59:03,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,910 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,910 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,910 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,911 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:03,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:59:03,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:03,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:03,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,942 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,943 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,943 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:03,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:59:03,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:03,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:03,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:03,977 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:03,977 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:03,978 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:03,978 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:03,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:03,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:03,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:59:03,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 40 proven. 203 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-24 15:59:04,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646959755] [2020-09-24 15:59:04,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:04,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 15:59:04,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433262058] [2020-09-24 15:59:04,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 15:59:04,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:04,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 15:59:04,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-24 15:59:04,048 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 15 states. [2020-09-24 15:59:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:04,204 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-24 15:59:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:59:04,204 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-09-24 15:59:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:04,206 INFO L225 Difference]: With dead ends: 74 [2020-09-24 15:59:04,206 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 15:59:04,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-24 15:59:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 15:59:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-24 15:59:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 15:59:04,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-24 15:59:04,220 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-24 15:59:04,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:04,221 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-24 15:59:04,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 15:59:04,221 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-24 15:59:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 15:59:04,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:04,224 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:04,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 15:59:04,224 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:04,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:04,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-24 15:59:04,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:04,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476421743] [2020-09-24 15:59:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:04,335 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:04,336 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:04,336 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:04,336 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:04,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 15:59:04,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 15:59:04,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:04,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 15:59:04,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:04,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 15:59:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:04,360 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:04,361 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:04,362 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:04,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:04,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:04,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:59:04,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:04,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:04,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:04,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:04,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:04,452 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:04,452 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:04,452 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:04,452 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:04,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 15:59:04,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:04,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 15:59:04,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:04,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 15:59:04,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:04,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 15:59:04,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:04,570 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:04,570 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:04,570 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:04,571 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:04,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 15:59:04,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:04,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 15:59:04,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 15:59:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 15:59:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:04,659 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:04,660 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:04,660 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:04,661 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:04,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 15:59:04,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:04,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 15:59:04,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 15:59:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 15:59:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:04,752 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:04,753 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:04,753 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:04,753 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:04,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 15:59:04,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:04,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 15:59:04,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:59:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 15:59:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:04,826 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:04,826 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:04,827 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:04,827 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:04,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:59:04,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:04,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 15:59:04,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 15:59:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:59:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:04,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:04,894 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:04,895 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:04,895 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:04,895 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:04,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:04,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 15:59:04,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:59:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:59:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:04,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:04,956 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:04,956 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:04,957 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:04,957 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:04,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 15:59:04,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,011 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,012 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,012 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:05,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:59:05,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,073 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:05,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:59:05,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:05,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:05,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:05,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,113 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,113 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,113 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,114 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:05,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:59:05,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:05,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,142 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,143 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,143 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,144 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:05,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:59:05,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:05,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:05,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 32 proven. 258 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-09-24 15:59:05,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476421743] [2020-09-24 15:59:05,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:05,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 15:59:05,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33149316] [2020-09-24 15:59:05,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 15:59:05,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:05,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 15:59:05,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-24 15:59:05,263 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 16 states. [2020-09-24 15:59:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:05,414 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 15:59:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 15:59:05,415 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 96 [2020-09-24 15:59:05,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:05,416 INFO L225 Difference]: With dead ends: 79 [2020-09-24 15:59:05,416 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 15:59:05,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-24 15:59:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 15:59:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-24 15:59:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 15:59:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-24 15:59:05,424 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-24 15:59:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:05,424 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-24 15:59:05,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 15:59:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-24 15:59:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 15:59:05,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:05,426 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:05,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 15:59:05,426 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:05,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:05,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-24 15:59:05,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:05,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684031694] [2020-09-24 15:59:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,524 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,524 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,524 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,524 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 15:59:05,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 15:59:05,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 15:59:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 15:59:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,548 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,548 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,548 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,548 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:05,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-24 15:59:05,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:05,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:05,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,646 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,647 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,647 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,647 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 15:59:05,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 15:59:05,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 15:59:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 15:59:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,775 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,775 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,775 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,776 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 15:59:05,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 15:59:05,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 15:59:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 15:59:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:05,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,888 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,888 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,889 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,889 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 15:59:05,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 15:59:05,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 15:59:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 15:59:05,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:05,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:05,981 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:05,981 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:05,981 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:05,982 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:05,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 15:59:05,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:05,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 15:59:05,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 15:59:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 15:59:05,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:06,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,059 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,059 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,059 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,060 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 15:59:06,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 15:59:06,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:59:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 15:59:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,128 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,128 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,129 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,129 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:59:06,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 15:59:06,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 15:59:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:59:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:06,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,188 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,189 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,189 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,189 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:06,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 15:59:06,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:59:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:59:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,238 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,239 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,239 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,239 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:06,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 15:59:06,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:06,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,282 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,282 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,282 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:06,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:59:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:06,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,325 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,326 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,326 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,326 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:06,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:59:06,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,358 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,358 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,358 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,359 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:06,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:59:06,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:06,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:06,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,387 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,388 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,388 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,388 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:06,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:59:06,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 18 proven. 330 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-09-24 15:59:06,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684031694] [2020-09-24 15:59:06,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:06,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 15:59:06,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739903553] [2020-09-24 15:59:06,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 15:59:06,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:06,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 15:59:06,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:59:06,486 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 17 states. [2020-09-24 15:59:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:06,667 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-24 15:59:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 15:59:06,668 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 104 [2020-09-24 15:59:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:06,669 INFO L225 Difference]: With dead ends: 84 [2020-09-24 15:59:06,669 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 15:59:06,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-24 15:59:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 15:59:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-24 15:59:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 15:59:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-24 15:59:06,676 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-24 15:59:06,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:06,676 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-24 15:59:06,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 15:59:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-24 15:59:06,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 15:59:06,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:06,678 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:06,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 15:59:06,678 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:06,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-24 15:59:06,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:06,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387278114] [2020-09-24 15:59:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,787 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,787 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,787 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,787 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 15:59:06,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 15:59:06,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 15:59:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 15:59:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:06,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,815 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,815 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,815 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,815 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:06,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:06,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:06,927 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:06,927 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:06,928 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:06,928 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:06,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 15:59:06,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 15:59:06,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 15:59:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 15:59:06,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:06,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,062 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,063 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,063 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,063 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 15:59:07,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 15:59:07,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 15:59:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 15:59:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,184 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,185 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,185 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 15:59:07,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 15:59:07,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 15:59:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 15:59:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:07,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,285 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,285 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,285 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 15:59:07,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 15:59:07,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 15:59:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 15:59:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:07,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,382 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,383 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,383 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,383 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 15:59:07,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 15:59:07,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 15:59:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 15:59:07,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,474 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,474 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,475 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 15:59:07,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 15:59:07,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:59:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 15:59:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,546 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,546 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,546 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,547 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:59:07,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 15:59:07,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 15:59:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:59:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,629 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,630 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,630 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:07,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 15:59:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:59:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:59:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:07,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,691 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,691 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,691 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,692 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:07,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 15:59:07,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:07,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,733 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,734 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,734 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,734 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:07,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:59:07,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:07,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:07,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,779 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,780 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,780 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:07,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 15:59:07,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:07,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,814 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,814 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,814 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,815 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:07,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:59:07,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:07,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:07,851 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:07,852 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:07,852 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:07,853 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:07,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:07,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:07,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:59:07,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 4 proven. 392 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-24 15:59:07,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387278114] [2020-09-24 15:59:07,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:07,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 15:59:07,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316780313] [2020-09-24 15:59:07,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 15:59:07,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:07,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 15:59:07,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:59:07,971 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 18 states. [2020-09-24 15:59:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:08,168 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-09-24 15:59:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 15:59:08,168 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-09-24 15:59:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:08,169 INFO L225 Difference]: With dead ends: 89 [2020-09-24 15:59:08,169 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 15:59:08,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-09-24 15:59:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 15:59:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-24 15:59:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 15:59:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-09-24 15:59:08,183 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 112 [2020-09-24 15:59:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:08,184 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-09-24 15:59:08,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 15:59:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-09-24 15:59:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-24 15:59:08,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:08,188 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:08,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 15:59:08,188 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:08,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:08,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1612559463, now seen corresponding path program 13 times [2020-09-24 15:59:08,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:08,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719851666] [2020-09-24 15:59:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:08,327 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:08,327 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:08,328 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:08,328 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:08,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-24 15:59:08,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:08,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 15:59:08,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 15:59:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 15:59:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:08,357 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:08,357 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:08,357 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:08,358 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:08,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:08,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:08,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:08,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:08,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:08,482 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:08,482 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:08,482 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:08,483 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:08,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 15:59:08,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 15:59:08,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 15:59:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 15:59:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:08,657 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:08,658 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:08,658 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:08,658 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:08,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 15:59:08,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:08,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 15:59:08,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:08,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 15:59:08,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 15:59:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:08,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:08,812 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:08,812 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:08,812 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:08,812 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:08,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 15:59:08,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:08,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 15:59:08,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:08,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 15:59:08,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:08,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 15:59:08,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:08,932 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:08,933 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:08,933 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:08,933 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:08,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 15:59:08,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:08,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 15:59:08,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 15:59:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 15:59:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:08,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,028 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,028 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,029 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,029 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 15:59:09,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 15:59:09,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 15:59:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 15:59:09,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:09,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,114 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,114 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,114 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 15:59:09,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 15:59:09,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 15:59:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 15:59:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,188 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,189 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,189 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,190 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 15:59:09,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 15:59:09,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:59:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 15:59:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,255 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,255 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,256 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:59:09,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 15:59:09,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 15:59:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:59:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:09,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,317 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,317 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:09,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 15:59:09,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:59:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:59:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:09,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,371 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,371 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,371 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,372 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:09,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 15:59:09,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,414 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,415 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,415 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,415 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:09,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:59:09,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,455 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,456 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,456 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,457 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:59:09,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,491 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,492 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,493 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:09,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:59:09,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:09,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:09,524 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:09,524 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:09,525 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:09,525 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:09,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:09,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:59:09,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:09,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 28 proven. 481 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-09-24 15:59:09,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719851666] [2020-09-24 15:59:09,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:09,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 15:59:09,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973460861] [2020-09-24 15:59:09,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 15:59:09,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:09,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 15:59:09,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2020-09-24 15:59:09,638 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 20 states. [2020-09-24 15:59:09,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:09,903 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2020-09-24 15:59:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:59:09,904 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 120 [2020-09-24 15:59:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:09,906 INFO L225 Difference]: With dead ends: 94 [2020-09-24 15:59:09,906 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 15:59:09,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 15:59:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 15:59:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-09-24 15:59:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 15:59:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-09-24 15:59:09,923 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 120 [2020-09-24 15:59:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:09,924 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-09-24 15:59:09,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 15:59:09,924 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-09-24 15:59:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-24 15:59:09,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:09,927 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:09,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 15:59:09,927 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:09,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:09,928 INFO L82 PathProgramCache]: Analyzing trace with hash 996432753, now seen corresponding path program 14 times [2020-09-24 15:59:09,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:09,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955414980] [2020-09-24 15:59:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:10,117 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:10,118 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:10,118 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:10,118 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:10,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 15:59:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 15:59:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 15:59:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:59:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 15:59:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:10,152 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:10,152 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:10,153 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:10,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:10,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:59:10,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:10,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:59:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:10,298 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:10,298 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:10,299 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:10,299 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:10,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 15:59:10,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 15:59:10,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 15:59:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-24 15:59:10,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:10,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:10,491 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:10,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:10,492 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:10,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:10,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 15:59:10,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 15:59:10,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 15:59:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 15:59:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:10,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:10,652 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:10,652 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:10,653 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:10,653 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:10,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 15:59:10,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:10,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 15:59:10,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 15:59:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 15:59:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:10,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:10,783 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:10,784 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:10,784 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:10,784 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:10,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 15:59:10,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:10,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 15:59:10,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 15:59:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 15:59:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:10,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:10,908 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:10,909 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:10,909 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:10,909 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:10,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 15:59:10,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 15:59:10,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 15:59:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 15:59:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:10,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,026 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,027 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,027 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,027 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 15:59:11,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 15:59:11,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 15:59:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 15:59:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,130 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,130 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,130 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,131 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 15:59:11,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 15:59:11,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 15:59:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 15:59:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,211 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,211 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,211 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,212 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 15:59:11,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 15:59:11,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:59:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 15:59:11,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,278 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,278 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,278 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,279 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:59:11,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 15:59:11,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 15:59:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:59:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,338 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,339 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,339 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 15:59:11,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 15:59:11,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:59:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 15:59:11,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,392 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,392 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,392 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,393 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:59:11,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 15:59:11,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:59:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 15:59:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,438 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,438 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,439 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,439 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:11,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:59:11,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 15:59:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 15:59:11,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,480 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,480 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,480 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,481 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:11,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:59:11,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:59:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,517 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,518 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,518 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,518 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 15:59:11,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:59:11,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:59:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:59:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:11,550 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:11,552 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:11,552 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:11,552 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:11,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:11,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:59:11,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:11,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:11,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:59:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 69 proven. 531 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-09-24 15:59:11,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955414980] [2020-09-24 15:59:11,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:11,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 15:59:11,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287671327] [2020-09-24 15:59:11,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 15:59:11,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:11,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 15:59:11,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:59:11,700 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 21 states. [2020-09-24 15:59:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:11,923 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2020-09-24 15:59:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 15:59:11,924 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 128 [2020-09-24 15:59:11,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:11,925 INFO L225 Difference]: With dead ends: 99 [2020-09-24 15:59:11,925 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 15:59:11,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=446, Invalid=814, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 15:59:11,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 15:59:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-09-24 15:59:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 15:59:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-09-24 15:59:11,931 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 128 [2020-09-24 15:59:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:11,932 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-09-24 15:59:11,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 15:59:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-09-24 15:59:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 15:59:11,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:11,934 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:11,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 15:59:11,934 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:11,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:11,934 INFO L82 PathProgramCache]: Analyzing trace with hash 418248103, now seen corresponding path program 15 times [2020-09-24 15:59:11,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:11,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947926522] [2020-09-24 15:59:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:59:11,958 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:59:11,959 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:59:11,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 15:59:11,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:59:11 BoogieIcfgContainer [2020-09-24 15:59:11,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:59:11,996 INFO L168 Benchmark]: Toolchain (without parser) took 14688.39 ms. Allocated memory was 138.9 MB in the beginning and 482.3 MB in the end (delta: 343.4 MB). Free memory was 102.9 MB in the beginning and 305.7 MB in the end (delta: -202.7 MB). Peak memory consumption was 140.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:59:11,997 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:59:11,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.72 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 93.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:59:11,998 INFO L168 Benchmark]: Boogie Preprocessor took 35.77 ms. Allocated memory is still 138.9 MB. Free memory was 93.1 MB in the beginning and 91.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:59:11,999 INFO L168 Benchmark]: RCFGBuilder took 368.67 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 169.6 MB in the end (delta: -77.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:59:12,000 INFO L168 Benchmark]: TraceAbstraction took 13961.38 ms. Allocated memory was 201.9 MB in the beginning and 482.3 MB in the end (delta: 280.5 MB). Free memory was 169.6 MB in the beginning and 305.7 MB in the end (delta: -136.1 MB). Peak memory consumption was 144.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:59:12,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.72 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 93.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.77 ms. Allocated memory is still 138.9 MB. Free memory was 93.1 MB in the beginning and 91.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.67 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 169.6 MB in the end (delta: -77.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13961.38 ms. Allocated memory was 201.9 MB in the beginning and 482.3 MB in the end (delta: 280.5 MB). Free memory was 169.6 MB in the beginning and 305.7 MB in the end (delta: -136.1 MB). Peak memory consumption was 144.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 15; [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 15 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.8s, OverallIterations: 16, TraceHistogramMax: 16, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 274 SDtfs, 1043 SDslu, 1235 SDs, 0 SdLazy, 486 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=15, 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, 15 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 1216 NumberOfCodeBlocks, 1216 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1065 ConstructedInterpolants, 0 QuantifiedInterpolants, 245772 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 1330/4060 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...