/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_b5_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:58:50,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:58:50,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:58:50,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:58:50,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:58:50,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:58:50,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:58:50,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:58:50,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:58:50,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:58:50,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:58:50,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:58:50,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:58:50,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:58:50,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:58:50,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:58:50,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:58:50,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:58:50,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:58:50,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:58:50,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:58:50,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:58:50,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:58:50,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:58:50,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:58:50,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:58:50,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:58:50,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:58:50,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:58:50,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:58:50,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:58:50,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:58:50,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:58:50,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:58:50,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:58:50,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:58:50,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:58:50,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:58:50,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:58:50,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:58:50,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:58:50,621 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 15:58:50,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:58:50,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:58:50,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:58:50,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:58:50,665 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:58:50,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:58:50,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:58:50,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:58:50,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:58:50,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:58:50,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:58:50,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:58:50,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:58:50,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:58:50,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:58:50,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:58:50,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:58:50,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:58:50,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:58:50,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:58:50,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:58:50,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:58:50,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:58:50,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:58:50,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:58:50,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:58:50,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:58:50,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:58:50,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:58:50,670 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 15:58:51,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:58:51,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:58:51,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:58:51,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:58:51,137 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:58:51,139 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-09-24 15:58:51,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fddfd7d20/020f57b10d764dc393154e7e1e8f19fe/FLAG66ac6f110 [2020-09-24 15:58:51,731 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:58:51,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-09-24 15:58:51,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fddfd7d20/020f57b10d764dc393154e7e1e8f19fe/FLAG66ac6f110 [2020-09-24 15:58:52,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fddfd7d20/020f57b10d764dc393154e7e1e8f19fe [2020-09-24 15:58:52,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:58:52,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:58:52,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:52,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:58:52,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:58:52,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:52" (1/1) ... [2020-09-24 15:58:52,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49320105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52, skipping insertion in model container [2020-09-24 15:58:52,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:52" (1/1) ... [2020-09-24 15:58:52,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:58:52,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:58:52,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:52,334 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:58:52,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:52,367 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:58:52,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52 WrapperNode [2020-09-24 15:58:52,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:52,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:58:52,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:58:52,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:58:52,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52" (1/1) ... [2020-09-24 15:58:52,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52" (1/1) ... [2020-09-24 15:58:52,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52" (1/1) ... [2020-09-24 15:58:52,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52" (1/1) ... [2020-09-24 15:58:52,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52" (1/1) ... [2020-09-24 15:58:52,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52" (1/1) ... [2020-09-24 15:58:52,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52" (1/1) ... [2020-09-24 15:58:52,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:58:52,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:58:52,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:58:52,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:58:52,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52" (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 15:58:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:58:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:58:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 15:58:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:58:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:58:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:58:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 15:58:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:58:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:58:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:58:52,761 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:58:52,761 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:58:52,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:52 BoogieIcfgContainer [2020-09-24 15:58:52,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:58:52,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:58:52,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:58:52,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:58:52,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:58:52" (1/3) ... [2020-09-24 15:58:52,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7625d6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:52, skipping insertion in model container [2020-09-24 15:58:52,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:52" (2/3) ... [2020-09-24 15:58:52,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7625d6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:52, skipping insertion in model container [2020-09-24 15:58:52,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:52" (3/3) ... [2020-09-24 15:58:52,774 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2020-09-24 15:58:52,785 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:58:52,795 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:58:52,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:58:52,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:58:52,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:58:52,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:58:52,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:58:52,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:58:52,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:58:52,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:58:52,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:58:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-24 15:58:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 15:58:52,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:52,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:52,881 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:52,887 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times [2020-09-24 15:58:52,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:52,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167083585] [2020-09-24 15:58:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,029 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,030 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,030 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,030 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 15:58:53,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 15:58:53,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:58:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,108 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,109 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,109 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,109 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:53,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:53,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,125 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,125 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,125 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,126 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:53,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:53,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,149 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 15:58:53,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167083585] [2020-09-24 15:58:53,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:53,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:53,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942279284] [2020-09-24 15:58:53,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:53,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:53,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:53,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:53,196 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-24 15:58:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:53,301 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-09-24 15:58:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:53,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-24 15:58:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:53,316 INFO L225 Difference]: With dead ends: 44 [2020-09-24 15:58:53,317 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 15:58:53,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:58:53,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 15:58:53,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 15:58:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 15:58:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-24 15:58:53,372 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2020-09-24 15:58:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:53,373 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-24 15:58:53,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-24 15:58:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 15:58:53,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:53,376 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:53,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:58:53,377 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:53,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times [2020-09-24 15:58:53,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:53,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152154523] [2020-09-24 15:58:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,417 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:53,418 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:53,418 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:53,418 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 15:58:53,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:58:53,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 15:58:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,443 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,443 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,444 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,471 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:53,472 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:53,472 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:53,472 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:53,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:58:53,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 15:58:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,540 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,541 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,541 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,541 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:58:53,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152154523] [2020-09-24 15:58:53,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:53,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:53,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887610] [2020-09-24 15:58:53,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:53,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:53,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:53,591 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2020-09-24 15:58:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:53,650 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-09-24 15:58:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:53,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-24 15:58:53,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:53,652 INFO L225 Difference]: With dead ends: 49 [2020-09-24 15:58:53,652 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 15:58:53,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 15:58:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 15:58:53,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-09-24 15:58:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 15:58:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-24 15:58:53,661 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2020-09-24 15:58:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:53,662 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-24 15:58:53,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-24 15:58:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 15:58:53,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:53,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:53,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:58:53,664 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:53,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times [2020-09-24 15:58:53,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:53,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086325165] [2020-09-24 15:58:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,710 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:53,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:53,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:53,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 15:58:53,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 15:58:53,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 15:58:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 15:58:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,744 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,744 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:53,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:53,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:53,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,805 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:53,806 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,806 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,806 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:53,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 15:58:53,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,896 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,897 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,897 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,898 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:58:53,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:58:53,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086325165] [2020-09-24 15:58:53,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:53,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:58:53,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410331381] [2020-09-24 15:58:53,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:58:53,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:53,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:58:53,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:58:53,943 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2020-09-24 15:58:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:54,095 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-09-24 15:58:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:58:54,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-24 15:58:54,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:54,098 INFO L225 Difference]: With dead ends: 41 [2020-09-24 15:58:54,098 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 15:58:54,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 15:58:54,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-24 15:58:54,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 15:58:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-09-24 15:58:54,106 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2020-09-24 15:58:54,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:54,107 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-09-24 15:58:54,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:58:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-09-24 15:58:54,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 15:58:54,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:54,109 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, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:54,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:58:54,109 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:54,109 INFO L82 PathProgramCache]: Analyzing trace with hash 170302224, now seen corresponding path program 1 times [2020-09-24 15:58:54,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:54,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223346135] [2020-09-24 15:58:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,132 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,133 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,133 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,133 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:58:54,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:54,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 15:58:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,166 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,166 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,166 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:54,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:54,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:54,200 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:54,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:54,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 15:58:54,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 15:58:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 15:58:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,257 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:54,257 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,257 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,258 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:54,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 15:58:54,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:54,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:54,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,314 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,314 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,315 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,315 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:54,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 15:58:54,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223346135] [2020-09-24 15:58:54,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:54,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 15:58:54,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950137270] [2020-09-24 15:58:54,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 15:58:54,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:54,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 15:58:54,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 15:58:54,345 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 10 states. [2020-09-24 15:58:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:54,440 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-09-24 15:58:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:58:54,440 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-09-24 15:58:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:54,442 INFO L225 Difference]: With dead ends: 56 [2020-09-24 15:58:54,442 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 15:58:54,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:58:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 15:58:54,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-09-24 15:58:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 15:58:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-09-24 15:58:54,451 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 38 [2020-09-24 15:58:54,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:54,451 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-09-24 15:58:54,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 15:58:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-09-24 15:58:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 15:58:54,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:54,453 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:54,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:58:54,454 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:54,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:54,454 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 2 times [2020-09-24 15:58:54,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:54,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317448342] [2020-09-24 15:58:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,500 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:54,501 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:54,501 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:54,501 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 15:58:54,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 15:58:54,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 15:58:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 15:58:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,541 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,542 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,542 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:54,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:54,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,609 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:54,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:54,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 15:58:54,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:54,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,681 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:54,682 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,682 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:54,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:54,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,738 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,738 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,738 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,739 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:54,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:54,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:54,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 15:58:54,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317448342] [2020-09-24 15:58:54,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:54,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:58:54,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925752071] [2020-09-24 15:58:54,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:58:54,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:54,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:58:54,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:54,764 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2020-09-24 15:58:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:54,886 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-09-24 15:58:54,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:58:54,888 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-24 15:58:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:54,890 INFO L225 Difference]: With dead ends: 48 [2020-09-24 15:58:54,890 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 15:58:54,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-24 15:58:54,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 15:58:54,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 15:58:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 15:58:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-24 15:58:54,903 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 38 [2020-09-24 15:58:54,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:54,903 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-24 15:58:54,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:58:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-24 15:58:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 15:58:54,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:54,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:54,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:58:54,906 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:54,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:54,907 INFO L82 PathProgramCache]: Analyzing trace with hash -915726529, now seen corresponding path program 2 times [2020-09-24 15:58:54,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:54,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835400812] [2020-09-24 15:58:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,926 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,927 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,927 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 15:58:54,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 15:58:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:54,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,953 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,954 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,954 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,954 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:54,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:54,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:54,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:54,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,989 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:54,989 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:54,990 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:54,990 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:54,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 15:58:54,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 15:58:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 15:58:54,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,051 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:55,052 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,052 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:55,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 15:58:55,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,111 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:55,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,112 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,112 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:55,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:55,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:55,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:55,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:55,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,176 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,177 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,177 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,177 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:55,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:55,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 15:58:55,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835400812] [2020-09-24 15:58:55,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:55,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 15:58:55,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178201340] [2020-09-24 15:58:55,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 15:58:55,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:55,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 15:58:55,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:58:55,202 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 13 states. [2020-09-24 15:58:55,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:55,338 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-09-24 15:58:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:58:55,339 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-24 15:58:55,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:55,340 INFO L225 Difference]: With dead ends: 63 [2020-09-24 15:58:55,341 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 15:58:55,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:58:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 15:58:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-09-24 15:58:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 15:58:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-09-24 15:58:55,349 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 48 [2020-09-24 15:58:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:55,349 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-09-24 15:58:55,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 15:58:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-09-24 15:58:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 15:58:55,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:55,351 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:55,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:58:55,352 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:55,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:55,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1045014785, now seen corresponding path program 3 times [2020-09-24 15:58:55,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:55,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155493123] [2020-09-24 15:58:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,396 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:55,397 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:55,397 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:55,397 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 15:58:55,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 15:58:55,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:55,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 15:58:55,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:55,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,421 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,421 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,421 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:55,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,455 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:55,455 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,455 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,455 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:55,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 15:58:55,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 15:58:55,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,508 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:55,508 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,509 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,509 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:55,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:55,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,561 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:55,562 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,562 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,562 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:55,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:58:55,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:55,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,610 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,611 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:55,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:55,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 15:58:55,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155493123] [2020-09-24 15:58:55,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:55,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:58:55,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841852221] [2020-09-24 15:58:55,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:58:55,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:55,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:58:55,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:58:55,637 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 14 states. [2020-09-24 15:58:55,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:55,771 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-09-24 15:58:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:58:55,771 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-09-24 15:58:55,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:55,773 INFO L225 Difference]: With dead ends: 55 [2020-09-24 15:58:55,773 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 15:58:55,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:58:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 15:58:55,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 15:58:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 15:58:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-09-24 15:58:55,780 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 48 [2020-09-24 15:58:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:55,780 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-09-24 15:58:55,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:58:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-09-24 15:58:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 15:58:55,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:55,782 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:55,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:58:55,782 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:55,783 INFO L82 PathProgramCache]: Analyzing trace with hash 615088752, now seen corresponding path program 3 times [2020-09-24 15:58:55,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:55,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180307860] [2020-09-24 15:58:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,828 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:55,828 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:55,828 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:55,828 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 15:58:55,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 15:58:55,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:55,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 15:58:55,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:55,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,844 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,845 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,845 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,845 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:55,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:55,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,891 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:55,892 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:55,892 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:55,892 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 15:58:55,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 15:58:55,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:55,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 15:58:55,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:55,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,963 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:55,963 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,963 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,964 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:55,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 15:58:55,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 15:58:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,018 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:56,018 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,019 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,019 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:56,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 15:58:56,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:56,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,067 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:56,067 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,067 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,068 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:56,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:56,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,111 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:56,111 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,112 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,112 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:56,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 15:58:56,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180307860] [2020-09-24 15:58:56,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:56,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:58:56,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990149024] [2020-09-24 15:58:56,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:58:56,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:56,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:58:56,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:58:56,143 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 14 states. [2020-09-24 15:58:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:56,257 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-09-24 15:58:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:58:56,258 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-09-24 15:58:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:56,259 INFO L225 Difference]: With dead ends: 70 [2020-09-24 15:58:56,259 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 15:58:56,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:58:56,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 15:58:56,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-09-24 15:58:56,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 15:58:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 15:58:56,266 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 58 [2020-09-24 15:58:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:56,267 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 15:58:56,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:58:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 15:58:56,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 15:58:56,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:56,269 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:56,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:58:56,269 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:56,270 INFO L82 PathProgramCache]: Analyzing trace with hash 485800496, now seen corresponding path program 4 times [2020-09-24 15:58:56,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:56,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592126896] [2020-09-24 15:58:56,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,318 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:56,318 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:56,318 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:56,319 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 15:58:56,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 15:58:56,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 15:58:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 15:58:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 15:58:56,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,343 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:56,343 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,343 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:56,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:56,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:56,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,397 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:56,397 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,397 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,397 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 15:58:56,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 15:58:56,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:58:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 15:58:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,467 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:56,468 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:56,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 15:58:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 15:58:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,538 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:56,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,539 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,539 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:56,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 15:58:56,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:56,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:56,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,609 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:56,609 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:56,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:56,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:56,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,673 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:56,673 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,673 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,673 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:56,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:56,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 15:58:56,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592126896] [2020-09-24 15:58:56,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:56,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 15:58:56,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565241642] [2020-09-24 15:58:56,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 15:58:56,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:56,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 15:58:56,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:58:56,730 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 17 states. [2020-09-24 15:58:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:56,902 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-09-24 15:58:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 15:58:56,903 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 15:58:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:56,904 INFO L225 Difference]: With dead ends: 62 [2020-09-24 15:58:56,904 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 15:58:56,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-09-24 15:58:56,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 15:58:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-24 15:58:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 15:58:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-09-24 15:58:56,911 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 58 [2020-09-24 15:58:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:56,911 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-09-24 15:58:56,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 15:58:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-09-24 15:58:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 15:58:56,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:56,913 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:56,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 15:58:56,913 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:56,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1809338273, now seen corresponding path program 4 times [2020-09-24 15:58:56,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:56,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109509792] [2020-09-24 15:58:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,933 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:56,934 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,934 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 15:58:56,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:56,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 15:58:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:58:56,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,960 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:56,960 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,960 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,960 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:56,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:56,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:56,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,012 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:57,013 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:57,013 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:57,013 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:58:57,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 15:58:57,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 15:58:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 15:58:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 15:58:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,090 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:57,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:57,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 15:58:57,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 15:58:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:58:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 15:58:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,163 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:57,163 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:57,164 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:57,164 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:57,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 15:58:57,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 15:58:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:57,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:57,232 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:57,232 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:57,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 15:58:57,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:57,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:57,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:57,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,302 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:57,302 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:57,303 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:57,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:57,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:57,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,360 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:57,360 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:57,360 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:57,361 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:57,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:57,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 15:58:57,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109509792] [2020-09-24 15:58:57,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:57,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 15:58:57,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81678009] [2020-09-24 15:58:57,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 15:58:57,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:57,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 15:58:57,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-09-24 15:58:57,404 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 19 states. [2020-09-24 15:58:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:57,584 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-09-24 15:58:57,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 15:58:57,585 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 68 [2020-09-24 15:58:57,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:57,587 INFO L225 Difference]: With dead ends: 76 [2020-09-24 15:58:57,587 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 15:58:57,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-09-24 15:58:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 15:58:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-09-24 15:58:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 15:58:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-09-24 15:58:57,595 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 68 [2020-09-24 15:58:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:57,595 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-09-24 15:58:57,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 15:58:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-09-24 15:58:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 15:58:57,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:57,597 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:57,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 15:58:57,597 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:57,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1938626529, now seen corresponding path program 5 times [2020-09-24 15:58:57,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:57,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302223416] [2020-09-24 15:58:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,674 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:57,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 15:58:57,674 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 15:58:57,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 15:58:57,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 15:58:57,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:58:57,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 15:58:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 15:58:57,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,708 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:57,708 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:57,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:57,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:57,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:57,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:57,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:58:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:57,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:57,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:57,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 15:58:57,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 15:58:57,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 15:58:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 15:58:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,851 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:57,851 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:57,851 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:57,851 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 15:58:57,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 15:58:57,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:58:57,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 15:58:57,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:57,931 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:57,932 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:57,932 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:57,932 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:57,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:57,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 15:58:57,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:57,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:57,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 15:58:57,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:57,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:58,003 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:58,003 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:58,003 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:58,004 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:58,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:58:58,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:58:58,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:58,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:58,070 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 15:58:58,070 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:58,070 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:58,071 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:58,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 15:58:58,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:58,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:58:58,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:58,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:58,126 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:58,126 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:58,127 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:58,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:58,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:58,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:58,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:58,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 15:58:58,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302223416] [2020-09-24 15:58:58,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:58,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 15:58:58,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177631907] [2020-09-24 15:58:58,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 15:58:58,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:58,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 15:58:58,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-09-24 15:58:58,161 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 20 states. [2020-09-24 15:58:58,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:58,370 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-09-24 15:58:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 15:58:58,370 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-09-24 15:58:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:58,371 INFO L225 Difference]: With dead ends: 62 [2020-09-24 15:58:58,371 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:58:58,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2020-09-24 15:58:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:58:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:58:58,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:58:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:58:58,373 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2020-09-24 15:58:58,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:58,373 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:58:58,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 15:58:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:58:58,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:58:58,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 15:58:58,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:58:58,406 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 15:58:58,406 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:58,406 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:58,406 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:58:58,407 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:58:58,407 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:58:58,407 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-24 15:58:58,407 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-24 15:58:58,407 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-24 15:58:58,407 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 15:58:58,407 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-24 15:58:58,408 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-24 15:58:58,408 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 15:58:58,408 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 15:58:58,408 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-09-24 15:58:58,408 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 15:58:58,408 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 15:58:58,408 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 15:58:58,408 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-09-24 15:58:58,409 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-24 15:58:58,409 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-24 15:58:58,409 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 15:58:58,409 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 15:58:58,409 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-24 15:58:58,409 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-09-24 15:58:58,409 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 15:58:58,409 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 15:58:58,410 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 15:58:58,410 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-24 15:58:58,410 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-09-24 15:58:58,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:58:58 BoogieIcfgContainer [2020-09-24 15:58:58,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:58:58,420 INFO L168 Benchmark]: Toolchain (without parser) took 6330.05 ms. Allocated memory was 146.8 MB in the beginning and 285.2 MB in the end (delta: 138.4 MB). Free memory was 102.3 MB in the beginning and 121.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:58,421 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 15:58:58,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.67 ms. Allocated memory is still 146.8 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:58,423 INFO L168 Benchmark]: Boogie Preprocessor took 28.32 ms. Allocated memory is still 146.8 MB. Free memory was 92.1 MB in the beginning and 90.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:58,424 INFO L168 Benchmark]: RCFGBuilder took 368.27 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 90.7 MB in the beginning and 170.8 MB in the end (delta: -80.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:58,424 INFO L168 Benchmark]: TraceAbstraction took 5650.64 ms. Allocated memory was 203.4 MB in the beginning and 285.2 MB in the end (delta: 81.8 MB). Free memory was 170.2 MB in the beginning and 121.6 MB in the end (delta: 48.6 MB). Peak memory consumption was 130.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:58,428 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.67 ms. Allocated memory is still 146.8 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.32 ms. Allocated memory is still 146.8 MB. Free memory was 92.1 MB in the beginning and 90.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.27 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 90.7 MB in the beginning and 170.8 MB in the end (delta: -80.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5650.64 ms. Allocated memory was 203.4 MB in the beginning and 285.2 MB in the end (delta: 81.8 MB). Free memory was 170.2 MB in the beginning and 121.6 MB in the end (delta: 48.6 MB). Peak memory consumption was 130.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 277 SDtfs, 149 SDslu, 1735 SDs, 0 SdLazy, 604 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 306 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 487 ConstructedInterpolants, 0 QuantifiedInterpolants, 52009 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 210/510 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 correct! Received shutdown request...