/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --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/Ackermann04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:37:46,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:37:46,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:37:46,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:37:46,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:37:46,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:37:46,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:37:46,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:37:46,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:37:46,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:37:46,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:37:46,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:37:46,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:37:46,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:37:46,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:37:46,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:37:46,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:37:46,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:37:46,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:37:46,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:37:46,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:37:46,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:37:46,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:37:46,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:37:46,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:37:46,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:37:46,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:37:46,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:37:46,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:37:46,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:37:46,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:37:46,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:37:46,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:37:46,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:37:46,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:37:46,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:37:46,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:37:46,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:37:46,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:37:46,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:37:46,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:37:46,724 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 22:37:46,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:37:46,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:37:46,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:37:46,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:37:46,754 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:37:46,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:37:46,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:37:46,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:37:46,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:37:46,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:37:46,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:37:46,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:37:46,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:37:46,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:37:46,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:37:46,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:37:46,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:37:46,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:37:46,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:37:46,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:37:46,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:37:46,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:37:46,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:37:46,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:37:46,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:37:46,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:37:46,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:37:46,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:37:46,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:37:46,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:37:47,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:37:47,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:37:47,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:37:47,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:37:47,327 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:37:47,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-24 22:37:47,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2648b1e12/8a3ab9af224140e9b31cf7fa5026259e/FLAGffefbaba4 [2020-09-24 22:37:47,954 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:37:47,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-24 22:37:47,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2648b1e12/8a3ab9af224140e9b31cf7fa5026259e/FLAGffefbaba4 [2020-09-24 22:37:48,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2648b1e12/8a3ab9af224140e9b31cf7fa5026259e [2020-09-24 22:37:48,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:37:48,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:37:48,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:37:48,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:37:48,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:37:48,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:48" (1/1) ... [2020-09-24 22:37:48,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48, skipping insertion in model container [2020-09-24 22:37:48,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:48" (1/1) ... [2020-09-24 22:37:48,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:37:48,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:37:48,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:37:48,628 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:37:48,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:37:48,668 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:37:48,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48 WrapperNode [2020-09-24 22:37:48,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:37:48,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:37:48,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:37:48,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:37:48,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48" (1/1) ... [2020-09-24 22:37:48,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48" (1/1) ... [2020-09-24 22:37:48,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48" (1/1) ... [2020-09-24 22:37:48,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48" (1/1) ... [2020-09-24 22:37:48,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48" (1/1) ... [2020-09-24 22:37:48,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48" (1/1) ... [2020-09-24 22:37:48,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48" (1/1) ... [2020-09-24 22:37:48,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:37:48,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:37:48,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:37:48,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:37:48,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48" (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 22:37:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:37:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:37:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-24 22:37:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:37:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:37:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:37:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-24 22:37:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:37:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:37:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:37:49,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:37:49,158 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:37:49,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:49 BoogieIcfgContainer [2020-09-24 22:37:49,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:37:49,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:37:49,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:37:49,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:37:49,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:37:48" (1/3) ... [2020-09-24 22:37:49,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9d199d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:49, skipping insertion in model container [2020-09-24 22:37:49,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:48" (2/3) ... [2020-09-24 22:37:49,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9d199d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:49, skipping insertion in model container [2020-09-24 22:37:49,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:49" (3/3) ... [2020-09-24 22:37:49,180 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2020-09-24 22:37:49,194 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:37:49,205 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:37:49,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:37:49,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:37:49,282 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:37:49,283 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:37:49,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:37:49,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:37:49,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:37:49,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:37:49,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:37:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 22:37:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 22:37:49,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:49,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:49,328 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:49,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:49,337 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-24 22:37:49,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:49,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321636132] [2020-09-24 22:37:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:49,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:49,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:37:49,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:49,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 22:37:49,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:37:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:37:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:37:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:37:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:49,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:49,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:37:49,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:37:49,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:49,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:37:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:49,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:49,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:37:49,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 22:37:49,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:37:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:37:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:49,892 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 22:37:49,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321636132] [2020-09-24 22:37:49,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:37:49,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:37:49,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373807049] [2020-09-24 22:37:49,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:37:49,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:49,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:37:49,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:37:49,927 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-09-24 22:37:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:50,103 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-09-24 22:37:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:37:50,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-24 22:37:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:50,121 INFO L225 Difference]: With dead ends: 88 [2020-09-24 22:37:50,121 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 22:37:50,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:37:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 22:37:50,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 22:37:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 22:37:50,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-24 22:37:50,193 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2020-09-24 22:37:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:50,194 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-24 22:37:50,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:37:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-24 22:37:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:37:50,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:50,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:50,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:37:50,200 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:50,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:50,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-24 22:37:50,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:50,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552504151] [2020-09-24 22:37:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:50,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:50,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 22:37:50,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:37:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-24 22:37:50,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:37:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:37:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:37:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:37:50,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:50,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:50,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:37:50,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:50,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:37:50,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:50,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:37:50,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:37:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:50,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:50,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:37:50,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 22:37:50,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:37:50,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:50,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:37:50,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:37:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:50,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:50,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:37:50,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 22:37:50,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:37:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:37:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:37:50,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552504151] [2020-09-24 22:37:50,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:37:50,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 22:37:50,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314901549] [2020-09-24 22:37:50,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:37:50,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:50,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:37:50,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:37:50,956 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-09-24 22:37:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:51,090 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-09-24 22:37:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:37:51,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 22:37:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:51,095 INFO L225 Difference]: With dead ends: 83 [2020-09-24 22:37:51,095 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 22:37:51,099 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 22:37:51,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 22:37:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 22:37:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 22:37:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-09-24 22:37:51,124 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 34 [2020-09-24 22:37:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:51,124 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-09-24 22:37:51,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:37:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-09-24 22:37:51,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 22:37:51,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:51,131 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:51,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:37:51,134 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:51,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:51,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times [2020-09-24 22:37:51,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:51,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560997414] [2020-09-24 22:37:51,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:51,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:54,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:54,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:37:54,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:37:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3513 [2020-09-24 22:37:54,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:37:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:37:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 22:37:54,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:54,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:54,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:54,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:37:54,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:37:54,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:54,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:37:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:54,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:54,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:37:54,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:54,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 22:37:54,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:37:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:37:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:54,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:37:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:54,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:54,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:37:54,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:54,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 22:37:54,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:37:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:37:54,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:54,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:37:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:54,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:54,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:37:54,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:54,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:37:54,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:37:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:37:54,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:37:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:54,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:54,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:37:54,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:37:54,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:37:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:54,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:37:54,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 22:37:54,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560997414] [2020-09-24 22:37:54,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:37:54,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:37:54,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148032057] [2020-09-24 22:37:54,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:37:54,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:37:54,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:37:54,998 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 7 states. [2020-09-24 22:37:55,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:55,140 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2020-09-24 22:37:55,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:37:55,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-09-24 22:37:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:55,145 INFO L225 Difference]: With dead ends: 75 [2020-09-24 22:37:55,146 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 22:37:55,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:37:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 22:37:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-24 22:37:55,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 22:37:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2020-09-24 22:37:55,162 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 53 [2020-09-24 22:37:55,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:55,175 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2020-09-24 22:37:55,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:37:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-09-24 22:37:55,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 22:37:55,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:55,183 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:55,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:37:55,183 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:55,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1817818703, now seen corresponding path program 2 times [2020-09-24 22:37:55,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:55,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529603339] [2020-09-24 22:37:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:58,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:58,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 22:37:58,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:37:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2932 [2020-09-24 22:37:58,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:37:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:37:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:37:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:58,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:58,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:37:58,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:37:58,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:58,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:37:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:58,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:01,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:01,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 22:38:01,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3075 [2020-09-24 22:38:01,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 22:38:01,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:01,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:01,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:01,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:01,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:01,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 22:38:01,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:38:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:01,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:01,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:01,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:38:01,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:01,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:38:01,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:01,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:01,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:01,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:01,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:01,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:01,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:38:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:01,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:01,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:01,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:01,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 22:38:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:01,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:01,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:01,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:01,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:38:01,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:01,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 22:38:01,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529603339] [2020-09-24 22:38:01,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:01,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:38:01,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368738813] [2020-09-24 22:38:01,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:38:01,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:01,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:38:01,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:01,464 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand 7 states. [2020-09-24 22:38:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:01,598 INFO L93 Difference]: Finished difference Result 128 states and 185 transitions. [2020-09-24 22:38:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:38:01,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-09-24 22:38:01,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:01,602 INFO L225 Difference]: With dead ends: 128 [2020-09-24 22:38:01,603 INFO L226 Difference]: Without dead ends: 122 [2020-09-24 22:38:01,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:38:01,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-24 22:38:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-24 22:38:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-24 22:38:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 179 transitions. [2020-09-24 22:38:01,628 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 179 transitions. Word has length 72 [2020-09-24 22:38:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:01,628 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 179 transitions. [2020-09-24 22:38:01,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:38:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 179 transitions. [2020-09-24 22:38:01,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 22:38:01,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:01,635 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:01,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:38:01,635 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:01,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1778048969, now seen corresponding path program 3 times [2020-09-24 22:38:01,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:01,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659337807] [2020-09-24 22:38:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:06,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:06,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 22:38:06,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 22:38:06,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:38:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 22:38:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 22:38:06,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:06,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:06,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:06,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:06,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:06,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:06,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:06,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:38:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:06,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:11,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:11,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 22:38:11,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:11,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:38:11,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:11,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:38:11,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 22:38:11,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 22:38:11,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:11,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:15,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:15,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 22:38:15,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:15,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3384 [2020-09-24 22:38:15,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:38:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:38:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:38:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:15,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:15,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:15,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:15,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:38:15,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 22:38:15,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 22:38:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 22:38:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:15,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:15,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:15,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 22:38:15,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:38:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:38:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:15,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:15,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:38:15,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 22:38:15,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:38:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 22:38:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:15,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:15,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:15,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:15,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:38:15,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:38:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:15,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:15,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:15,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:15,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:38:15,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:15,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 22:38:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:15,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:15,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:38:15,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:15,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 22:38:15,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:38:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 22:38:15,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:15,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:15,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:15,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 22:38:15,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:15,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:15,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 22:38:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:15,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:38:15,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 22:38:15,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:38:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 22:38:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:16,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:16,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:16,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:16,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:16,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:38:16,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 91 proven. 89 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-09-24 22:38:16,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659337807] [2020-09-24 22:38:16,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:16,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:38:16,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236202803] [2020-09-24 22:38:16,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:38:16,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:16,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:38:16,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:38:16,089 INFO L87 Difference]: Start difference. First operand 122 states and 179 transitions. Second operand 14 states. [2020-09-24 22:38:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:16,602 INFO L93 Difference]: Finished difference Result 372 states and 738 transitions. [2020-09-24 22:38:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:38:16,603 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 121 [2020-09-24 22:38:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:16,609 INFO L225 Difference]: With dead ends: 372 [2020-09-24 22:38:16,610 INFO L226 Difference]: Without dead ends: 263 [2020-09-24 22:38:16,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-09-24 22:38:16,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-24 22:38:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 215. [2020-09-24 22:38:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-24 22:38:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 400 transitions. [2020-09-24 22:38:16,663 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 400 transitions. Word has length 121 [2020-09-24 22:38:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:16,667 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 400 transitions. [2020-09-24 22:38:16,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:38:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 400 transitions. [2020-09-24 22:38:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 22:38:16,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:16,682 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 12, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:16,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:38:16,682 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:16,683 INFO L82 PathProgramCache]: Analyzing trace with hash 122024464, now seen corresponding path program 4 times [2020-09-24 22:38:16,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:16,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214120961] [2020-09-24 22:38:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:16,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:16,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:17,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:18,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:18,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:20,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:21,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:21,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-24 22:38:21,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 22:38:21,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 22:38:21,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-09-24 22:38:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:21,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:21,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:21,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:21,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:21,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:21,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:38:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:21,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:21,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:22,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:25,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:25,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:25,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:26,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:26,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-24 22:38:26,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:38:26,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 22:38:26,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-24 22:38:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:26,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:26,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:28,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:28,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:31,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:31,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 22:38:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:38:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:38:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-24 22:38:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:31,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:31,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:38:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:38:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:31,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:31,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:31,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:31,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:38:31,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:31,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:31,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:31,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:31,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:38:31,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:38:31,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:31,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:31,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:31,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:31,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:31,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:31,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:31,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:31,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:38:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:31,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:31,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:31,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:31,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:31,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:31,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 22:38:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:31,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:31,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:33,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:36,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:36,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 22:38:36,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:38:36,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 22:38:36,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:36,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:36,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 22:38:36,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:36,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:36,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:36,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:38:36,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:36,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:38:36,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:36,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:36,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:36,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:38:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:37,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:37,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:37,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-24 22:38:37,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:38:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:37,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:37,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:38:37,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:37,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:38:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:37,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:38:37,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:37,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 22:38:37,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:37,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:37,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:38:37,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:37,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:37,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:37,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:37,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:37,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:38:37,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 22:38:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:37,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:38:37,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:38:37,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 22:38:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:37,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:37,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:37,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:37,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:38:37,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:37,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:37,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:38:37,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:38:37,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:38:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:37,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:37,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:37,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:37,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:38:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:37,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:37,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:37,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:37,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:37,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 260 proven. 130 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2020-09-24 22:38:37,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214120961] [2020-09-24 22:38:37,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:37,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:38:37,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652166848] [2020-09-24 22:38:37,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:38:37,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:37,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:38:37,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:38:37,809 INFO L87 Difference]: Start difference. First operand 215 states and 400 transitions. Second operand 8 states. [2020-09-24 22:38:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:37,937 INFO L93 Difference]: Finished difference Result 321 states and 662 transitions. [2020-09-24 22:38:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:37,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-09-24 22:38:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:37,940 INFO L225 Difference]: With dead ends: 321 [2020-09-24 22:38:37,940 INFO L226 Difference]: Without dead ends: 115 [2020-09-24 22:38:37,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:38:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-24 22:38:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2020-09-24 22:38:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 22:38:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 149 transitions. [2020-09-24 22:38:37,959 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 149 transitions. Word has length 198 [2020-09-24 22:38:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:37,959 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 149 transitions. [2020-09-24 22:38:37,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:38:37,960 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 149 transitions. [2020-09-24 22:38:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 22:38:37,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:37,962 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:37,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:38:37,963 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:37,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1276982865, now seen corresponding path program 5 times [2020-09-24 22:38:37,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:37,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188922985] [2020-09-24 22:38:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:38,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking...