/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:14:45,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:14:45,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:14:45,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:14:45,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:14:45,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:14:45,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:14:45,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:14:45,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:14:45,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:14:45,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:14:45,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:14:45,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:14:45,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:14:45,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:14:45,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:14:45,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:14:45,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:14:45,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:14:45,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:14:45,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:14:45,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:14:45,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:14:45,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:14:45,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:14:45,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:14:45,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:14:45,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:14:45,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:14:45,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:14:45,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:14:45,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:14:45,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:14:45,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:14:45,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:14:45,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:14:45,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:14:45,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:14:45,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:14:45,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:14:45,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:14:45,702 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 [2020-10-12 18:14:45,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:14:45,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:14:45,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:14:45,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:14:45,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:14:45,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:14:45,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:14:45,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:14:45,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:14:45,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:14:45,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:14:45,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:14:45,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:14:45,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:14:45,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:14:45,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:14:45,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:14:45,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:14:45,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:14:45,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:14:45,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:14:45,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:14:45,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:14:45,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:14:45,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:14:45,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:14:45,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:14:45,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:14:45,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:14:45,730 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:14:46,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:14:46,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:14:46,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:14:46,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:14:46,081 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:14:46,082 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-10-12 18:14:46,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e07ee73f/2f7075a9e1184c4ba42b5a4ba2976f53/FLAGfa7b6e03f [2020-10-12 18:14:46,599 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:14:46,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-10-12 18:14:46,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e07ee73f/2f7075a9e1184c4ba42b5a4ba2976f53/FLAGfa7b6e03f [2020-10-12 18:14:47,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e07ee73f/2f7075a9e1184c4ba42b5a4ba2976f53 [2020-10-12 18:14:47,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:14:47,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:14:47,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:14:47,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:14:47,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:14:47,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:14:47" (1/1) ... [2020-10-12 18:14:47,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6752e30a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47, skipping insertion in model container [2020-10-12 18:14:47,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:14:47" (1/1) ... [2020-10-12 18:14:47,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:14:47,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:14:47,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:14:47,268 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:14:47,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:14:47,300 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:14:47,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47 WrapperNode [2020-10-12 18:14:47,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:14:47,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:14:47,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:14:47,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:14:47,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47" (1/1) ... [2020-10-12 18:14:47,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47" (1/1) ... [2020-10-12 18:14:47,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47" (1/1) ... [2020-10-12 18:14:47,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47" (1/1) ... [2020-10-12 18:14:47,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47" (1/1) ... [2020-10-12 18:14:47,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47" (1/1) ... [2020-10-12 18:14:47,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47" (1/1) ... [2020-10-12 18:14:47,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:14:47,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:14:47,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:14:47,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:14:47,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47" (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 [2020-10-12 18:14:47,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:14:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:14:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-10-12 18:14:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:14:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:14:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:14:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-10-12 18:14:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:14:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:14:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:14:47,679 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:14:47,680 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 18:14:47,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:14:47 BoogieIcfgContainer [2020-10-12 18:14:47,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:14:47,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:14:47,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:14:47,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:14:47,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:14:47" (1/3) ... [2020-10-12 18:14:47,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78668c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:14:47, skipping insertion in model container [2020-10-12 18:14:47,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:47" (2/3) ... [2020-10-12 18:14:47,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78668c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:14:47, skipping insertion in model container [2020-10-12 18:14:47,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:14:47" (3/3) ... [2020-10-12 18:14:47,694 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-10-12 18:14:47,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:14:47,711 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:14:47,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:14:47,758 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:14:47,759 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:14:47,759 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:14:47,759 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:14:47,760 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:14:47,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:14:47,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:14:47,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:14:47,807 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-12 18:14:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 18:14:47,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:47,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:47,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:47,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:47,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1001932622, now seen corresponding path program 1 times [2020-10-12 18:14:47,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:47,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512713399] [2020-10-12 18:14:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:48,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:48,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 18:14:48,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:48,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-12 18:14:48,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:14:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:14:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:14:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:14:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:48,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:48,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:14:48,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:48,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:48,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:14:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:48,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:48,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:14:48,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:48,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 18:14:48,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:14:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:14:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:14:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:14:48,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512713399] [2020-10-12 18:14:48,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:14:48,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 18:14:48,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111431857] [2020-10-12 18:14:48,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:14:48,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:48,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:14:48,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:14:48,444 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-10-12 18:14:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:48,550 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-10-12 18:14:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:14:48,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-12 18:14:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:48,562 INFO L225 Difference]: With dead ends: 40 [2020-10-12 18:14:48,563 INFO L226 Difference]: Without dead ends: 24 [2020-10-12 18:14:48,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:14:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-12 18:14:48,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-12 18:14:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 18:14:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-10-12 18:14:48,612 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-10-12 18:14:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:48,613 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-10-12 18:14:48,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:14:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-10-12 18:14:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 18:14:48,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:48,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:48,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:14:48,616 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:48,616 INFO L82 PathProgramCache]: Analyzing trace with hash -423841111, now seen corresponding path program 1 times [2020-10-12 18:14:48,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:48,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360373069] [2020-10-12 18:14:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:48,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:48,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:14:48,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 18:14:48,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:48,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:14:48,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:14:48,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 18:14:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:48,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:48,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:48,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:48,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:48,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:14:48,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:48,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:48,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:14:48,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:48,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 18:14:48,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:14:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:14:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:14:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:14:48,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360373069] [2020-10-12 18:14:48,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:14:48,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 18:14:48,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426525407] [2020-10-12 18:14:48,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:14:48,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:48,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:14:48,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:14:48,918 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-10-12 18:14:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:49,039 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-10-12 18:14:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:14:49,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-12 18:14:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:49,042 INFO L225 Difference]: With dead ends: 30 [2020-10-12 18:14:49,042 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 18:14:49,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:14:49,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 18:14:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-12 18:14:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 18:14:49,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-10-12 18:14:49,052 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2020-10-12 18:14:49,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:49,052 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-10-12 18:14:49,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:14:49,052 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-10-12 18:14:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 18:14:49,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:49,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:49,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:14:49,054 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:49,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1280495258, now seen corresponding path program 1 times [2020-10-12 18:14:49,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:49,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422223145] [2020-10-12 18:14:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:49,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 18:14:49,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:14:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-12 18:14:49,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:14:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 18:14:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:14:49,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:49,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:49,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:14:49,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:14:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:49,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:14:49,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 18:14:49,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:14:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:14:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:14:49,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:49,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:49,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:14:49,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:14:49,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:14:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:14:49,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 18:14:49,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422223145] [2020-10-12 18:14:49,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:14:49,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 18:14:49,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257895596] [2020-10-12 18:14:49,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:14:49,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:49,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:14:49,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:14:49,563 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 8 states. [2020-10-12 18:14:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:49,738 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2020-10-12 18:14:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:14:49,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-12 18:14:49,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:49,740 INFO L225 Difference]: With dead ends: 35 [2020-10-12 18:14:49,741 INFO L226 Difference]: Without dead ends: 31 [2020-10-12 18:14:49,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:14:49,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-12 18:14:49,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2020-10-12 18:14:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 18:14:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-10-12 18:14:49,751 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 23 [2020-10-12 18:14:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:49,752 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-10-12 18:14:49,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:14:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-10-12 18:14:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 18:14:49,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:49,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:49,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:14:49,754 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:49,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1668712292, now seen corresponding path program 1 times [2020-10-12 18:14:49,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:49,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238975161] [2020-10-12 18:14:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:49,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:49,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 18:14:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:14:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 18:14:49,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:14:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:14:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:14:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:49,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:49,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:14:49,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:49,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:49,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:49,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:50,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:14:50,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:50,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 18:14:50,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:14:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:14:50,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:50,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:50,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:14:50,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:14:50,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:14:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:14:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 18:14:50,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238975161] [2020-10-12 18:14:50,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:14:50,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 18:14:50,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037608545] [2020-10-12 18:14:50,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:14:50,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:14:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:14:50,103 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 9 states. [2020-10-12 18:14:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:50,270 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-10-12 18:14:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:14:50,271 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-12 18:14:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:50,272 INFO L225 Difference]: With dead ends: 39 [2020-10-12 18:14:50,273 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 18:14:50,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:14:50,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 18:14:50,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-12 18:14:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 18:14:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-10-12 18:14:50,283 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 23 [2020-10-12 18:14:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:50,284 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-10-12 18:14:50,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:14:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-10-12 18:14:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 18:14:50,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:50,286 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] [2020-10-12 18:14:50,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:14:50,286 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:50,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1139697511, now seen corresponding path program 1 times [2020-10-12 18:14:50,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:50,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606919063] [2020-10-12 18:14:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:50,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:50,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:14:50,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:14:50,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-12 18:14:50,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:14:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:14:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 18:14:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:50,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:50,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:14:50,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:50,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:50,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:50,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:14:50,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 18:14:50,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:14:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:14:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:50,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:50,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:14:50,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:50,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:14:50,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:14:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:14:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 18:14:50,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606919063] [2020-10-12 18:14:50,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:14:50,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:14:50,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351963410] [2020-10-12 18:14:50,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:14:50,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:50,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:14:50,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:14:50,811 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 8 states. [2020-10-12 18:14:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:50,924 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2020-10-12 18:14:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:14:50,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-12 18:14:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:50,926 INFO L225 Difference]: With dead ends: 39 [2020-10-12 18:14:50,927 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 18:14:50,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:14:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 18:14:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-10-12 18:14:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 18:14:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-12 18:14:50,934 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 24 [2020-10-12 18:14:50,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:50,935 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-12 18:14:50,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:14:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-12 18:14:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 18:14:50,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:50,936 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] [2020-10-12 18:14:50,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:14:50,937 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:50,937 INFO L82 PathProgramCache]: Analyzing trace with hash 99153721, now seen corresponding path program 1 times [2020-10-12 18:14:50,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:50,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030732641] [2020-10-12 18:14:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:50,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:51,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:14:51,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:14:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-12 18:14:51,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:14:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:14:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 18:14:51,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:51,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:51,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:51,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:51,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:14:51,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:51,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:51,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:14:51,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 18:14:51,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:14:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:14:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:51,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:51,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:14:51,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:14:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:14:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:14:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 18:14:51,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030732641] [2020-10-12 18:14:51,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:14:51,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:14:51,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918326061] [2020-10-12 18:14:51,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:14:51,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:51,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:14:51,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:14:51,461 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 8 states. [2020-10-12 18:14:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:51,575 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2020-10-12 18:14:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:14:51,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-12 18:14:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:51,577 INFO L225 Difference]: With dead ends: 39 [2020-10-12 18:14:51,577 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 18:14:51,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:14:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 18:14:51,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-10-12 18:14:51,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 18:14:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-12 18:14:51,585 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 24 [2020-10-12 18:14:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:51,586 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-12 18:14:51,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:14:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-12 18:14:51,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 18:14:51,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:51,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:51,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:14:51,588 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:51,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:51,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1008405900, now seen corresponding path program 1 times [2020-10-12 18:14:51,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:51,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107595135] [2020-10-12 18:14:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:51,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:14:51,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 18:14:51,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:14:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 18:14:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:14:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:51,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:51,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:14:51,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:51,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 18:14:51,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 18:14:51,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:14:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 18:14:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:14:51,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:51,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:51,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:52,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:52,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:14:52,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 18:14:52,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:14:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:14:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:14:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:52,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:52,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:14:52,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:52,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:14:52,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:14:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:14:52,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 18:14:52,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107595135] [2020-10-12 18:14:52,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:14:52,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 18:14:52,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793766341] [2020-10-12 18:14:52,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:14:52,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:52,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:14:52,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:14:52,149 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states. [2020-10-12 18:14:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:52,404 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2020-10-12 18:14:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:14:52,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-12 18:14:52,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:52,406 INFO L225 Difference]: With dead ends: 51 [2020-10-12 18:14:52,407 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 18:14:52,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:14:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 18:14:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-12 18:14:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 18:14:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-10-12 18:14:52,419 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 31 [2020-10-12 18:14:52,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:52,419 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-12 18:14:52,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:14:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2020-10-12 18:14:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:14:52,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:52,421 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:52,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:14:52,422 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash 10057033, now seen corresponding path program 1 times [2020-10-12 18:14:52,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:52,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167889249] [2020-10-12 18:14:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:52,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:52,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:14:54,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:14:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1714 [2020-10-12 18:14:54,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:14:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 18:14:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:14:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:54,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:54,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:14:54,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:54,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:54,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:54,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:14:54,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:14:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-12 18:14:54,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:14:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:14:54,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:54,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:55,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:55,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:55,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:14:55,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:14:55,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 18:14:55,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:14:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:14:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:55,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:55,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:55,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:55,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:14:55,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:55,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 18:14:55,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:14:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:14:55,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 18:14:55,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167889249] [2020-10-12 18:14:55,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:14:55,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:14:55,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92982889] [2020-10-12 18:14:55,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:14:55,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:55,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:14:55,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:14:55,235 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 13 states. [2020-10-12 18:14:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:55,703 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-10-12 18:14:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:14:55,704 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-12 18:14:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:55,705 INFO L225 Difference]: With dead ends: 44 [2020-10-12 18:14:55,706 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 18:14:55,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:14:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 18:14:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-10-12 18:14:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 18:14:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-10-12 18:14:55,723 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 32 [2020-10-12 18:14:55,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:55,723 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-10-12 18:14:55,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:14:55,724 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-10-12 18:14:55,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:14:55,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:55,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:55,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:14:55,726 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:55,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:55,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1704164087, now seen corresponding path program 2 times [2020-10-12 18:14:55,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:55,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375139570] [2020-10-12 18:14:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:55,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:57,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:57,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:14:57,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:14:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-10-12 18:14:57,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:14:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:14:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:14:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:57,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:57,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:57,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:57,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:57,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:14:57,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:14:57,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:57,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:57,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:14:57,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:57,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 18:14:57,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:57,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:14:57,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:57,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:14:57,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:57,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:57,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:57,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:14:57,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:57,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 18:14:57,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:57,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:14:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:14:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:57,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:57,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:57,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:14:57,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:14:57,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:14:57,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:57,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:14:57,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 18:14:57,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375139570] [2020-10-12 18:14:57,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:14:57,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:14:57,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39119168] [2020-10-12 18:14:57,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:14:57,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:57,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:14:57,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:14:57,757 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 10 states. [2020-10-12 18:14:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:57,924 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2020-10-12 18:14:57,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:14:57,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-12 18:14:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:57,926 INFO L225 Difference]: With dead ends: 47 [2020-10-12 18:14:57,926 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 18:14:57,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:14:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 18:14:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-10-12 18:14:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 18:14:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-10-12 18:14:57,933 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 32 [2020-10-12 18:14:57,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:57,934 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-12 18:14:57,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:14:57,934 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2020-10-12 18:14:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 18:14:57,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:57,935 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:57,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:14:57,936 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:57,936 INFO L82 PathProgramCache]: Analyzing trace with hash 240924720, now seen corresponding path program 2 times [2020-10-12 18:14:57,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:57,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839197455] [2020-10-12 18:14:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:58,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:14:58,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:58,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 18:14:58,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:14:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:14:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:14:58,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:58,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:58,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:14:58,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:14:58,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:58,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:14:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:58,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 18:14:58,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 18:14:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:14:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-12 18:14:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:14:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:58,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:58,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:14:58,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:14:58,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 18:14:58,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:14:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:14:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:14:58,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:58,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:14:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:58,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:14:58,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:58,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:14:58,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:14:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:14:58,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 18:14:58,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839197455] [2020-10-12 18:14:58,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:14:58,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:14:58,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10278140] [2020-10-12 18:14:58,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:14:58,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:58,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:14:58,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:14:58,238 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 9 states. [2020-10-12 18:14:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:58,406 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-10-12 18:14:58,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:14:58,407 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-12 18:14:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:58,408 INFO L225 Difference]: With dead ends: 44 [2020-10-12 18:14:58,408 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 18:14:58,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:14:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 18:14:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-12 18:14:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 18:14:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-12 18:14:58,414 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 31 [2020-10-12 18:14:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:58,414 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-12 18:14:58,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:14:58,415 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-12 18:14:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 18:14:58,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:58,416 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:58,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:14:58,416 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:58,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:58,416 INFO L82 PathProgramCache]: Analyzing trace with hash 41666553, now seen corresponding path program 3 times [2020-10-12 18:14:58,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:58,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465999922] [2020-10-12 18:14:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:02,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:02,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:15:02,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:15:02,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4237 [2020-10-12 18:15:02,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:15:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:15:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 18:15:02,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:02,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:15:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:02,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:02,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:15:02,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:15:02,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:15:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:15:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:15:02,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:15:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:02,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:02,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:15:02,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 18:15:02,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:15:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:15:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:15:02,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:02,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:02,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:15:02,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 18:15:02,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:15:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:15:02,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:03,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:03,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:03,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:15:03,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 18:15:03,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:15:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:15:03,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:03,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:03,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:03,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:15:03,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:15:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:15:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:15:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 18:15:03,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465999922] [2020-10-12 18:15:03,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:15:03,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:15:03,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036030015] [2020-10-12 18:15:03,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:15:03,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:15:03,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:15:03,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:15:03,148 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 13 states. [2020-10-12 18:15:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:15:03,395 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-10-12 18:15:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:15:03,396 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-12 18:15:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:15:03,397 INFO L225 Difference]: With dead ends: 43 [2020-10-12 18:15:03,397 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 18:15:03,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:15:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 18:15:03,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-12 18:15:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:15:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-10-12 18:15:03,409 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 40 [2020-10-12 18:15:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:15:03,409 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-10-12 18:15:03,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:15:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-10-12 18:15:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 18:15:03,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:15:03,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:15:03,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:15:03,413 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:15:03,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:15:03,413 INFO L82 PathProgramCache]: Analyzing trace with hash -390484327, now seen corresponding path program 4 times [2020-10-12 18:15:03,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:15:03,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265858886] [2020-10-12 18:15:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:15:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:03,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:03,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:03,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:03,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:04,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:04,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:06,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:15:06,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 18:15:06,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3210 [2020-10-12 18:15:06,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:15:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:15:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:15:06,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:15:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:06,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:15:06,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:06,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:15:06,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:15:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:15:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:15:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:15:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:08,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:08,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:15:08,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 18:15:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-10-12 18:15:08,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:15:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:15:08,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:15:08,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:08,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:08,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:08,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:08,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:09,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:09,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:15:09,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:15:09,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-10-12 18:15:09,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:15:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:15:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:09,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:09,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:09,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:15:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:15:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 18:15:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:15:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:15:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:09,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:09,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:09,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:15:09,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:09,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 18:15:09,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:15:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:15:09,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 18:15:09,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265858886] [2020-10-12 18:15:09,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:15:09,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:15:09,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845968472] [2020-10-12 18:15:09,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:15:09,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:15:09,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:15:09,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:15:09,995 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 16 states. [2020-10-12 18:15:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:15:10,450 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-10-12 18:15:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:15:10,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-12 18:15:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:15:10,452 INFO L225 Difference]: With dead ends: 51 [2020-10-12 18:15:10,452 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 18:15:10,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:15:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 18:15:10,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-12 18:15:10,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:15:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-12 18:15:10,461 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 40 [2020-10-12 18:15:10,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:15:10,462 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-12 18:15:10,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:15:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-12 18:15:10,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 18:15:10,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:15:10,466 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:15:10,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:15:10,467 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:15:10,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:15:10,468 INFO L82 PathProgramCache]: Analyzing trace with hash -692522583, now seen corresponding path program 5 times [2020-10-12 18:15:10,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:15:10,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61696323] [2020-10-12 18:15:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:15:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:10,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:11,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:12,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:15,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:15:15,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 18:15:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:15:15,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:15:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:15:15,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 18:15:15,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:15,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:15:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:15,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:15:15,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:15:15,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:15:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:15:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:15:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:15,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:18,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:15:18,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 18:15:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3049 [2020-10-12 18:15:18,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:15:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:15:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:15:18,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:20,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:15:20,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:15:20,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1590 [2020-10-12 18:15:20,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:20,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:15:20,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:20,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:15:20,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:15:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:20,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:15:20,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:15:20,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-12 18:15:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:15:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:15:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:20,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:15:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:15:20,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 18:15:20,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:15:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:15:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:20,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:20,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:20,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:20,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:15:20,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:20,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:15:20,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:15:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:15:20,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 18:15:20,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61696323] [2020-10-12 18:15:20,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:15:20,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:15:20,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884784922] [2020-10-12 18:15:20,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:15:20,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:15:20,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:15:20,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:15:20,835 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 16 states. [2020-10-12 18:15:21,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:15:21,123 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2020-10-12 18:15:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:15:21,123 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-12 18:15:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:15:21,124 INFO L225 Difference]: With dead ends: 45 [2020-10-12 18:15:21,124 INFO L226 Difference]: Without dead ends: 41 [2020-10-12 18:15:21,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:15:21,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-12 18:15:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-10-12 18:15:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:15:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-12 18:15:21,140 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 48 [2020-10-12 18:15:21,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:15:21,141 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-12 18:15:21,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:15:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-12 18:15:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 18:15:21,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:15:21,142 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:15:21,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:15:21,145 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:15:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:15:21,145 INFO L82 PathProgramCache]: Analyzing trace with hash 855120905, now seen corresponding path program 6 times [2020-10-12 18:15:21,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:15:21,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116496386] [2020-10-12 18:15:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:15:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:24,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:15:24,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:15:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2863 [2020-10-12 18:15:24,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:15:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:15:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 18:15:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:24,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:15:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:15:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:24,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:15:24,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:15:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:15:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:15:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:24,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:24,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:26,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:15:26,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 18:15:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2455 [2020-10-12 18:15:26,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:15:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:15:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:26,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:26,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:27,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:27,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:15:27,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:15:27,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-12 18:15:27,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:15:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:15:27,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:27,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:27,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:27,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:27,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:15:27,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 18:15:27,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:15:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:15:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:27,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:27,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:27,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:15:27,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:27,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 18:15:27,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:15:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:15:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:27,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:27,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:27,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:15:27,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:15:27,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:15:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:15:27,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 18:15:27,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116496386] [2020-10-12 18:15:27,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:15:27,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:15:27,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300904703] [2020-10-12 18:15:27,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:15:27,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:15:27,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:15:27,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:15:27,667 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 18 states. [2020-10-12 18:15:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:15:28,267 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2020-10-12 18:15:28,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:15:28,267 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-12 18:15:28,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:15:28,268 INFO L225 Difference]: With dead ends: 51 [2020-10-12 18:15:28,268 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 18:15:28,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:15:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 18:15:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2020-10-12 18:15:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-12 18:15:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-12 18:15:28,275 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 48 [2020-10-12 18:15:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:15:28,276 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-12 18:15:28,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:15:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-12 18:15:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 18:15:28,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:15:28,277 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:15:28,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:15:28,277 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:15:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:15:28,277 INFO L82 PathProgramCache]: Analyzing trace with hash 234819929, now seen corresponding path program 7 times [2020-10-12 18:15:28,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:15:28,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883755582] [2020-10-12 18:15:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:15:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:28,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:29,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:29,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:33,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:15:33,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 18:15:33,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:15:33,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:33,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:15:33,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:15:33,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:15:33,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:33,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:15:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:33,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:33,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:15:33,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:33,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:15:33,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:15:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:15:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:33,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:15:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:33,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:37,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:15:37,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 18:15:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4356 [2020-10-12 18:15:37,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:15:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:15:37,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:37,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:38,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:39,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:40,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:40,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:15:40,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 18:15:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3261 [2020-10-12 18:15:40,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:15:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:15:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:41,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:41,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:15:41,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 18:15:41,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:15:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:15:41,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:41,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:41,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:41,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:15:41,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:41,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 18:15:41,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:15:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:15:41,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:41,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:41,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:15:41,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:15:41,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:15:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:15:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:41,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:15:41,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:15:41,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:15:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:15:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 51 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 18:15:41,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883755582] [2020-10-12 18:15:41,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:15:41,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:15:41,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862007611] [2020-10-12 18:15:41,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:15:41,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:15:41,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:15:41,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:15:41,569 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 21 states. [2020-10-12 18:15:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:15:42,239 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2020-10-12 18:15:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:15:42,240 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2020-10-12 18:15:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:15:42,241 INFO L225 Difference]: With dead ends: 60 [2020-10-12 18:15:42,241 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 18:15:42,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 18:15:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 18:15:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 39. [2020-10-12 18:15:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 18:15:42,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-12 18:15:42,248 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 56 [2020-10-12 18:15:42,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:15:42,248 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-12 18:15:42,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:15:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-12 18:15:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 18:15:42,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:15:42,249 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:15:42,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:15:42,249 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:15:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:15:42,250 INFO L82 PathProgramCache]: Analyzing trace with hash -391951623, now seen corresponding path program 8 times [2020-10-12 18:15:42,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:15:42,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198154291] [2020-10-12 18:15:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:15:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:42,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:43,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:47,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:47,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:15:47,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 18:15:47,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:15:47,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:47,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:15:47,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:15:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:15:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:47,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:15:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:47,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:15:47,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:15:47,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:15:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:15:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:47,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:15:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:47,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:47,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:15:47,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:47,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 18:15:47,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:15:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:15:47,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:47,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:47,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:47,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:47,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:15:47,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 18:15:47,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:15:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:15:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:47,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:47,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:15:47,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:47,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 18:15:47,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:15:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:15:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:47,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:47,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:47,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:47,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:15:47,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:47,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 18:15:47,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:15:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:15:47,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:47,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:47,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:47,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:47,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:15:47,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:47,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:15:47,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:15:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:15:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:47,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:47,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:47,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:15:47,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:47,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:15:47,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:15:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:15:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 18:15:47,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198154291] [2020-10-12 18:15:47,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:15:47,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:15:47,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559348242] [2020-10-12 18:15:47,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:15:47,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:15:47,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:15:47,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:15:47,901 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 18 states. [2020-10-12 18:15:48,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:15:48,301 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-10-12 18:15:48,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:15:48,301 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-10-12 18:15:48,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:15:48,303 INFO L225 Difference]: With dead ends: 55 [2020-10-12 18:15:48,303 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 18:15:48,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2020-10-12 18:15:48,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 18:15:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2020-10-12 18:15:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 18:15:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-10-12 18:15:48,310 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 56 [2020-10-12 18:15:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:15:48,311 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-10-12 18:15:48,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:15:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-10-12 18:15:48,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 18:15:48,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:15:48,312 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:15:48,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:15:48,312 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:15:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:15:48,312 INFO L82 PathProgramCache]: Analyzing trace with hash -356399095, now seen corresponding path program 9 times [2020-10-12 18:15:48,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:15:48,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830034246] [2020-10-12 18:15:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:15:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:48,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:49,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:50,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:50,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:53,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:15:53,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-12 18:15:53,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:15:53,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:15:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:15:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:15:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:53,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:15:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:53,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:15:53,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:53,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:15:53,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:15:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:15:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:53,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:15:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:54,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:54,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:55,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:58,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:15:58,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-12 18:15:58,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:15:58,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:15:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:15:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:15:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:59,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:59,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:00,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:00,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:03,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:03,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:16:03,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-12 18:16:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:16:03,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:16:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:16:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:03,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:03,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:16:03,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 18:16:03,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:16:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:16:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:03,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:03,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:16:03,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:03,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 18:16:03,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:03,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:16:03,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:03,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:16:03,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:03,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:03,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:03,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:16:03,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 18:16:03,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:16:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:16:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:03,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:03,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:16:03,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 18:16:03,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:16:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:16:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:04,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:04,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:16:04,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:04,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:16:04,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:04,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:16:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:16:04,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 26 proven. 57 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-12 18:16:04,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830034246] [2020-10-12 18:16:04,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:16:04,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:16:04,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54138493] [2020-10-12 18:16:04,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:16:04,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:16:04,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:16:04,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:16:04,104 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 21 states. [2020-10-12 18:16:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:16:04,974 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2020-10-12 18:16:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:16:04,975 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-10-12 18:16:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:16:04,976 INFO L225 Difference]: With dead ends: 72 [2020-10-12 18:16:04,976 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 18:16:04,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 18:16:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 18:16:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 49. [2020-10-12 18:16:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 18:16:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2020-10-12 18:16:04,985 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 64 [2020-10-12 18:16:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:16:04,985 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2020-10-12 18:16:04,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:16:04,990 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2020-10-12 18:16:04,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 18:16:04,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:16:04,992 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:16:04,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:16:04,993 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:16:04,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:16:04,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1540502281, now seen corresponding path program 10 times [2020-10-12 18:16:04,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:16:04,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119959209] [2020-10-12 18:16:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:16:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:06,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:10,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:16:10,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 18:16:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:16:10,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:16:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:16:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 18:16:10,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:10,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:16:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:10,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:16:10,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:16:10,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:16:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:16:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:10,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:16:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:10,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:15,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:16:15,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 18:16:15,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:16:15,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:16:15,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:15,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:16:15,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:18,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:18,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:16:18,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 18:16:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3442 [2020-10-12 18:16:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:16:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:16:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:18,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:18,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:16:18,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 18:16:18,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:18,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:16:18,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:18,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:16:18,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:18,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:18,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:18,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:16:18,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 18:16:18,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:16:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:16:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:18,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:18,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:18,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:16:18,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 18:16:18,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:16:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:16:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:19,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:16:19,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 18:16:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:16:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:16:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:19,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:19,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:19,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:16:19,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:16:19,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:16:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:16:19,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 64 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 18:16:19,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119959209] [2020-10-12 18:16:19,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:16:19,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:16:19,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396303331] [2020-10-12 18:16:19,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:16:19,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:16:19,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:16:19,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:16:19,211 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 22 states. [2020-10-12 18:16:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:16:20,170 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2020-10-12 18:16:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:16:20,176 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 64 [2020-10-12 18:16:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:16:20,177 INFO L225 Difference]: With dead ends: 72 [2020-10-12 18:16:20,178 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 18:16:20,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:16:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 18:16:20,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2020-10-12 18:16:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 18:16:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-10-12 18:16:20,186 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 64 [2020-10-12 18:16:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:16:20,187 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-10-12 18:16:20,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:16:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-10-12 18:16:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 18:16:20,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:16:20,188 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:16:20,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:16:20,188 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:16:20,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:16:20,189 INFO L82 PathProgramCache]: Analyzing trace with hash -825995095, now seen corresponding path program 11 times [2020-10-12 18:16:20,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:16:20,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813407597] [2020-10-12 18:16:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:16:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:20,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:21,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:21,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:22,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:25,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:25,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:16:25,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-12 18:16:25,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4981 [2020-10-12 18:16:25,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:25,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:16:25,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:16:25,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 18:16:25,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:25,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:16:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:25,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:25,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:25,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:16:25,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:25,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:16:25,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:16:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:16:25,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:25,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:16:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:25,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:25,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:16:25,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-12 18:16:25,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:16:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:16:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:25,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:25,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:25,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:25,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:16:25,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:25,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 18:16:25,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:16:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:16:25,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:25,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:25,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:16:25,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 18:16:25,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:16:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:16:25,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:25,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:16:25,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 18:16:25,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:16:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:16:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:25,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:25,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:16:25,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 18:16:25,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:16:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:16:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:25,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:25,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:26,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:26,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:16:26,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:26,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:16:26,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:16:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:16:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:26,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:26,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:16:26,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:16:26,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:16:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:16:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 23 proven. 80 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-12 18:16:26,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813407597] [2020-10-12 18:16:26,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:16:26,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:16:26,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999552086] [2020-10-12 18:16:26,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:16:26,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:16:26,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:16:26,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:16:26,142 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 21 states. [2020-10-12 18:16:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:16:26,794 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2020-10-12 18:16:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:16:26,795 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-10-12 18:16:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:16:26,796 INFO L225 Difference]: With dead ends: 62 [2020-10-12 18:16:26,796 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 18:16:26,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 18:16:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 18:16:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-12 18:16:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 18:16:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-10-12 18:16:26,804 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 64 [2020-10-12 18:16:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:16:26,805 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-10-12 18:16:26,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:16:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-10-12 18:16:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 18:16:26,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:16:26,806 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:16:26,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:16:26,806 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:16:26,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:16:26,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2010098281, now seen corresponding path program 12 times [2020-10-12 18:16:26,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:16:26,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274053666] [2020-10-12 18:16:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:16:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:26,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:27,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:28,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:29,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:29,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:31,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:16:31,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-12 18:16:31,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:16:31,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:16:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:16:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:16:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:16:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:16:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:16:31,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:16:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:16:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:16:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:32,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:36,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:16:36,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-12 18:16:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:16:36,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:16:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:16:36,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:36,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:37,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:37,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:37,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:38,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:41,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:16:41,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-12 18:16:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4198 [2020-10-12 18:16:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:16:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:16:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:41,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:42,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:43,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:16:43,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:16:43,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1877 [2020-10-12 18:16:43,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:16:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:16:43,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:43,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:43,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:16:43,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:16:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-12 18:16:43,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:16:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:16:43,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:43,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:16:43,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:43,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 18:16:43,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:43,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:16:43,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:43,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:16:43,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:43,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:43,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:16:43,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:43,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:16:43,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:16:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:16:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:43,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:43,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:43,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:16:43,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:43,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:16:43,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:16:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:16:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 78 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 18:16:43,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274053666] [2020-10-12 18:16:43,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:16:43,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:16:43,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189126809] [2020-10-12 18:16:43,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:16:43,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:16:43,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:16:43,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:16:43,953 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 23 states. [2020-10-12 18:16:44,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:16:44,783 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2020-10-12 18:16:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:16:44,784 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2020-10-12 18:16:44,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:16:44,785 INFO L225 Difference]: With dead ends: 87 [2020-10-12 18:16:44,785 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 18:16:44,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=1200, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 18:16:44,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 18:16:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-12 18:16:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 18:16:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-12 18:16:44,792 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 64 [2020-10-12 18:16:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:16:44,793 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-12 18:16:44,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:16:44,793 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-12 18:16:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 18:16:44,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:16:44,794 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:16:44,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:16:44,794 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:16:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:16:44,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1169706489, now seen corresponding path program 13 times [2020-10-12 18:16:44,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:16:44,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114220160] [2020-10-12 18:16:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:16:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:44,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:46,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:46,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:49,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:49,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:16:49,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-12 18:16:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:16:49,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:49,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:16:49,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:16:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 18:16:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:49,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:16:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:49,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:49,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:16:49,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:16:49,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:16:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:16:49,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:16:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:50,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:50,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:16:50,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-12 18:16:50,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:16:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:16:50,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:50,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:50,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:50,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:16:50,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:50,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 18:16:50,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:16:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:16:50,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:50,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:50,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:50,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:50,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:16:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 18:16:50,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:16:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:16:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:50,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:50,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:50,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:16:50,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:50,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 18:16:50,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:16:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:16:50,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:50,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:50,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:50,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:16:50,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 18:16:50,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:16:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:16:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:50,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:50,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:50,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:50,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:16:50,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:50,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 18:16:50,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:16:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:50,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:16:50,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:50,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:50,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:16:50,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:50,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 18:16:50,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:50,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:16:50,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:50,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:16:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:50,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:50,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:16:50,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:16:50,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:16:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:16:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 51 proven. 85 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-12 18:16:51,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114220160] [2020-10-12 18:16:51,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:16:51,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:16:51,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219688499] [2020-10-12 18:16:51,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:16:51,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:16:51,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:16:51,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:16:51,014 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 21 states. [2020-10-12 18:16:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:16:51,657 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-10-12 18:16:51,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:16:51,657 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-12 18:16:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:16:51,659 INFO L225 Difference]: With dead ends: 57 [2020-10-12 18:16:51,659 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 18:16:51,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:16:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 18:16:51,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-10-12 18:16:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 18:16:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-12 18:16:51,666 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 72 [2020-10-12 18:16:51,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:16:51,670 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-12 18:16:51,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:16:51,670 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-12 18:16:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 18:16:51,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:16:51,671 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:16:51,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:16:51,671 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:16:51,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:16:51,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2014738009, now seen corresponding path program 14 times [2020-10-12 18:16:51,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:16:51,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438838880] [2020-10-12 18:16:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:16:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:51,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:53,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:56,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:56,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:16:56,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-12 18:16:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:16:56,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:16:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:16:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 18:16:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:16:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:56,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:56,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:16:56,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:16:56,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:16:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:16:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:56,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:16:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:56,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:56,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:16:56,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-12 18:16:56,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:16:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:16:56,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:56,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:57,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:57,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:16:57,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-12 18:16:57,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:16:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:16:57,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:57,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:57,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:57,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:57,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:16:57,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-12 18:16:57,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:16:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:16:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:57,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:57,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:16:57,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 18:16:57,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:57,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:16:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:16:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:58,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:58,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:58,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:16:58,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:58,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 18:16:58,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:16:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:58,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:16:58,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:58,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:58,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:16:58,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:58,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 18:16:58,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:16:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:16:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:58,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:16:58,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:16:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:16:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:16:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:16:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:58,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:16:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:16:58,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:16:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:16:58,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:16:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:16:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:16:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:16:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:16:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 55 proven. 90 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-12 18:16:58,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438838880] [2020-10-12 18:16:58,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:16:58,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:16:58,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858949291] [2020-10-12 18:16:58,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:16:58,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:16:58,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:16:58,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:16:58,461 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 23 states. [2020-10-12 18:16:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:16:59,115 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-10-12 18:16:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:16:59,117 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72 [2020-10-12 18:16:59,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:16:59,118 INFO L225 Difference]: With dead ends: 64 [2020-10-12 18:16:59,118 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 18:16:59,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:16:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 18:16:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-10-12 18:16:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 18:16:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-12 18:16:59,131 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 72 [2020-10-12 18:16:59,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:16:59,132 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-12 18:16:59,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:16:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-12 18:16:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 18:16:59,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:16:59,133 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:16:59,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:16:59,133 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:16:59,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:16:59,133 INFO L82 PathProgramCache]: Analyzing trace with hash 278579721, now seen corresponding path program 15 times [2020-10-12 18:16:59,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:16:59,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853748278] [2020-10-12 18:16:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:16:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:16:59,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:16:59,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:00,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:00,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:03,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:03,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:04,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:04,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:17:04,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-12 18:17:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:17:04,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 18:17:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:17:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:17:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:04,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:17:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:04,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:04,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:17:04,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:04,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:17:04,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:04,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:17:04,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:04,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:17:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:04,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:17:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:04,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:04,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 18:17:04,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-12 18:17:04,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:17:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 18:17:04,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:17:04,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:05,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:05,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:17:05,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:05,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-12 18:17:05,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:17:05,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:05,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:17:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:17:05,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:05,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:05,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:17:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:05,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-12 18:17:05,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:05,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:17:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:17:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:05,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:06,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:06,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:17:06,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-12 18:17:06,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:17:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:17:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:06,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:06,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:06,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:06,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:17:06,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 18:17:06,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:17:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:17:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:06,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:06,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:17:06,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:06,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 18:17:06,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:06,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:17:06,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:06,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:17:06,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:06,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:06,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:17:06,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 18:17:06,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:17:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:17:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:17:06,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:06,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:06,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:06,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:17:06,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:17:06,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:17:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:17:06,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:06,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:06,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:06,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:17:06,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:06,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:17:06,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:17:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:17:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:17:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 60 proven. 117 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 18:17:06,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853748278] [2020-10-12 18:17:06,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:17:06,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 18:17:06,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560538897] [2020-10-12 18:17:06,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 18:17:06,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:17:06,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 18:17:06,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:17:06,974 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 24 states. [2020-10-12 18:17:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:17:07,733 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-10-12 18:17:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:17:07,734 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2020-10-12 18:17:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:17:07,735 INFO L225 Difference]: With dead ends: 67 [2020-10-12 18:17:07,736 INFO L226 Difference]: Without dead ends: 63 [2020-10-12 18:17:07,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=1399, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 18:17:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-12 18:17:07,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2020-10-12 18:17:07,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 18:17:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-10-12 18:17:07,742 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 80 [2020-10-12 18:17:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:17:07,742 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-10-12 18:17:07,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 18:17:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-10-12 18:17:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 18:17:07,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:17:07,743 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:17:07,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:17:07,744 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:17:07,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:17:07,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1521148151, now seen corresponding path program 16 times [2020-10-12 18:17:07,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:17:07,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686859858] [2020-10-12 18:17:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:17:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:09,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:09,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:11,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:12,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:12,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:12,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:17:12,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-12 18:17:12,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:17:12,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 18:17:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:17:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 18:17:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:17:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:12,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:12,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:17:12,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:17:12,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:17:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:17:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:12,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:17:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:12,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:14,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:15,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:16,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:16,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:16,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:17,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 18:17:17,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-12 18:17:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:17:17,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:17:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:17:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:17,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:22,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:22,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:17:22,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 36 [2020-10-12 18:17:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:17:22,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:17:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:17:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:22,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:23,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:23,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:26,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:26,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:17:26,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:17:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3780 [2020-10-12 18:17:26,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:17:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:17:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:26,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:26,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:28,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:28,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:17:28,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 18:17:28,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-10-12 18:17:28,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:17:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:17:28,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:28,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:28,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:28,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:17:28,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 18:17:28,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:17:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:17:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:28,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:28,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:28,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:17:28,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 18:17:28,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:17:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:17:28,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:28,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:28,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:17:28,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:28,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 18:17:28,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:17:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:17:28,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:28,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:28,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:17:28,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:17:28,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:17:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:17:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:29,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:29,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:17:29,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:17:29,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:17:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:17:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 58 proven. 124 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-12 18:17:29,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686859858] [2020-10-12 18:17:29,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:17:29,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 18:17:29,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100137297] [2020-10-12 18:17:29,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 18:17:29,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:17:29,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 18:17:29,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:17:29,198 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 26 states. [2020-10-12 18:17:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:17:30,374 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2020-10-12 18:17:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 18:17:30,374 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 80 [2020-10-12 18:17:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:17:30,376 INFO L225 Difference]: With dead ends: 79 [2020-10-12 18:17:30,376 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 18:17:30,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=300, Invalid=1592, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 18:17:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 18:17:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 58. [2020-10-12 18:17:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 18:17:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2020-10-12 18:17:30,383 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 80 [2020-10-12 18:17:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:17:30,383 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2020-10-12 18:17:30,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 18:17:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2020-10-12 18:17:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 18:17:30,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:17:30,385 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:17:30,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 18:17:30,385 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:17:30,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:17:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1353800617, now seen corresponding path program 17 times [2020-10-12 18:17:30,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:17:30,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482879891] [2020-10-12 18:17:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:17:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:30,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:32,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:32,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:33,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:33,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:33,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:34,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:35,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:35,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:17:35,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-12 18:17:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:17:35,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 18:17:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:17:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:17:35,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:17:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:35,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:35,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:17:35,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:35,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:17:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:17:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:17:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:17:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:35,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:35,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 18:17:35,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:35,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-12 18:17:35,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:35,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:17:35,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 18:17:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:35,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:36,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:36,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:17:36,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 18:17:36,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:17:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:17:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:36,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:36,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:17:36,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:36,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 18:17:36,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:17:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:17:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:36,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:36,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:17:36,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 18:17:36,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:17:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:17:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:36,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:36,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:36,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:17:36,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:36,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 18:17:36,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:36,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:17:36,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:36,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:17:36,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:36,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:36,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:17:36,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:36,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 18:17:36,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:17:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:17:36,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:36,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:36,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:17:36,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 18:17:36,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:17:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:17:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:36,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:36,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:36,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:17:36,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 18:17:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:17:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:17:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:37,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:37,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:17:37,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:17:37,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:17:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:17:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:17:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 71 proven. 96 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 18:17:37,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482879891] [2020-10-12 18:17:37,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:17:37,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 18:17:37,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078096523] [2020-10-12 18:17:37,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 18:17:37,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:17:37,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 18:17:37,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:17:37,147 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand 24 states. [2020-10-12 18:17:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:17:38,074 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2020-10-12 18:17:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:17:38,074 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2020-10-12 18:17:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:17:38,076 INFO L225 Difference]: With dead ends: 71 [2020-10-12 18:17:38,076 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 18:17:38,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 18:17:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 18:17:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2020-10-12 18:17:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 18:17:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2020-10-12 18:17:38,090 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 80 [2020-10-12 18:17:38,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:17:38,090 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2020-10-12 18:17:38,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 18:17:38,090 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2020-10-12 18:17:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 18:17:38,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:17:38,094 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:17:38,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 18:17:38,095 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:17:38,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:17:38,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1243128681, now seen corresponding path program 18 times [2020-10-12 18:17:38,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:17:38,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570016017] [2020-10-12 18:17:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:17:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:39,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:39,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:42,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:43,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:43,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:43,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:17:43,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-12 18:17:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:17:43,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 18:17:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:17:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:17:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:17:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:43,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:43,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:17:43,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:43,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:17:43,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:17:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:17:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:43,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:17:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:43,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:43,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 18:17:43,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:43,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-12 18:17:43,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:17:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 18:17:43,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:43,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:43,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:43,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:43,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:17:43,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:43,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 18:17:43,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:17:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:17:43,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:43,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:44,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:44,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:17:44,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:44,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 18:17:44,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:44,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:17:44,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:44,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:17:44,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:44,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:44,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:17:44,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 18:17:44,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:17:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:17:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:44,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:44,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:44,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:17:44,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 18:17:44,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:17:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:17:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:44,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:44,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:17:44,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 18:17:44,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:17:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:17:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:44,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:44,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:44,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:17:44,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:44,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 18:17:44,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:44,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:17:44,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:44,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:17:44,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:44,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:44,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:44,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:17:44,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:17:44,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:17:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:17:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:44,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:44,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:44,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:17:44,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:17:44,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:17:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:17:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 46 proven. 86 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-12 18:17:44,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570016017] [2020-10-12 18:17:44,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:17:44,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:17:44,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96097973] [2020-10-12 18:17:44,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:17:44,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:17:44,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:17:44,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:17:44,775 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 22 states. [2020-10-12 18:17:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:17:45,597 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2020-10-12 18:17:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:17:45,598 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2020-10-12 18:17:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:17:45,599 INFO L225 Difference]: With dead ends: 75 [2020-10-12 18:17:45,600 INFO L226 Difference]: Without dead ends: 71 [2020-10-12 18:17:45,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 18:17:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-12 18:17:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2020-10-12 18:17:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-12 18:17:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-10-12 18:17:45,605 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 80 [2020-10-12 18:17:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:17:45,606 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-10-12 18:17:45,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:17:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-10-12 18:17:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 18:17:45,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:17:45,607 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:17:45,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 18:17:45,608 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:17:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:17:45,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1809270185, now seen corresponding path program 19 times [2020-10-12 18:17:45,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:17:45,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783178269] [2020-10-12 18:17:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:17:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:47,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:49,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:49,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:50,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:50,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:17:50,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-12 18:17:50,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 18:17:50,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 18:17:50,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:17:50,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:17:50,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:17:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:50,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:50,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:17:50,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:17:50,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:17:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:17:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:17:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:50,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:50,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 18:17:50,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-12 18:17:50,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:17:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 18:17:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:51,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:51,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:17:51,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 18:17:51,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:17:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:17:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:51,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:51,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:17:51,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:51,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-12 18:17:51,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:17:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:17:51,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:51,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:51,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:51,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:17:51,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:51,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 18:17:51,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:17:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:17:51,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:51,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:51,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:17:51,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 18:17:51,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:17:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:17:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:51,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:51,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:51,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:17:51,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 18:17:51,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:17:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:51,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:17:51,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:52,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:52,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:52,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:17:52,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 18:17:52,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:17:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:17:52,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:52,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:52,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:52,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:17:52,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:17:52,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:17:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:52,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:17:52,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:52,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:17:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:52,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:52,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:17:52,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:52,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:17:52,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:17:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:52,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:17:52,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 53 proven. 134 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-12 18:17:52,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783178269] [2020-10-12 18:17:52,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:17:52,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 18:17:52,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184186278] [2020-10-12 18:17:52,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 18:17:52,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:17:52,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 18:17:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:17:52,331 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 25 states. [2020-10-12 18:17:53,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:17:53,150 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2020-10-12 18:17:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:17:53,151 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 80 [2020-10-12 18:17:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:17:53,152 INFO L225 Difference]: With dead ends: 78 [2020-10-12 18:17:53,152 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 18:17:53,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=182, Invalid=1458, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:17:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 18:17:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2020-10-12 18:17:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 18:17:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-10-12 18:17:53,159 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 80 [2020-10-12 18:17:53,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:17:53,159 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-10-12 18:17:53,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 18:17:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-10-12 18:17:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 18:17:53,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:17:53,161 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:17:53,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 18:17:53,161 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:17:53,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:17:53,161 INFO L82 PathProgramCache]: Analyzing trace with hash -501559047, now seen corresponding path program 20 times [2020-10-12 18:17:53,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:17:53,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731229892] [2020-10-12 18:17:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:17:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:54,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:55,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:55,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:55,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:57,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:58,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 18:17:58,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-12 18:17:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:17:58,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-12 18:17:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:17:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 18:17:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:58,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:17:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:17:58,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:17:58,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:17:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:17:58,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:17:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:17:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:17:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:17:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:17:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:17:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:17:58,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:17:59,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:00,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:02,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:03,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 18:18:03,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-12 18:18:03,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:18:03,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:03,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-12 18:18:03,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:03,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 18:18:03,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:18:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:18:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:06,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:06,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:07,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:07,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:08,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 18:18:08,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-12 18:18:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:18:08,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:18:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:18:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:08,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:18:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:18:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:09,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:10,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:12,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:12,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:12,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:13,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:18:13,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-12 18:18:13,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:18:13,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:18:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 18:18:13,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:13,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:18:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:18:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:14,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:15,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:18,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:18:18,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 18:18:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:18:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:18:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:18:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:18:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:18:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:18,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:19,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:22,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:22,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:18:22,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 18:18:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4384 [2020-10-12 18:18:22,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:18:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:18:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:22,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:18:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:18:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:22,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:22,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:23,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:23,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:24,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:24,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:18:24,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:18:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2125 [2020-10-12 18:18:24,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:24,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:18:24,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:24,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:18:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:18:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:18:24,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:24,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:25,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:18:25,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:18:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-12 18:18:25,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:18:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:18:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:18:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:18:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:25,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:25,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:18:25,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:18:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-12 18:18:25,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:25,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:18:25,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:25,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:18:25,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:26,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:18:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:18:26,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:26,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:26,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:18:26,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:18:26,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 18:18:26,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:26,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:18:26,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:26,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:18:26,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 18:18:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:18:26,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:18:26,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:18:26,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:18:26,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:18:26,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:18:26,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:18:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:18:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:18:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:18:26,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:18:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 120 proven. 96 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-12 18:18:26,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731229892] [2020-10-12 18:18:26,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:18:26,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:18:26,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711344199] [2020-10-12 18:18:26,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:18:26,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:18:26,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:18:26,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:18:26,213 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 21 states. [2020-10-12 18:18:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:18:26,892 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2020-10-12 18:18:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:18:26,893 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 88 [2020-10-12 18:18:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:18:26,893 INFO L225 Difference]: With dead ends: 77 [2020-10-12 18:18:26,893 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 18:18:26,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 18:18:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 18:18:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 18:18:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 18:18:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 18:18:26,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2020-10-12 18:18:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:18:26,895 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 18:18:26,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:18:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 18:18:26,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 18:18:26,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 18:18:26,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 18:18:27,034 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 18:18:27,035 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:18:27,035 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-10-12 18:18:27,035 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-10-12 18:18:27,035 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y1 1) gcd_~y2) (<= 2 (+ gcd_~y2 gcd_~y1)) (<= gcd_~y1 |gcd_#in~y1|) (<= |gcd_#in~y1| gcd_~y1)) [2020-10-12 18:18:27,035 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-12 18:18:27,036 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-10-12 18:18:27,036 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (<= (+ gcd_~y2 1) gcd_~y1) (<= |gcd_#in~y2| gcd_~y2) (<= gcd_~y1 |gcd_#in~y1|) (<= |gcd_#in~y1| gcd_~y1) (<= gcd_~y2 |gcd_#in~y2|)) [2020-10-12 18:18:27,036 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-10-12 18:18:27,036 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-12 18:18:27,036 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-10-12 18:18:27,036 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-12 18:18:27,036 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:18:27,037 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 18:18:27,037 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 18:18:27,037 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 18:18:27,037 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-10-12 18:18:27,037 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-10-12 18:18:27,037 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-10-12 18:18:27,037 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-10-12 18:18:27,037 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-10-12 18:18:27,038 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-10-12 18:18:27,038 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= 1 main_~m~0)) [2020-10-12 18:18:27,038 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-10-12 18:18:27,038 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-10-12 18:18:27,038 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-10-12 18:18:27,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:18:27 BoogieIcfgContainer [2020-10-12 18:18:27,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 18:18:27,047 INFO L168 Benchmark]: Toolchain (without parser) took 220002.26 ms. Allocated memory was 146.3 MB in the beginning and 985.1 MB in the end (delta: 838.9 MB). Free memory was 102.6 MB in the beginning and 837.4 MB in the end (delta: -734.9 MB). Peak memory consumption was 104.0 MB. Max. memory is 7.1 GB. [2020-10-12 18:18:27,048 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-12 18:18:27,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.81 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-10-12 18:18:27,049 INFO L168 Benchmark]: Boogie Preprocessor took 130.17 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.8 MB in the beginning and 180.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-12 18:18:27,049 INFO L168 Benchmark]: RCFGBuilder took 253.93 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 166.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-10-12 18:18:27,050 INFO L168 Benchmark]: TraceAbstraction took 219357.93 ms. Allocated memory was 202.4 MB in the beginning and 985.1 MB in the end (delta: 782.8 MB). Free memory was 166.9 MB in the beginning and 837.4 MB in the end (delta: -670.5 MB). Peak memory consumption was 112.3 MB. Max. memory is 7.1 GB. [2020-10-12 18:18:27,052 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.81 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.17 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.8 MB in the beginning and 180.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.93 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 166.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219357.93 ms. Allocated memory was 202.4 MB in the beginning and 985.1 MB in the end (delta: 782.8 MB). Free memory was 166.9 MB in the beginning and 837.4 MB in the end (delta: -670.5 MB). Peak memory consumption was 112.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 219.1s, OverallIterations: 28, TraceHistogramMax: 10, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 531 SDtfs, 661 SDslu, 4975 SDs, 0 SdLazy, 8252 SolverSat, 729 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1037 GetRequests, 347 SyntacticMatches, 12 SemanticMatches, 678 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 28 MinimizatonAttempts, 197 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 53 HoareAnnotationTreeSize, 14 FomulaSimplifications, 351 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 69 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 203.6s InterpolantComputationTime, 1427 NumberOfCodeBlocks, 1427 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1399 ConstructedInterpolants, 0 QuantifiedInterpolants, 512306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 5 PerfectInterpolantSequences, 1595/2895 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...