/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:21:28,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:21:28,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:21:28,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:21:28,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:21:28,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:21:28,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:21:28,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:21:28,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:21:28,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:21:28,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:21:28,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:21:28,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:21:28,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:21:28,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:21:28,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:21:28,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:21:28,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:21:28,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:21:28,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:21:28,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:21:28,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:21:28,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:21:28,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:21:28,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:21:28,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:21:28,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:21:28,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:21:28,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:21:28,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:21:28,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:21:28,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:21:28,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:21:28,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:21:28,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:21:28,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:21:28,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:21:28,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:21:28,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:21:28,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:21:28,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:21:28,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:21:28,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:21:28,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:21:28,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:21:28,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:21:28,222 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:21:28,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:21:28,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:21:28,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:21:28,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:21:28,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:21:28,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:21:28,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:21:28,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:21:28,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:21:28,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:21:28,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:21:28,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:21:28,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:21:28,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:21:28,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:21:28,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:21:28,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:21:28,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:21:28,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:21:28,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:21:28,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:21:28,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:21:28,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:21:28,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:21:28,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:21:28,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:21:28,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:21:28,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:21:28,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:21:28,752 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:21:28,753 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-25 13:21:28,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/030fc4f56/3317ea8e75154dc19c4fe1b0b2ccb023/FLAGcb3769895 [2020-09-25 13:21:29,364 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:21:29,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-25 13:21:29,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/030fc4f56/3317ea8e75154dc19c4fe1b0b2ccb023/FLAGcb3769895 [2020-09-25 13:21:29,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/030fc4f56/3317ea8e75154dc19c4fe1b0b2ccb023 [2020-09-25 13:21:29,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:21:29,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:21:29,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:29,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:21:29,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:21:29,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:29" (1/1) ... [2020-09-25 13:21:29,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcebea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29, skipping insertion in model container [2020-09-25 13:21:29,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:29" (1/1) ... [2020-09-25 13:21:29,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:21:29,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:21:30,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:30,013 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:21:30,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:30,045 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:21:30,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30 WrapperNode [2020-09-25 13:21:30,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:30,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:21:30,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:21:30,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:21:30,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30" (1/1) ... [2020-09-25 13:21:30,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30" (1/1) ... [2020-09-25 13:21:30,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30" (1/1) ... [2020-09-25 13:21:30,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30" (1/1) ... [2020-09-25 13:21:30,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30" (1/1) ... [2020-09-25 13:21:30,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30" (1/1) ... [2020-09-25 13:21:30,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30" (1/1) ... [2020-09-25 13:21:30,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:21:30,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:21:30,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:21:30,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:21:30,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:21:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:21:30,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:21:30,245 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 13:21:30,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:21:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:21:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:21:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 13:21:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:21:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:21:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:21:30,472 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:21:30,473 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:21:30,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:30 BoogieIcfgContainer [2020-09-25 13:21:30,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:21:30,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:21:30,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:21:30,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:21:30,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:21:29" (1/3) ... [2020-09-25 13:21:30,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a99708b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:30, skipping insertion in model container [2020-09-25 13:21:30,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:30" (2/3) ... [2020-09-25 13:21:30,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a99708b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:30, skipping insertion in model container [2020-09-25 13:21:30,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:30" (3/3) ... [2020-09-25 13:21:30,492 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci05.c [2020-09-25 13:21:30,510 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:21:30,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:21:30,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:21:30,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:21:30,586 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:21:30,586 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:21:30,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:21:30,590 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:21:30,590 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:21:30,590 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:21:30,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:21:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 13:21:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 13:21:30,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:30,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:30,636 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:30,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-25 13:21:30,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:30,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313834896] [2020-09-25 13:21:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:21:30,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 13:21:30,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:21:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:21:30,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:30,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:30,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:31,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:31,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:21:31,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:31,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:21:31,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313834896] [2020-09-25 13:21:31,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:31,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:21:31,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030960778] [2020-09-25 13:21:31,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:21:31,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:31,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:21:31,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:21:31,106 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-25 13:21:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:31,242 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-25 13:21:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:21:31,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 13:21:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:31,259 INFO L225 Difference]: With dead ends: 48 [2020-09-25 13:21:31,260 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 13:21:31,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 13:21:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 13:21:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 13:21:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 13:21:31,322 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-25 13:21:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:31,322 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 13:21:31,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:21:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 13:21:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 13:21:31,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:31,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:31,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:21:31,325 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:31,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:31,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-25 13:21:31,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:31,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524201981] [2020-09-25 13:21:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 13:21:31,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:31,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 13:21:31,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:21:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:31,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:31,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:31,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:31,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:21:31,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:21:31,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524201981] [2020-09-25 13:21:31,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:31,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:21:31,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346020550] [2020-09-25 13:21:31,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:21:31,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:31,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:21:31,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:21:31,555 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-25 13:21:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:31,617 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 13:21:31,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:21:31,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 13:21:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:31,619 INFO L225 Difference]: With dead ends: 38 [2020-09-25 13:21:31,619 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 13:21:31,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:31,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 13:21:31,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-25 13:21:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 13:21:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 13:21:31,629 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-25 13:21:31,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:31,629 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 13:21:31,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:21:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 13:21:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:21:31,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:31,632 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:31,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:21:31,632 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:31,633 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-25 13:21:31,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:31,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292589682] [2020-09-25 13:21:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:21:32,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-09-25 13:21:32,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:21:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:32,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:32,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:21:32,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:32,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 13:21:32,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:21:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:32,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:21:32,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:32,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:32,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:21:32,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:21:32,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292589682] [2020-09-25 13:21:32,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:32,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:21:32,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465319789] [2020-09-25 13:21:32,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:21:32,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:32,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:21:32,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:21:32,645 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 13:21:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:32,739 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-25 13:21:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:21:32,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:21:32,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:32,742 INFO L225 Difference]: With dead ends: 68 [2020-09-25 13:21:32,742 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:21:32,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:21:32,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:21:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 13:21:32,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 13:21:32,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 13:21:32,754 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 13:21:32,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:32,754 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 13:21:32,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:21:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 13:21:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 13:21:32,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:32,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:32,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:21:32,757 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:32,758 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-25 13:21:32,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:32,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178717976] [2020-09-25 13:21:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:21:33,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:33,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 13:21:33,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:21:33,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:33,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:33,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-25 13:21:33,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:33,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:33,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:21:33,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:33,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:21:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:33,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:21:33,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:33,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:21:33,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178717976] [2020-09-25 13:21:33,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:33,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:21:33,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979935686] [2020-09-25 13:21:33,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:21:33,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:33,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:21:33,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:21:33,595 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 13:21:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:33,737 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2020-09-25 13:21:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:21:33,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 13:21:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:33,741 INFO L225 Difference]: With dead ends: 74 [2020-09-25 13:21:33,741 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 13:21:33,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:21:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 13:21:33,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-09-25 13:21:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 13:21:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 13:21:33,756 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 36 [2020-09-25 13:21:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:33,757 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 13:21:33,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:21:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 13:21:33,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 13:21:33,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:33,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:33,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:21:33,760 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:33,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:33,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1970096676, now seen corresponding path program 2 times [2020-09-25 13:21:33,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:33,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534948240] [2020-09-25 13:21:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:34,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:38,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 13:21:38,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:21:38,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4254 [2020-09-25 13:21:38,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:38,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:21:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:38,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:38,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:38,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:38,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:38,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:38,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:38,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:39,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:21:39,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:21:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1358 [2020-09-25 13:21:39,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:39,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:21:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:39,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:39,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 13:21:39,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:39,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:21:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:39,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:39,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:39,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:21:39,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:39,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:39,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:39,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:39,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:39,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:39,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:21:39,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:39,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-09-25 13:21:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:39,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:39,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:21:39,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:39,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 13:21:39,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534948240] [2020-09-25 13:21:39,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:39,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:21:39,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413042200] [2020-09-25 13:21:39,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:21:39,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:39,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:21:39,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:39,620 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 6 states. [2020-09-25 13:21:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:39,731 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2020-09-25 13:21:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:21:39,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 13:21:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:39,739 INFO L225 Difference]: With dead ends: 86 [2020-09-25 13:21:39,739 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 13:21:39,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:21:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 13:21:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 62. [2020-09-25 13:21:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 13:21:39,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 13:21:39,762 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 52 [2020-09-25 13:21:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:39,762 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 13:21:39,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:21:39,763 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 13:21:39,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:21:39,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:39,770 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:39,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:21:39,771 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:39,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:39,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1486829505, now seen corresponding path program 2 times [2020-09-25 13:21:39,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:39,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515071347] [2020-09-25 13:21:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 13:21:43,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:21:43,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3840 [2020-09-25 13:21:43,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:43,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 13:21:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:43,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:43,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:43,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:43,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:43,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:43,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:44,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:47,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:21:47,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:21:47,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3434 [2020-09-25 13:21:47,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:47,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:21:47,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:47,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:47,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:47,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:47,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 13:21:47,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:47,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:21:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:47,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:47,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:47,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:47,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:47,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:47,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:47,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:47,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:47,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:47,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:47,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:47,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:47,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:47,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:21:47,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:47,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:21:47,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515071347] [2020-09-25 13:21:47,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:47,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:21:47,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549568339] [2020-09-25 13:21:47,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:21:47,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:47,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:21:47,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:21:47,313 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 7 states. [2020-09-25 13:21:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:47,461 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2020-09-25 13:21:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:21:47,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-09-25 13:21:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:47,468 INFO L225 Difference]: With dead ends: 84 [2020-09-25 13:21:47,469 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 13:21:47,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:21:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 13:21:47,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2020-09-25 13:21:47,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 13:21:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2020-09-25 13:21:47,490 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 53 [2020-09-25 13:21:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:47,490 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-09-25 13:21:47,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:21:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2020-09-25 13:21:47,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 13:21:47,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:47,498 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:47,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:21:47,499 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:47,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:47,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1801616585, now seen corresponding path program 3 times [2020-09-25 13:21:47,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:47,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839571168] [2020-09-25 13:21:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:52,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 13:21:52,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:21:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:21:52,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:52,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:52,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:52,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:21:52,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:21:52,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:52,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:52,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:52,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:52,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:52,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:52,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:52,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:52,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:21:57,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:21:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:21:57,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:21:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 13:21:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:57,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:57,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 13:21:57,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:21:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:57,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:21:57,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:57,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:57,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:21:57,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:21:59,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:21:59,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1752 [2020-09-25 13:21:59,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:21:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:21:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:59,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:59,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 13:21:59,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:59,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:21:59,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:59,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:59,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:59,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:21:59,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:59,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:59,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:59,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:21:59,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 58 proven. 65 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 13:21:59,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839571168] [2020-09-25 13:21:59,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:59,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:21:59,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467553284] [2020-09-25 13:21:59,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:21:59,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:59,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:21:59,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:21:59,775 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand 9 states. [2020-09-25 13:22:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:00,148 INFO L93 Difference]: Finished difference Result 128 states and 186 transitions. [2020-09-25 13:22:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:22:00,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 13:22:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:00,151 INFO L225 Difference]: With dead ends: 128 [2020-09-25 13:22:00,151 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:22:00,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:22:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:22:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-09-25 13:22:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 13:22:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-09-25 13:22:00,173 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 87 [2020-09-25 13:22:00,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:00,177 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-09-25 13:22:00,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:22:00,177 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-09-25 13:22:00,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 13:22:00,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:00,179 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:00,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:22:00,179 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:00,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1419436827, now seen corresponding path program 1 times [2020-09-25 13:22:00,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:00,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365545539] [2020-09-25 13:22:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:00,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:00,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:00,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:00,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:00,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:05,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 13:22:05,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:22:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:22:05,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:05,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:22:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:22:05,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:05,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:05,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:05,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:05,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:22:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:05,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:10,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 13:22:10,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:22:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:22:10,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:10,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:22:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:10,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:10,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:10,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:10,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:10,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 13:22:10,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:10,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:10,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:22:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:10,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:10,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:10,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:10,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:10,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:22:10,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:10,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:10,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:10,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:10,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:10,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:10,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:10,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:10,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:22:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:11,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:22:15,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:22:15,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:22:15,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:22:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:15,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 13:22:15,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:22:15,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:15,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:22:15,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:15,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:15,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:15,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:15,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:22:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:15,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:15,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:22:15,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:15,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:15,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:15,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 56 proven. 83 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-25 13:22:15,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365545539] [2020-09-25 13:22:15,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:15,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:22:15,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615821168] [2020-09-25 13:22:15,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:22:15,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:15,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:22:15,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:22:15,886 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 10 states. [2020-09-25 13:22:16,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:16,095 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2020-09-25 13:22:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:22:16,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-09-25 13:22:16,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:16,097 INFO L225 Difference]: With dead ends: 103 [2020-09-25 13:22:16,097 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 13:22:16,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:22:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 13:22:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-09-25 13:22:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 13:22:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 13:22:16,105 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 91 [2020-09-25 13:22:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:16,106 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 13:22:16,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:22:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 13:22:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 13:22:16,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:16,108 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:16,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:22:16,108 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:16,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 4 times [2020-09-25 13:22:16,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:16,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476760567] [2020-09-25 13:22:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking...