/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:02:56,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:02:56,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:02:56,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:02:56,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:02:56,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:02:56,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:02:56,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:02:56,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:02:56,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:02:56,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:02:56,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:02:56,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:02:56,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:02:56,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:02:56,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:02:56,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:02:56,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:02:56,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:02:56,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:02:56,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:02:56,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:02:56,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:02:56,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:02:56,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:02:56,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:02:56,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:02:56,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:02:56,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:02:56,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:02:56,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:02:56,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:02:56,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:02:56,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:02:56,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:02:56,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:02:56,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:02:56,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:02:56,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:02:56,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:02:56,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:02:56,358 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 02:02:56,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:02:56,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:02:56,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:02:56,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:02:56,408 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:02:56,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:02:56,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:02:56,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:02:56,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:02:56,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:02:56,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:02:56,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:02:56,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:02:56,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:02:56,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:02:56,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:02:56,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:02:56,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:02:56,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:02:56,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:02:56,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:02:56,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:02:56,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:02:56,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:02:56,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:02:56,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:02:56,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:02:56,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:02:56,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:02:56,414 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:02:56,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:02:56,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:02:56,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:02:56,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:02:56,885 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:02:56,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-09-25 02:02:56,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/583a64e4e/e70cd5ef5bd04b6e87c955134a04e0e6/FLAGf761da021 [2020-09-25 02:02:57,491 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:02:57,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-09-25 02:02:57,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/583a64e4e/e70cd5ef5bd04b6e87c955134a04e0e6/FLAGf761da021 [2020-09-25 02:02:57,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/583a64e4e/e70cd5ef5bd04b6e87c955134a04e0e6 [2020-09-25 02:02:57,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:02:57,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:02:57,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:02:57,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:02:57,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:02:57,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:02:57" (1/1) ... [2020-09-25 02:02:57,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:57, skipping insertion in model container [2020-09-25 02:02:57,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:02:57" (1/1) ... [2020-09-25 02:02:57,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:02:57,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:02:58,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:02:58,121 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:02:58,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:02:58,157 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:02:58,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58 WrapperNode [2020-09-25 02:02:58,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:02:58,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:02:58,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:02:58,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:02:58,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58" (1/1) ... [2020-09-25 02:02:58,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58" (1/1) ... [2020-09-25 02:02:58,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58" (1/1) ... [2020-09-25 02:02:58,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58" (1/1) ... [2020-09-25 02:02:58,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58" (1/1) ... [2020-09-25 02:02:58,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58" (1/1) ... [2020-09-25 02:02:58,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58" (1/1) ... [2020-09-25 02:02:58,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:02:58,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:02:58,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:02:58,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:02:58,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58" (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 02:02:58,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:02:58,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:02:58,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 02:02:58,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:02:58,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:02:58,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:02:58,346 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 02:02:58,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:02:58,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:02:58,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:02:58,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:02:58,553 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:02:58,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:02:58 BoogieIcfgContainer [2020-09-25 02:02:58,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:02:58,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:02:58,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:02:58,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:02:58,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:02:57" (1/3) ... [2020-09-25 02:02:58,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:02:58, skipping insertion in model container [2020-09-25 02:02:58,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:58" (2/3) ... [2020-09-25 02:02:58,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:02:58, skipping insertion in model container [2020-09-25 02:02:58,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:02:58" (3/3) ... [2020-09-25 02:02:58,573 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-09-25 02:02:58,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:02:58,624 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:02:58,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:02:58,696 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:02:58,696 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:02:58,696 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:02:58,696 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:02:58,697 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:02:58,697 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:02:58,697 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:02:58,697 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:02:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:02:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:02:58,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:58,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:58,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:58,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:58,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 02:02:58,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:58,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-25 02:02:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:58,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:02:58,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 02:02:58,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:02:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:02:58,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:58,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:58,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:58,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:58,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:58,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:58,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:58,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:58,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:58,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:59,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:59,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:59,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:02:59,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:59,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:59,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:59,036 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 02:02:59,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-25 02:02:59,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:59,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:02:59,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271617329] [2020-09-25 02:02:59,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:02:59,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:59,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:02:59,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:02:59,070 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:02:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:59,194 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:02:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:02:59,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:02:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:59,210 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:02:59,211 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:02:59,216 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 02:02:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:02:59,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:02:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:02:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:02:59,267 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:02:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:59,268 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:02:59,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:02:59,268 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:02:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:02:59,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:59,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:59,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:02:59,272 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:59,272 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 02:02:59,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:59,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140226502] [2020-09-25 02:02:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:59,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:02:59,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 02:02:59,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:59,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:59,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:59,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:59,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:59,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:59,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:59,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:59,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:59,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:59,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:59,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 02:02:59,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:59,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:59,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:59,516 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 02:02:59,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140226502] [2020-09-25 02:02:59,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:59,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:02:59,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489057866] [2020-09-25 02:02:59,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:02:59,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:59,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:02:59,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:02:59,521 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:02:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:59,601 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:02:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:02:59,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:02:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:59,603 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:02:59,603 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:02:59,605 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 02:02:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:02:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:02:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:02:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:02:59,613 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:02:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:59,613 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:02:59,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:02:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:02:59,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:02:59,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:59,615 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] [2020-09-25 02:02:59,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:02:59,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:59,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:59,616 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 02:02:59,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:59,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105747770] [2020-09-25 02:02:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:59,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:00,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:03:00,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-09-25 02:03:00,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:03:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:00,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:00,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:00,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:00,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:00,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:00,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:00,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:00,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:03:00,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 02:03:00,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:03:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:00,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:00,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:00,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:00,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:03:00,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:00,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:00,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:00,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:03:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:00,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:00,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:00,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:00,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:03:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:03:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:03:00,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105747770] [2020-09-25 02:03:00,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:00,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:03:00,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402502483] [2020-09-25 02:03:00,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:03:00,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:00,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:03:00,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:03:00,488 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:03:00,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:00,606 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:03:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:03:00,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:03:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:00,610 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:03:00,610 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:03:00,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:03:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:03:00,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:03:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:03:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:03:00,628 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:03:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:00,629 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:03:00,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:03:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:03:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:03:00,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:00,633 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] [2020-09-25 02:03:00,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:03:00,633 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:00,634 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 02:03:00,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:00,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293428812] [2020-09-25 02:03:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:03:01,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 02:03:01,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:03:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:01,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:01,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:01,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:03:01,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:01,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:01,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 02:03:01,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:03:01,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:01,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:01,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:03:01,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:01,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:01,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:01,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:01,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:03:01,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:03:01,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293428812] [2020-09-25 02:03:01,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:01,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:03:01,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701578682] [2020-09-25 02:03:01,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:03:01,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:01,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:03:01,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:03:01,532 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 02:03:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:01,632 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:03:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:03:01,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 02:03:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:01,635 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:03:01,635 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:03:01,636 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 02:03:01,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:03:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:03:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:03:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:03:01,644 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:03:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:01,644 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:03:01,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:03:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:03:01,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:03:01,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:01,646 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 02:03:01,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:03:01,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:01,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:01,647 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 02:03:01,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:01,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111847424] [2020-09-25 02:03:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:02,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:03:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:03:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-25 02:03:02,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:03:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:02,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:02,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:02,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:02,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:02,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:02,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:02,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:03:02,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:03:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-25 02:03:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:03:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:02,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:02,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:02,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:02,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:03:02,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:02,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:02,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:02,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:02,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:03:02,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:02,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:03:02,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111847424] [2020-09-25 02:03:02,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:03:02,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:03:02,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712043798] [2020-09-25 02:03:02,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:03:02,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:02,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:03:02,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:03:02,754 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 8 states. [2020-09-25 02:03:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:02,910 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2020-09-25 02:03:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:03:02,911 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 02:03:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:02,913 INFO L225 Difference]: With dead ends: 75 [2020-09-25 02:03:02,913 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:03:02,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:03:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:03:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:03:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:03:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:03:02,922 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:03:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:02,923 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:03:02,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:03:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:03:02,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:03:02,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:02,925 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-25 02:03:02,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:03:02,926 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:02,926 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 02:03:02,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:02,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950100307] [2020-09-25 02:03:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:03:04,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1913 [2020-09-25 02:03:04,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:03:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:04,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:04,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:04,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:06,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:06,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2006 [2020-09-25 02:03:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:03:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:06,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 02:03:06,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:03:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:06,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:06,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:06,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:06,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:06,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:06,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:07,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:07,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:07,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:07,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:07,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 02:03:07,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:07,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:07,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:07,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 02:03:07,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:07,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:03:07,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950100307] [2020-09-25 02:03:07,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:07,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:03:07,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658406168] [2020-09-25 02:03:07,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:03:07,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:07,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:03:07,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:03:07,076 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 02:03:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:07,201 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-09-25 02:03:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:03:07,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 02:03:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:07,204 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:03:07,204 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:03:07,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:03:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:03:07,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:03:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:03:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:03:07,212 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-25 02:03:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:07,213 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:03:07,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:03:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:03:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:03:07,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:07,215 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:07,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:03:07,215 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:07,216 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 02:03:07,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:07,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060159535] [2020-09-25 02:03:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:12,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 02:03:12,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:03:12,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 02:03:12,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:03:12,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:12,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:12,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:12,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:12,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:12,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:03:12,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:12,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:17,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:03:17,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:03:17,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:03:17,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:17,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:03:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:17,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:17,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:17,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 02:03:17,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:17,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:17,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:17,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:03:17,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:17,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:17,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:03:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:17,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:17,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:19,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:19,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:19,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:03:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1906 [2020-09-25 02:03:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:03:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:19,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:19,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:19,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:20,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:20,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:20,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:20,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:03:20,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:20,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:20,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:20,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 65 proven. 81 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-09-25 02:03:20,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060159535] [2020-09-25 02:03:20,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:20,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:03:20,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495525856] [2020-09-25 02:03:20,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:03:20,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:20,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:03:20,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:03:20,295 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 12 states. [2020-09-25 02:03:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:20,647 INFO L93 Difference]: Finished difference Result 98 states and 133 transitions. [2020-09-25 02:03:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:03:20,647 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-09-25 02:03:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:20,651 INFO L225 Difference]: With dead ends: 98 [2020-09-25 02:03:20,652 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 02:03:20,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:03:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 02:03:20,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-25 02:03:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 02:03:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-09-25 02:03:20,665 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 87 [2020-09-25 02:03:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:20,666 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-09-25 02:03:20,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:03:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-09-25 02:03:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:03:20,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:20,668 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] [2020-09-25 02:03:20,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:03:20,669 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:20,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 02:03:20,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:20,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271522302] [2020-09-25 02:03:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:25,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:03:25,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:03:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:03:25,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:03:25,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:25,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:25,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:25,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:25,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:25,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:30,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:03:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 02:03:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 02:03:30,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:03:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:03:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:30,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:30,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:35,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:35,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:03:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4425 [2020-09-25 02:03:35,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:03:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:35,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:35,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:35,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-09-25 02:03:35,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:35,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:35,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:35,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:03:35,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:35,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:35,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:35,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:35,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:03:35,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:35,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:35,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:35,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:35,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:35,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:35,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:40,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:40,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:03:40,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 02:03:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:03:40,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:40,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:44,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:44,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:44,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:03:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3369 [2020-09-25 02:03:44,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:03:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:44,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:44,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:44,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:44,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:03:44,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:44,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:44,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:44,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:03:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:44,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:44,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:44,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:44,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:44,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:44,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:44,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:44,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:44,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:44,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:44,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:44,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:44,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:44,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:44,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:44,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:44,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:03:44,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:44,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:44,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:44,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:44,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:44,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:44,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:03:44,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:44,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:44,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:44,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:44,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 178 proven. 152 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-09-25 02:03:44,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271522302] [2020-09-25 02:03:44,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:44,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:03:44,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481939434] [2020-09-25 02:03:44,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:03:44,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:44,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:03:44,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:03:44,501 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 16 states. [2020-09-25 02:03:44,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:44,926 INFO L93 Difference]: Finished difference Result 118 states and 158 transitions. [2020-09-25 02:03:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 02:03:44,926 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2020-09-25 02:03:44,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:44,929 INFO L225 Difference]: With dead ends: 118 [2020-09-25 02:03:44,930 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 02:03:44,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:03:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 02:03:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2020-09-25 02:03:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:03:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2020-09-25 02:03:44,941 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 123 [2020-09-25 02:03:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:44,942 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2020-09-25 02:03:44,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:03:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2020-09-25 02:03:44,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 02:03:44,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:44,945 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:44,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:03:44,945 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:44,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:44,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1618484333, now seen corresponding path program 5 times [2020-09-25 02:03:44,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:44,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716616665] [2020-09-25 02:03:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 02:03:49,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:03:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:03:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:03:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:49,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:49,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:49,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking...