/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:58:43,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:58:43,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:58:43,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:58:43,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:58:43,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:58:43,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:58:43,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:58:43,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:58:43,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:58:43,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:58:43,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:58:43,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:58:43,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:58:43,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:58:43,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:58:43,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:58:43,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:58:43,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:58:43,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:58:43,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:58:43,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:58:43,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:58:43,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:58:43,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:58:43,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:58:43,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:58:43,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:58:43,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:58:43,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:58:43,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:58:43,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:58:43,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:58:43,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:58:43,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:58:43,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:58:43,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:58:43,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:58:43,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:58:43,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:58:43,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:58:43,444 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 09:58:43,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:58:43,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:58:43,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:58:43,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:58:43,494 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:58:43,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:58:43,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:58:43,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:58:43,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:58:43,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:58:43,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:58:43,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:58:43,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:58:43,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:58:43,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:58:43,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:58:43,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:58:43,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:58:43,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:58:43,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:58:43,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:58:43,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:58:43,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:58:43,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:58:43,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:58:43,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:58:43,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:58:43,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:58:43,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:58:43,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 09:58:43,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:58:44,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:58:44,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:58:44,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:58:44,021 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:58:44,022 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-25 09:58:44,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/793f083e3/8024e26007154d23b160a359d6a2b92a/FLAGc1326b79f [2020-09-25 09:58:44,698 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:58:44,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-25 09:58:44,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/793f083e3/8024e26007154d23b160a359d6a2b92a/FLAGc1326b79f [2020-09-25 09:58:45,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/793f083e3/8024e26007154d23b160a359d6a2b92a [2020-09-25 09:58:45,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:58:45,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:58:45,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:58:45,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:58:45,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:58:45,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:45" (1/1) ... [2020-09-25 09:58:45,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733bf58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45, skipping insertion in model container [2020-09-25 09:58:45,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:45" (1/1) ... [2020-09-25 09:58:45,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:58:45,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:58:45,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:58:45,356 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:58:45,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:58:45,396 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:58:45,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45 WrapperNode [2020-09-25 09:58:45,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:58:45,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:58:45,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:58:45,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:58:45,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45" (1/1) ... [2020-09-25 09:58:45,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45" (1/1) ... [2020-09-25 09:58:45,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45" (1/1) ... [2020-09-25 09:58:45,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45" (1/1) ... [2020-09-25 09:58:45,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45" (1/1) ... [2020-09-25 09:58:45,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45" (1/1) ... [2020-09-25 09:58:45,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45" (1/1) ... [2020-09-25 09:58:45,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:58:45,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:58:45,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:58:45,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:58:45,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45" (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 09:58:45,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:58:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:58:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 09:58:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:58:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:58:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:58:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 09:58:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:58:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:58:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:58:45,811 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:58:45,812 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:58:45,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:58:45 BoogieIcfgContainer [2020-09-25 09:58:45,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:58:45,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:58:45,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:58:45,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:58:45,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:58:45" (1/3) ... [2020-09-25 09:58:45,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691a91c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:58:45, skipping insertion in model container [2020-09-25 09:58:45,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:45" (2/3) ... [2020-09-25 09:58:45,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691a91c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:58:45, skipping insertion in model container [2020-09-25 09:58:45,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:58:45" (3/3) ... [2020-09-25 09:58:45,829 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci05.c [2020-09-25 09:58:45,842 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:58:45,855 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:58:45,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:58:45,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:58:45,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:58:45,969 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:58:45,969 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:58:45,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:58:45,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:58:45,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:58:45,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:58:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 09:58:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 09:58:46,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:46,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:46,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:46,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-25 09:58:46,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:46,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931089391] [2020-09-25 09:58:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:58:46,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 09:58:46,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:58:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:58:46,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 09:58:46,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:46,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:58:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:46,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:58:46,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:58:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,426 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 09:58:46,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931089391] [2020-09-25 09:58:46,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:58:46,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:58:46,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005333375] [2020-09-25 09:58:46,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:58:46,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:46,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:58:46,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:58:46,471 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-25 09:58:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:46,608 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-25 09:58:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:58:46,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 09:58:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:46,626 INFO L225 Difference]: With dead ends: 48 [2020-09-25 09:58:46,626 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 09:58:46,631 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 09:58:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 09:58:46,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 09:58:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 09:58:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 09:58:46,694 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-25 09:58:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:46,695 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 09:58:46,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:58:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 09:58:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 09:58:46,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:46,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:46,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:58:46,699 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:46,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:46,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-25 09:58:46,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:46,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470315668] [2020-09-25 09:58:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 09:58:46,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 09:58:46,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:58:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:58:46,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:58:46,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:58:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:58:46,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 09:58:46,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:58:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,957 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 09:58:46,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470315668] [2020-09-25 09:58:46,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:58:46,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:58:46,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791813483] [2020-09-25 09:58:46,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:58:46,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:46,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:58:46,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:58:46,962 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-25 09:58:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:47,031 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 09:58:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:58:47,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 09:58:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:47,033 INFO L225 Difference]: With dead ends: 38 [2020-09-25 09:58:47,033 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 09:58:47,035 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 09:58:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 09:58:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-25 09:58:47,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 09:58:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 09:58:47,043 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-25 09:58:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:47,043 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 09:58:47,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:58:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 09:58:47,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 09:58:47,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:47,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:47,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:58:47,049 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:47,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:47,049 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-25 09:58:47,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:47,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428129614] [2020-09-25 09:58:47,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:58:47,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:58:47,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-09-25 09:58:47,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:58:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:58:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:47,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:47,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:47,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:47,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:58:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:58:47,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 09:58:47,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:58:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:58:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:47,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:58:47,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:58:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:47,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:58:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:47,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:58:47,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:48,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:58:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 09:58:48,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428129614] [2020-09-25 09:58:48,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:48,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:58:48,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327382320] [2020-09-25 09:58:48,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:58:48,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:48,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:58:48,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:58:48,016 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 09:58:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:48,147 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-25 09:58:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:58:48,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 09:58:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:48,150 INFO L225 Difference]: With dead ends: 68 [2020-09-25 09:58:48,150 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 09:58:48,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:58:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 09:58:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 09:58:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 09:58:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 09:58:48,161 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 09:58:48,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:48,162 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 09:58:48,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:58:48,162 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 09:58:48,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 09:58:48,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:48,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:48,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:58:48,165 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:48,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:48,166 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-25 09:58:48,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:48,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626112197] [2020-09-25 09:58:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:48,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:48,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 09:58:48,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 09:58:48,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:48,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:58:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:58:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:48,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:48,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:48,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:48,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:48,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:48,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:48,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:48,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:58:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:48,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:48,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:48,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:58:48,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 09:58:48,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:48,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:58:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:48,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:58:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:48,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:48,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:58:48,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:58:48,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:48,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:48,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:58:48,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:58:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:48,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:48,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:48,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:58:48,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:48,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:58:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 09:58:48,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626112197] [2020-09-25 09:58:48,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:48,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:58:48,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319482620] [2020-09-25 09:58:48,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:58:48,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:48,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:58:48,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:58:48,984 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 09:58:49,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:49,093 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2020-09-25 09:58:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:58:49,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 09:58:49,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:49,097 INFO L225 Difference]: With dead ends: 74 [2020-09-25 09:58:49,097 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 09:58:49,098 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 09:58:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 09:58:49,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-09-25 09:58:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 09:58:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 09:58:49,113 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 36 [2020-09-25 09:58:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:49,113 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 09:58:49,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:58:49,114 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 09:58:49,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 09:58:49,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:49,117 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:49,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:58:49,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:49,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:49,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1970096676, now seen corresponding path program 2 times [2020-09-25 09:58:49,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:49,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946746256] [2020-09-25 09:58:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:53,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 09:58:53,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:58:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4259 [2020-09-25 09:58:53,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:53,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:58:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:58:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:53,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:53,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:53,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:53,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:53,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:53,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:53,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:58:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:58:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:58:54,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1392 [2020-09-25 09:58:54,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:54,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:58:54,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:58:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:58:54,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 09:58:54,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:58:54,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:58:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:54,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:54,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:58:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:54,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:54,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:54,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 09:58:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:54,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:58:54,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:58:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 09:58:54,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946746256] [2020-09-25 09:58:54,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:54,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:58:54,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838303601] [2020-09-25 09:58:54,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:58:54,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:54,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:58:54,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:58:54,983 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 6 states. [2020-09-25 09:58:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:55,052 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2020-09-25 09:58:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:58:55,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 09:58:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:55,055 INFO L225 Difference]: With dead ends: 86 [2020-09-25 09:58:55,055 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 09:58:55,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:58:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 09:58:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 62. [2020-09-25 09:58:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 09:58:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 09:58:55,070 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 52 [2020-09-25 09:58:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:55,071 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 09:58:55,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:58:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 09:58:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 09:58:55,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:55,074 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:55,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:58:55,074 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:55,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:55,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1486829505, now seen corresponding path program 2 times [2020-09-25 09:58:55,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:55,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053923826] [2020-09-25 09:58:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:56,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:58,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:58,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 09:58:58,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:58:58,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3811 [2020-09-25 09:58:58,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:58,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:58:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:58:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:58,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:58,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:58,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:58,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:58,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:58:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:58,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 09:59:02,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:59:02,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3369 [2020-09-25 09:59:02,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:02,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 09:59:02,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:02,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:02,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 09:59:02,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:59:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:02,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:02,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:02,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:02,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:02,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:02,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 09:59:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:59:02,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 09:59:02,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053923826] [2020-09-25 09:59:02,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:02,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:59:02,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298317912] [2020-09-25 09:59:02,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:59:02,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:02,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:59:02,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:59:02,577 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 7 states. [2020-09-25 09:59:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:02,715 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2020-09-25 09:59:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:59:02,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-09-25 09:59:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:02,720 INFO L225 Difference]: With dead ends: 84 [2020-09-25 09:59:02,720 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 09:59:02,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:59:02,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 09:59:02,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2020-09-25 09:59:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 09:59:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2020-09-25 09:59:02,749 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 53 [2020-09-25 09:59:02,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:02,749 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-09-25 09:59:02,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:59:02,754 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2020-09-25 09:59:02,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 09:59:02,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:02,762 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:02,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:59:02,763 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:02,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:02,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1801616585, now seen corresponding path program 3 times [2020-09-25 09:59:02,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:02,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223768608] [2020-09-25 09:59:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:07,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 09:59:07,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 09:59:07,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 09:59:07,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:07,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:59:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:59:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 09:59:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:07,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:07,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:07,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:07,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:07,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:07,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:07,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:07,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:59:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 09:59:12,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 09:59:12,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:59:12,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:12,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:59:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:59:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 09:59:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:12,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:12,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:12,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 09:59:12,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:12,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:59:12,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:12,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:59:12,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:12,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:12,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:12,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:12,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:12,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:59:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:13,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:13,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 09:59:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:14,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:14,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 09:59:14,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:59:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-09-25 09:59:14,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:14,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:59:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:15,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:15,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:15,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 09:59:15,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:15,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:59:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:15,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:15,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:15,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:15,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:15,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:15,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:15,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:15,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:15,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:59:15,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:15,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:15,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:15,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 09:59:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:15,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:15,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:59:15,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:15,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:15,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:15,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 59 proven. 65 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 09:59:15,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223768608] [2020-09-25 09:59:15,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:15,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:59:15,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180244098] [2020-09-25 09:59:15,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:59:15,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:15,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:59:15,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:59:15,243 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand 10 states. [2020-09-25 09:59:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:15,529 INFO L93 Difference]: Finished difference Result 124 states and 182 transitions. [2020-09-25 09:59:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:59:15,531 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 09:59:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:15,532 INFO L225 Difference]: With dead ends: 124 [2020-09-25 09:59:15,532 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 09:59:15,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:59:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 09:59:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-09-25 09:59:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 09:59:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-09-25 09:59:15,546 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 87 [2020-09-25 09:59:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:15,547 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-09-25 09:59:15,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:59:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-09-25 09:59:15,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 09:59:15,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:15,549 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:15,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:59:15,550 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:15,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:15,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1419436827, now seen corresponding path program 1 times [2020-09-25 09:59:15,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:15,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486172344] [2020-09-25 09:59:15,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:17,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:20,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 09:59:20,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:59:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:59:20,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:20,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:59:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:59:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:59:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:20,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:20,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:20,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:20,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:20,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:20,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:20,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:20,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:59:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:21,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:21,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:25,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 09:59:25,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:59:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 09:59:25,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:25,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:59:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:59:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:59:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:25,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:25,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:59:25,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:25,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-25 09:59:25,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:25,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:59:25,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:25,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:26,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:26,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:26,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:59:26,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:26,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:26,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:26,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:26,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:26,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:59:26,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:26,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 09:59:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:26,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:31,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 09:59:31,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:59:31,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:59:31,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:31,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 09:59:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:31,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:31,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:31,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:59:31,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:31,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 09:59:31,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:31,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:59:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:31,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:31,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:31,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:31,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:31,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:31,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:31,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:31,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:31,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:31,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:31,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:31,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:31,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:31,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:31,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 09:59:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:31,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:31,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:59:31,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:31,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:31,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 79 proven. 79 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 09:59:31,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486172344] [2020-09-25 09:59:31,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:31,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:59:31,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381834157] [2020-09-25 09:59:31,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:59:31,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:31,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:59:31,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:59:31,273 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 10 states. [2020-09-25 09:59:31,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:31,495 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2020-09-25 09:59:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:59:31,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-09-25 09:59:31,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:31,497 INFO L225 Difference]: With dead ends: 111 [2020-09-25 09:59:31,497 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 09:59:31,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:59:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 09:59:31,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 53. [2020-09-25 09:59:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 09:59:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-09-25 09:59:31,505 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 91 [2020-09-25 09:59:31,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:31,506 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-09-25 09:59:31,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:59:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-09-25 09:59:31,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 09:59:31,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:31,509 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:31,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:59:31,509 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:31,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 4 times [2020-09-25 09:59:31,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:31,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165714786] [2020-09-25 09:59:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:31,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 09:59:36,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 09:59:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:59:36,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:59:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:59:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 09:59:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:36,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:36,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:59:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking...