/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:28:08,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:28:08,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:28:08,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:28:08,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:28:08,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:28:08,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:28:08,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:28:08,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:28:08,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:28:08,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:28:08,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:28:08,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:28:08,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:28:08,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:28:08,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:28:08,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:28:08,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:28:08,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:28:08,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:28:08,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:28:08,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:28:08,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:28:08,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:28:08,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:28:08,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:28:08,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:28:08,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:28:08,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:28:08,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:28:08,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:28:08,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:28:08,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:28:08,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:28:08,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:28:08,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:28:08,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:28:08,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:28:08,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:28:08,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:28:08,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:28:08,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:28:08,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:28:08,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:28:08,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:28:08,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:28:08,656 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:28:08,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:28:08,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:28:08,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:28:08,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:28:08,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:28:08,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:28:08,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:28:08,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:28:08,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:28:08,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:28:08,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:28:08,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:28:08,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:28:08,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:28:08,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:28:08,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:28:08,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:28:08,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:28:08,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:28:08,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:28:08,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:28:08,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:28:08,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:28:08,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:28:08,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:28:08,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:28:08,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:28:08,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:28:08,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:28:08,979 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:28:08,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label42.c [2020-10-12 13:28:09,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc44ba347/c66cc69080e0457f90ece5af77ab69dd/FLAG4272e0e36 [2020-10-12 13:28:09,925 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:28:09,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label42.c [2020-10-12 13:28:09,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc44ba347/c66cc69080e0457f90ece5af77ab69dd/FLAG4272e0e36 [2020-10-12 13:28:10,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc44ba347/c66cc69080e0457f90ece5af77ab69dd [2020-10-12 13:28:10,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:28:10,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:28:10,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:28:10,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:28:10,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:28:10,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:28:10" (1/1) ... [2020-10-12 13:28:10,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285e86f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:10, skipping insertion in model container [2020-10-12 13:28:10,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:28:10" (1/1) ... [2020-10-12 13:28:10,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:28:10,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:28:12,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:28:12,627 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:28:13,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:28:13,320 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:28:13,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13 WrapperNode [2020-10-12 13:28:13,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:28:13,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:28:13,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:28:13,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:28:13,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13" (1/1) ... [2020-10-12 13:28:13,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13" (1/1) ... [2020-10-12 13:28:13,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13" (1/1) ... [2020-10-12 13:28:13,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13" (1/1) ... [2020-10-12 13:28:13,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13" (1/1) ... [2020-10-12 13:28:13,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13" (1/1) ... [2020-10-12 13:28:13,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13" (1/1) ... [2020-10-12 13:28:13,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:28:13,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:28:13,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:28:13,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:28:13,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:28:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:28:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:28:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:28:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:28:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:28:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:28:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:28:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:28:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:28:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:28:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:28:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:28:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:28:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:28:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:28:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:28:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:28:18,933 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:28:18,933 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:28:18,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:28:18 BoogieIcfgContainer [2020-10-12 13:28:18,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:28:18,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:28:18,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:28:18,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:28:18,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:28:10" (1/3) ... [2020-10-12 13:28:18,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22207b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:28:18, skipping insertion in model container [2020-10-12 13:28:18,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:13" (2/3) ... [2020-10-12 13:28:18,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22207b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:28:18, skipping insertion in model container [2020-10-12 13:28:18,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:28:18" (3/3) ... [2020-10-12 13:28:18,956 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label42.c [2020-10-12 13:28:18,968 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:28:18,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:28:18,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:28:19,028 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:28:19,028 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:28:19,029 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:28:19,029 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:28:19,029 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:28:19,029 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:28:19,029 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:28:19,029 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:28:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:28:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 13:28:19,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:19,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:28:19,081 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:19,088 INFO L82 PathProgramCache]: Analyzing trace with hash -957440739, now seen corresponding path program 1 times [2020-10-12 13:28:19,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:19,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464248402] [2020-10-12 13:28:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:19,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:19,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:19,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 13:28:19,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-12 13:28:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:28:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:28:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 13:28:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 13:28:19,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:19,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:19,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:19,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:28:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:19,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:28:19,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:28:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:28:19,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464248402] [2020-10-12 13:28:20,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:28:20,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:28:20,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133422161] [2020-10-12 13:28:20,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:28:20,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:20,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:28:20,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:28:20,035 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:28:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:28:29,806 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-12 13:28:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:28:29,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-12 13:28:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:28:29,856 INFO L225 Difference]: With dead ends: 2487 [2020-10-12 13:28:29,856 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:28:29,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:28:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:28:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-12 13:28:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-12 13:28:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-12 13:28:30,072 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 32 [2020-10-12 13:28:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:28:30,074 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-12 13:28:30,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:28:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-12 13:28:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 13:28:30,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:30,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:28:30,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:28:30,082 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:30,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:30,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1658444259, now seen corresponding path program 1 times [2020-10-12 13:28:30,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:30,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255341700] [2020-10-12 13:28:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:31,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:31,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 13:28:31,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:28:31,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-10-12 13:28:31,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:28:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:28:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:28:31,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:28:31,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:31,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:31,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:31,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:31,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:28:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:28:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:28:31,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:28:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:32,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:32,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:28:32,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 13:28:32,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:28:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:28:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:28:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:28:32,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255341700] [2020-10-12 13:28:32,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:28:32,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:28:32,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259392702] [2020-10-12 13:28:32,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:28:32,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:32,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:28:32,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:28:32,154 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 7 states. [2020-10-12 13:28:44,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:28:44,762 INFO L93 Difference]: Finished difference Result 4768 states and 7606 transitions. [2020-10-12 13:28:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:28:44,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-12 13:28:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:28:44,782 INFO L225 Difference]: With dead ends: 4768 [2020-10-12 13:28:44,782 INFO L226 Difference]: Without dead ends: 3210 [2020-10-12 13:28:44,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:28:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2020-10-12 13:28:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3163. [2020-10-12 13:28:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-12 13:28:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4586 transitions. [2020-10-12 13:28:44,884 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4586 transitions. Word has length 111 [2020-10-12 13:28:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:28:44,885 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 4586 transitions. [2020-10-12 13:28:44,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:28:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4586 transitions. [2020-10-12 13:28:44,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 13:28:44,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:44,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:28:44,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:28:44,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:44,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1070859528, now seen corresponding path program 1 times [2020-10-12 13:28:44,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:44,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519009576] [2020-10-12 13:28:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:45,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:46,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:46,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:28:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:28:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-12 13:28:46,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:28:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:28:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:28:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:46,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:28:46,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:46,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:28:46,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:28:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:46,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:46,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:46,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:46,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:28:46,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:28:46,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 13:28:46,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:28:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 13:28:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:28:46,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519009576] [2020-10-12 13:28:46,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:28:46,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:28:46,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818765061] [2020-10-12 13:28:46,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:28:46,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:46,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:28:46,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:28:46,833 INFO L87 Difference]: Start difference. First operand 3163 states and 4586 transitions. Second operand 6 states. [2020-10-12 13:28:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:28:57,033 INFO L93 Difference]: Finished difference Result 9546 states and 14072 transitions. [2020-10-12 13:28:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:28:57,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-12 13:28:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:28:57,076 INFO L225 Difference]: With dead ends: 9546 [2020-10-12 13:28:57,076 INFO L226 Difference]: Without dead ends: 6389 [2020-10-12 13:28:57,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:28:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2020-10-12 13:28:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6383. [2020-10-12 13:28:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6383 states. [2020-10-12 13:28:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6383 states to 6383 states and 8603 transitions. [2020-10-12 13:28:57,295 INFO L78 Accepts]: Start accepts. Automaton has 6383 states and 8603 transitions. Word has length 140 [2020-10-12 13:28:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:28:57,297 INFO L479 AbstractCegarLoop]: Abstraction has 6383 states and 8603 transitions. [2020-10-12 13:28:57,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:28:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 6383 states and 8603 transitions. [2020-10-12 13:28:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 13:28:57,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:57,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:28:57,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:28:57,308 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:57,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash -799256903, now seen corresponding path program 1 times [2020-10-12 13:28:57,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:57,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807159630] [2020-10-12 13:28:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:58,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:58,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 13:28:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:28:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-10-12 13:28:58,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:28:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:28:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 13:28:58,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:28:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:58,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:58,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:58,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:58,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:58,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:28:58,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:28:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:58,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:28:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:58,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:58,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:28:58,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:58,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 13:28:58,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:28:58,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:28:58,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:28:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:28:59,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807159630] [2020-10-12 13:28:59,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:28:59,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:28:59,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477031502] [2020-10-12 13:28:59,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:28:59,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:59,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:28:59,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:28:59,196 INFO L87 Difference]: Start difference. First operand 6383 states and 8603 transitions. Second operand 7 states. [2020-10-12 13:29:12,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:12,001 INFO L93 Difference]: Finished difference Result 19505 states and 27106 transitions. [2020-10-12 13:29:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:29:12,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-12 13:29:12,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:12,073 INFO L225 Difference]: With dead ends: 19505 [2020-10-12 13:29:12,073 INFO L226 Difference]: Without dead ends: 13128 [2020-10-12 13:29:12,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:29:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13128 states. [2020-10-12 13:29:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13128 to 13063. [2020-10-12 13:29:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13063 states. [2020-10-12 13:29:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13063 states to 13063 states and 17530 transitions. [2020-10-12 13:29:12,480 INFO L78 Accepts]: Start accepts. Automaton has 13063 states and 17530 transitions. Word has length 145 [2020-10-12 13:29:12,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:12,482 INFO L479 AbstractCegarLoop]: Abstraction has 13063 states and 17530 transitions. [2020-10-12 13:29:12,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13063 states and 17530 transitions. [2020-10-12 13:29:12,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-12 13:29:12,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:12,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:12,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:29:12,486 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:12,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:12,487 INFO L82 PathProgramCache]: Analyzing trace with hash 847267128, now seen corresponding path program 1 times [2020-10-12 13:29:12,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:12,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752669383] [2020-10-12 13:29:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:12,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:14,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:14,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-12 13:29:14,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-12 13:29:14,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:14,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:29:14,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:29:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:14,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:14,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:14,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:29:14,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:14,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:14,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:14,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:14,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:29:14,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:14,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-12 13:29:14,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:29:14,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:29:14,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752669383] [2020-10-12 13:29:14,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:29:14,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:29:14,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81996746] [2020-10-12 13:29:14,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:14,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:14,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:14,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:14,866 INFO L87 Difference]: Start difference. First operand 13063 states and 17530 transitions. Second operand 7 states. [2020-10-12 13:29:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:27,149 INFO L93 Difference]: Finished difference Result 27596 states and 37229 transitions. [2020-10-12 13:29:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:29:27,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-12 13:29:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:27,215 INFO L225 Difference]: With dead ends: 27596 [2020-10-12 13:29:27,215 INFO L226 Difference]: Without dead ends: 14539 [2020-10-12 13:29:27,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:29:27,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14539 states. [2020-10-12 13:29:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14539 to 14239. [2020-10-12 13:29:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14239 states. [2020-10-12 13:29:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14239 states to 14239 states and 19027 transitions. [2020-10-12 13:29:27,645 INFO L78 Accepts]: Start accepts. Automaton has 14239 states and 19027 transitions. Word has length 180 [2020-10-12 13:29:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:27,645 INFO L479 AbstractCegarLoop]: Abstraction has 14239 states and 19027 transitions. [2020-10-12 13:29:27,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 14239 states and 19027 transitions. [2020-10-12 13:29:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-12 13:29:27,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:27,653 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:27,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:29:27,655 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:27,656 INFO L82 PathProgramCache]: Analyzing trace with hash -597848975, now seen corresponding path program 1 times [2020-10-12 13:29:27,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:27,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073500253] [2020-10-12 13:29:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:28,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-12 13:29:29,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:29:29,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-12 13:29:29,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:29:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:29:29,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:29,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:29:29,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:29,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:29,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:29:29,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 13:29:29,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:29:29,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:29,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:29:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:29,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:29:29,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-12 13:29:29,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:29:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:29:29,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073500253] [2020-10-12 13:29:29,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:29,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:29:29,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091711983] [2020-10-12 13:29:29,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:29,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:29,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:29,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:29,717 INFO L87 Difference]: Start difference. First operand 14239 states and 19027 transitions. Second operand 7 states. [2020-10-12 13:29:53,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:53,034 INFO L93 Difference]: Finished difference Result 41027 states and 57169 transitions. [2020-10-12 13:29:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:29:53,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-12 13:29:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:53,172 INFO L225 Difference]: With dead ends: 41027 [2020-10-12 13:29:53,172 INFO L226 Difference]: Without dead ends: 27561 [2020-10-12 13:29:53,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:29:53,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27561 states. [2020-10-12 13:29:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27561 to 27395. [2020-10-12 13:29:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27395 states. [2020-10-12 13:29:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27395 states to 27395 states and 36259 transitions. [2020-10-12 13:29:54,871 INFO L78 Accepts]: Start accepts. Automaton has 27395 states and 36259 transitions. Word has length 220 [2020-10-12 13:29:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:54,871 INFO L479 AbstractCegarLoop]: Abstraction has 27395 states and 36259 transitions. [2020-10-12 13:29:54,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 27395 states and 36259 transitions. [2020-10-12 13:29:54,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-12 13:29:54,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:54,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:54,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:29:54,877 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:54,877 INFO L82 PathProgramCache]: Analyzing trace with hash 827674928, now seen corresponding path program 1 times [2020-10-12 13:29:54,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:54,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016265199] [2020-10-12 13:29:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:55,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:56,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:56,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-12 13:29:56,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:29:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-10-12 13:29:56,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:29:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 13:29:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:56,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:56,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:56,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:56,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:29:56,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:56,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:56,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:56,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:56,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:29:56,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 13:29:56,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:29:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:29:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:56,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:56,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 13:29:56,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:56,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-12 13:29:56,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:29:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:29:57,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016265199] [2020-10-12 13:29:57,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:57,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:29:57,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212132288] [2020-10-12 13:29:57,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:57,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:57,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:57,007 INFO L87 Difference]: Start difference. First operand 27395 states and 36259 transitions. Second operand 7 states. [2020-10-12 13:30:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:14,717 INFO L93 Difference]: Finished difference Result 55585 states and 79968 transitions. [2020-10-12 13:30:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:30:14,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-12 13:30:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:14,866 INFO L225 Difference]: With dead ends: 55585 [2020-10-12 13:30:14,866 INFO L226 Difference]: Without dead ends: 28157 [2020-10-12 13:30:15,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:30:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28157 states. [2020-10-12 13:30:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28157 to 27420. [2020-10-12 13:30:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27420 states. [2020-10-12 13:30:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27420 states to 27420 states and 35076 transitions. [2020-10-12 13:30:16,029 INFO L78 Accepts]: Start accepts. Automaton has 27420 states and 35076 transitions. Word has length 231 [2020-10-12 13:30:16,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:16,030 INFO L479 AbstractCegarLoop]: Abstraction has 27420 states and 35076 transitions. [2020-10-12 13:30:16,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:30:16,030 INFO L276 IsEmpty]: Start isEmpty. Operand 27420 states and 35076 transitions. [2020-10-12 13:30:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-12 13:30:16,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:16,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-12 13:30:16,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:30:16,035 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:16,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1336981696, now seen corresponding path program 1 times [2020-10-12 13:30:16,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:16,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031237661] [2020-10-12 13:30:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:16,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:16,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:18,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:18,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-12 13:30:18,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:30:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2790 [2020-10-12 13:30:18,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:30:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:30:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-10-12 13:30:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:19,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:19,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:19,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:19,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:19,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:19,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:30:19,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:30:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:19,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:19,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:19,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:30:19,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:19,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-12 13:30:19,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:19,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-12 13:30:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:19,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:30:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:19,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:19,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:30:19,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 13:30:19,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:30:19,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 13:30:20,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031237661] [2020-10-12 13:30:20,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:30:20,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:30:20,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003973484] [2020-10-12 13:30:20,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:20,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:20,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:20,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:20,048 INFO L87 Difference]: Start difference. First operand 27420 states and 35076 transitions. Second operand 7 states. [2020-10-12 13:30:37,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:37,122 INFO L93 Difference]: Finished difference Result 73443 states and 98238 transitions. [2020-10-12 13:30:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:30:37,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-12 13:30:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:37,314 INFO L225 Difference]: With dead ends: 73443 [2020-10-12 13:30:37,315 INFO L226 Difference]: Without dead ends: 46796 [2020-10-12 13:30:37,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:30:37,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46796 states. [2020-10-12 13:30:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46796 to 44929. [2020-10-12 13:30:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44929 states. [2020-10-12 13:30:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44929 states to 44929 states and 55390 transitions. [2020-10-12 13:30:39,927 INFO L78 Accepts]: Start accepts. Automaton has 44929 states and 55390 transitions. Word has length 255 [2020-10-12 13:30:39,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:39,928 INFO L479 AbstractCegarLoop]: Abstraction has 44929 states and 55390 transitions. [2020-10-12 13:30:39,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:30:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 44929 states and 55390 transitions. [2020-10-12 13:30:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 13:30:39,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:39,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:30:39,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:30:39,932 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:39,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1793082227, now seen corresponding path program 1 times [2020-10-12 13:30:39,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:39,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842610143] [2020-10-12 13:30:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:41,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:41,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-12 13:30:41,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:30:41,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-10-12 13:30:41,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:30:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:30:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 13:30:41,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:41,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:41,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:41,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:30:41,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:30:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:30:41,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:41,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:42,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:42,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:30:42,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 13:30:42,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:30:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:30:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:42,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:42,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:30:42,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:42,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-12 13:30:42,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:30:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 109 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:30:42,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842610143] [2020-10-12 13:30:42,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:30:42,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:30:42,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897836891] [2020-10-12 13:30:42,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:42,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:42,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:42,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:42,533 INFO L87 Difference]: Start difference. First operand 44929 states and 55390 transitions. Second operand 7 states. [2020-10-12 13:31:06,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:06,124 INFO L93 Difference]: Finished difference Result 111093 states and 140032 transitions. [2020-10-12 13:31:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:31:06,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-12 13:31:06,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:06,370 INFO L225 Difference]: With dead ends: 111093 [2020-10-12 13:31:06,370 INFO L226 Difference]: Without dead ends: 66937 [2020-10-12 13:31:06,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:31:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66937 states. [2020-10-12 13:31:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66937 to 65196. [2020-10-12 13:31:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65196 states. [2020-10-12 13:31:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65196 states to 65196 states and 80519 transitions. [2020-10-12 13:31:07,694 INFO L78 Accepts]: Start accepts. Automaton has 65196 states and 80519 transitions. Word has length 266 [2020-10-12 13:31:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:31:07,695 INFO L479 AbstractCegarLoop]: Abstraction has 65196 states and 80519 transitions. [2020-10-12 13:31:07,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:31:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 65196 states and 80519 transitions. [2020-10-12 13:31:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-12 13:31:07,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:31:07,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:31:07,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:31:07,704 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:31:07,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:31:07,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2126763044, now seen corresponding path program 1 times [2020-10-12 13:31:07,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:31:07,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113307010] [2020-10-12 13:31:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:31:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:07,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:08,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:08,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-12 13:31:08,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:08,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-12 13:31:08,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-12 13:31:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 13:31:08,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:08,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:08,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:08,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:08,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:08,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:31:08,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:08,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:08,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:31:08,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:08,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 13:31:08,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:08,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:09,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:31:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:09,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:09,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:09,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:31:09,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:09,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:31:09,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:09,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:09,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:09,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 13:31:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-12 13:31:09,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113307010] [2020-10-12 13:31:09,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:09,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:31:09,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451007981] [2020-10-12 13:31:09,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:31:09,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:09,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:31:09,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:31:09,401 INFO L87 Difference]: Start difference. First operand 65196 states and 80519 transitions. Second operand 5 states. [2020-10-12 13:31:26,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:26,688 INFO L93 Difference]: Finished difference Result 157604 states and 201035 transitions. [2020-10-12 13:31:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:31:26,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-12 13:31:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:27,045 INFO L225 Difference]: With dead ends: 157604 [2020-10-12 13:31:27,045 INFO L226 Difference]: Without dead ends: 93181 [2020-10-12 13:31:27,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:31:27,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93181 states. [2020-10-12 13:31:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93181 to 93133. [2020-10-12 13:31:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93133 states. [2020-10-12 13:31:28,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93133 states to 93133 states and 112816 transitions. [2020-10-12 13:31:28,848 INFO L78 Accepts]: Start accepts. Automaton has 93133 states and 112816 transitions. Word has length 317 [2020-10-12 13:31:28,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:31:28,850 INFO L479 AbstractCegarLoop]: Abstraction has 93133 states and 112816 transitions. [2020-10-12 13:31:28,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:31:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 93133 states and 112816 transitions. [2020-10-12 13:31:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-12 13:31:28,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:31:28,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:31:28,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:31:28,858 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:31:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:31:28,859 INFO L82 PathProgramCache]: Analyzing trace with hash -222208364, now seen corresponding path program 1 times [2020-10-12 13:31:28,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:31:28,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884062273] [2020-10-12 13:31:28,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:31:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:29,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:31,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:31,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-12 13:31:31,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:31:31,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2536 [2020-10-12 13:31:31,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:31:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-12 13:31:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:31:31,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:31,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:31,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:31,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:31,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:31:31,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:31,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:31,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:31,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:31:31,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:31,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:31:31,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:31:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:31:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:32,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:32,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:31:32,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:32,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 13:31:32,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:31:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:31:32,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:31:32,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884062273] [2020-10-12 13:31:32,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:32,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:31:32,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136538279] [2020-10-12 13:31:32,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:31:32,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:32,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:31:32,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:31:32,438 INFO L87 Difference]: Start difference. First operand 93133 states and 112816 transitions. Second operand 7 states. [2020-10-12 13:31:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:52,765 INFO L93 Difference]: Finished difference Result 208222 states and 254573 transitions. [2020-10-12 13:31:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:31:52,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-12 13:31:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:53,284 INFO L225 Difference]: With dead ends: 208222 [2020-10-12 13:31:53,285 INFO L226 Difference]: Without dead ends: 115862