/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:03:20,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:03:20,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:03:20,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:03:20,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:03:20,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:03:20,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:03:20,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:03:20,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:03:20,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:03:20,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:03:20,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:03:20,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:03:20,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:03:20,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:03:20,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:03:20,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:03:20,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:03:20,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:03:20,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:03:20,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:03:20,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:03:20,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:03:20,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:03:20,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:03:20,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:03:20,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:03:20,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:03:20,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:03:20,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:03:20,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:03:20,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:03:20,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:03:20,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:03:20,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:03:20,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:03:20,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:03:20,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:03:20,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:03:20,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:03:20,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:03:20,668 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 [2020-10-27 19:03:20,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:03:20,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:03:20,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:03:20,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:03:20,707 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:03:20,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:03:20,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:03:20,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:03:20,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:03:20,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:03:20,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:03:20,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:03:20,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:03:20,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:03:20,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:03:20,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:03:20,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:03:20,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:03:20,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:03:20,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:03:20,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:03:20,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:03:20,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:03:20,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:03:20,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:03:20,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:03:20,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:03:20,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:03:20,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:03:20,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:03:21,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:03:21,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:03:21,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:03:21,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:03:21,306 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:03:21,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59.c [2020-10-27 19:03:21,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9660c747/b7285fd47cd34299bd044c27f2861d3e/FLAG611017b48 [2020-10-27 19:03:22,746 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:03:22,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label59.c [2020-10-27 19:03:22,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9660c747/b7285fd47cd34299bd044c27f2861d3e/FLAG611017b48 [2020-10-27 19:03:23,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9660c747/b7285fd47cd34299bd044c27f2861d3e [2020-10-27 19:03:23,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:03:23,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:03:23,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:03:23,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:03:23,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:03:23,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:03:23" (1/1) ... [2020-10-27 19:03:23,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f3b34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:23, skipping insertion in model container [2020-10-27 19:03:23,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:03:23" (1/1) ... [2020-10-27 19:03:23,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:03:23,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:03:24,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:03:24,676 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:03:25,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:03:25,516 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:03:25,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25 WrapperNode [2020-10-27 19:03:25,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:03:25,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:03:25,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:03:25,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:03:25,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25" (1/1) ... [2020-10-27 19:03:25,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25" (1/1) ... [2020-10-27 19:03:25,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25" (1/1) ... [2020-10-27 19:03:25,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25" (1/1) ... [2020-10-27 19:03:25,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25" (1/1) ... [2020-10-27 19:03:25,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25" (1/1) ... [2020-10-27 19:03:25,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25" (1/1) ... [2020-10-27 19:03:25,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:03:25,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:03:25,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:03:25,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:03:25,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25" (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 [2020-10-27 19:03:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:03:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:03:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:03:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:03:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:03:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:03:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:03:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:03:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:03:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:03:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:03:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:03:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:03:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:03:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:03:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:03:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:03:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:03:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:03:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:03:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:03:37,933 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:03:37,934 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:03:37,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:03:37 BoogieIcfgContainer [2020-10-27 19:03:37,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:03:37,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:03:37,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:03:37,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:03:37,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:03:23" (1/3) ... [2020-10-27 19:03:37,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792a9fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:03:37, skipping insertion in model container [2020-10-27 19:03:37,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:25" (2/3) ... [2020-10-27 19:03:37,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792a9fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:03:37, skipping insertion in model container [2020-10-27 19:03:37,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:03:37" (3/3) ... [2020-10-27 19:03:37,956 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label59.c [2020-10-27 19:03:37,973 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:03:37,982 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:03:38,000 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:03:38,056 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:03:38,057 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:03:38,057 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:03:38,057 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:03:38,057 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:03:38,058 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:03:38,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:03:38,058 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:03:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 19:03:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 19:03:38,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:03:38,124 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:03:38,125 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:03:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:03:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1326414411, now seen corresponding path program 1 times [2020-10-27 19:03:38,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:03:38,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127439881] [2020-10-27 19:03:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:03:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:38,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:39,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:39,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 19:03:39,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:39,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-10-27 19:03:39,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:03:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:03:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 19:03:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:03:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:03:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:39,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:39,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:03:39,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:39,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 19:03:39,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:03:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:03:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:03:39,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127439881] [2020-10-27 19:03:39,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:03:39,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:03:39,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793739438] [2020-10-27 19:03:39,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:03:39,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:03:39,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:03:39,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:03:39,361 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-27 19:03:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:03:52,877 INFO L93 Difference]: Finished difference Result 1734 states and 3143 transitions. [2020-10-27 19:03:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:03:52,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-27 19:03:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:03:52,918 INFO L225 Difference]: With dead ends: 1734 [2020-10-27 19:03:52,918 INFO L226 Difference]: Without dead ends: 1048 [2020-10-27 19:03:52,936 INFO L677 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 [2020-10-27 19:03:52,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-10-27 19:03:53,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1029. [2020-10-27 19:03:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-10-27 19:03:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1764 transitions. [2020-10-27 19:03:53,174 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1764 transitions. Word has length 39 [2020-10-27 19:03:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:03:53,175 INFO L481 AbstractCegarLoop]: Abstraction has 1029 states and 1764 transitions. [2020-10-27 19:03:53,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:03:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1764 transitions. [2020-10-27 19:03:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 19:03:53,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:03:53,184 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, 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] [2020-10-27 19:03:53,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:03:53,185 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:03:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:03:53,188 INFO L82 PathProgramCache]: Analyzing trace with hash -509543706, now seen corresponding path program 1 times [2020-10-27 19:03:53,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:03:53,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016077821] [2020-10-27 19:03:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:03:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:54,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:54,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 19:03:54,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:03:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1571 [2020-10-27 19:03:54,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:03:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 19:03:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 19:03:54,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:03:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:03:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:54,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:54,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:03:54,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:03:54,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:03:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:03:54,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:54,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:03:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:55,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:55,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:03:55,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:55,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 19:03:55,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:03:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 19:03:55,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:03:55,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016077821] [2020-10-27 19:03:55,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:03:55,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:03:55,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513224834] [2020-10-27 19:03:55,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:03:55,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:03:55,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:03:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:03:55,195 INFO L87 Difference]: Start difference. First operand 1029 states and 1764 transitions. Second operand 5 states. [2020-10-27 19:04:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:07,811 INFO L93 Difference]: Finished difference Result 2947 states and 5139 transitions. [2020-10-27 19:04:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:04:07,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 19:04:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:07,825 INFO L225 Difference]: With dead ends: 2947 [2020-10-27 19:04:07,825 INFO L226 Difference]: Without dead ends: 1924 [2020-10-27 19:04:07,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:04:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-10-27 19:04:07,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1913. [2020-10-27 19:04:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-10-27 19:04:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2900 transitions. [2020-10-27 19:04:07,914 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2900 transitions. Word has length 108 [2020-10-27 19:04:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:07,917 INFO L481 AbstractCegarLoop]: Abstraction has 1913 states and 2900 transitions. [2020-10-27 19:04:07,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:04:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2900 transitions. [2020-10-27 19:04:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 19:04:07,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:07,928 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, 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] [2020-10-27 19:04:07,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:04:07,928 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:07,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:07,929 INFO L82 PathProgramCache]: Analyzing trace with hash 836137738, now seen corresponding path program 1 times [2020-10-27 19:04:07,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:07,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517356322] [2020-10-27 19:04:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:07,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:08,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:08,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 19:04:08,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:08,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-27 19:04:08,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:04:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 19:04:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 19:04:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:09,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:09,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:09,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:04:09,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:09,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:09,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:04:09,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 19:04:09,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:09,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 19:04:09,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:09,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517356322] [2020-10-27 19:04:09,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:04:09,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:04:09,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884604246] [2020-10-27 19:04:09,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:04:09,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:09,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:04:09,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:09,246 INFO L87 Difference]: Start difference. First operand 1913 states and 2900 transitions. Second operand 5 states. [2020-10-27 19:04:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:22,465 INFO L93 Difference]: Finished difference Result 5582 states and 8593 transitions. [2020-10-27 19:04:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:04:22,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 19:04:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:22,489 INFO L225 Difference]: With dead ends: 5582 [2020-10-27 19:04:22,489 INFO L226 Difference]: Without dead ends: 3675 [2020-10-27 19:04:22,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:04:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2020-10-27 19:04:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3667. [2020-10-27 19:04:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3667 states. [2020-10-27 19:04:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 4985 transitions. [2020-10-27 19:04:22,617 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 4985 transitions. Word has length 110 [2020-10-27 19:04:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:22,619 INFO L481 AbstractCegarLoop]: Abstraction has 3667 states and 4985 transitions. [2020-10-27 19:04:22,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:04:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 4985 transitions. [2020-10-27 19:04:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 19:04:22,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:22,621 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, 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] [2020-10-27 19:04:22,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:04:22,622 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:22,622 INFO L82 PathProgramCache]: Analyzing trace with hash -228461778, now seen corresponding path program 1 times [2020-10-27 19:04:22,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:22,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840927118] [2020-10-27 19:04:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:22,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:23,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:23,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 19:04:23,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-27 19:04:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:04:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 19:04:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 19:04:23,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:04:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:23,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:23,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:23,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:23,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:04:23,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:23,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:23,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:04:23,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 19:04:23,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 19:04:23,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:23,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840927118] [2020-10-27 19:04:23,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:04:23,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:04:23,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56044842] [2020-10-27 19:04:23,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:04:23,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:23,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:04:23,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:23,712 INFO L87 Difference]: Start difference. First operand 3667 states and 4985 transitions. Second operand 5 states. [2020-10-27 19:04:41,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:41,117 INFO L93 Difference]: Finished difference Result 9128 states and 12863 transitions. [2020-10-27 19:04:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:04:41,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-27 19:04:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:41,153 INFO L225 Difference]: With dead ends: 9128 [2020-10-27 19:04:41,153 INFO L226 Difference]: Without dead ends: 5467 [2020-10-27 19:04:41,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:04:41,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2020-10-27 19:04:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 5455. [2020-10-27 19:04:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5455 states. [2020-10-27 19:04:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 7586 transitions. [2020-10-27 19:04:41,329 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 7586 transitions. Word has length 112 [2020-10-27 19:04:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:41,331 INFO L481 AbstractCegarLoop]: Abstraction has 5455 states and 7586 transitions. [2020-10-27 19:04:41,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:04:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 7586 transitions. [2020-10-27 19:04:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 19:04:41,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:41,333 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, 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] [2020-10-27 19:04:41,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:04:41,334 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:41,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:41,335 INFO L82 PathProgramCache]: Analyzing trace with hash -332193474, now seen corresponding path program 1 times [2020-10-27 19:04:41,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:41,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666659758] [2020-10-27 19:04:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:41,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:42,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:42,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 19:04:42,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:42,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-27 19:04:42,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:42,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:04:42,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 19:04:42,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 19:04:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:42,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:42,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:04:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:42,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 19:04:42,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 19:04:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 19:04:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:42,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666659758] [2020-10-27 19:04:42,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:04:42,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:04:42,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793074595] [2020-10-27 19:04:42,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:04:42,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:42,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:04:42,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:04:42,959 INFO L87 Difference]: Start difference. First operand 5455 states and 7586 transitions. Second operand 6 states. [2020-10-27 19:05:02,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:02,025 INFO L93 Difference]: Finished difference Result 16166 states and 22885 transitions. [2020-10-27 19:05:02,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:02,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2020-10-27 19:05:02,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:02,092 INFO L225 Difference]: With dead ends: 16166 [2020-10-27 19:05:02,092 INFO L226 Difference]: Without dead ends: 10717 [2020-10-27 19:05:02,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:05:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10717 states. [2020-10-27 19:05:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10717 to 7240. [2020-10-27 19:05:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7240 states. [2020-10-27 19:05:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10524 transitions. [2020-10-27 19:05:02,430 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10524 transitions. Word has length 125 [2020-10-27 19:05:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:02,430 INFO L481 AbstractCegarLoop]: Abstraction has 7240 states and 10524 transitions. [2020-10-27 19:05:02,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:05:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10524 transitions. [2020-10-27 19:05:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 19:05:02,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:02,438 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, 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] [2020-10-27 19:05:02,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:05:02,439 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:02,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:02,440 INFO L82 PathProgramCache]: Analyzing trace with hash 634862786, now seen corresponding path program 1 times [2020-10-27 19:05:02,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:02,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587411070] [2020-10-27 19:05:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:03,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 19:05:03,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:05:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1491 [2020-10-27 19:05:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 19:05:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 19:05:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:04,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:04,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:04,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:04,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:05:04,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:04,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:04,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:05:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 19:05:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 19:05:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:05:04,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587411070] [2020-10-27 19:05:04,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:04,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:04,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778756835] [2020-10-27 19:05:04,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:04,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:04,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:04,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:04,460 INFO L87 Difference]: Start difference. First operand 7240 states and 10524 transitions. Second operand 5 states. [2020-10-27 19:05:07,572 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 19:05:17,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:17,039 INFO L93 Difference]: Finished difference Result 14530 states and 21197 transitions. [2020-10-27 19:05:17,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:17,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 19:05:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:17,092 INFO L225 Difference]: With dead ends: 14530 [2020-10-27 19:05:17,092 INFO L226 Difference]: Without dead ends: 7248 [2020-10-27 19:05:17,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:05:17,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2020-10-27 19:05:17,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 7240. [2020-10-27 19:05:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7240 states. [2020-10-27 19:05:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10518 transitions. [2020-10-27 19:05:17,357 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10518 transitions. Word has length 127 [2020-10-27 19:05:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:17,357 INFO L481 AbstractCegarLoop]: Abstraction has 7240 states and 10518 transitions. [2020-10-27 19:05:17,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10518 transitions. [2020-10-27 19:05:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-27 19:05:17,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:17,367 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:05:17,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:05:17,367 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:17,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1829284621, now seen corresponding path program 1 times [2020-10-27 19:05:17,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:17,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005581434] [2020-10-27 19:05:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:17,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:18,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:21,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:21,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 19:05:21,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:05:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3746 [2020-10-27 19:05:21,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:21,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 19:05:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 19:05:21,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:21,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:21,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:21,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:21,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:21,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:05:21,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:21,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:21,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:05:21,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 19:05:21,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 19:05:21,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 19:05:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:21,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:21,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 19:05:21,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:21,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 19:05:21,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:05:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 19:05:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:05:21,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005581434] [2020-10-27 19:05:21,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:21,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:05:21,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066490091] [2020-10-27 19:05:21,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:05:21,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:21,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:05:21,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:05:21,855 INFO L87 Difference]: Start difference. First operand 7240 states and 10518 transitions. Second operand 7 states. [2020-10-27 19:05:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:40,278 INFO L93 Difference]: Finished difference Result 18214 states and 27566 transitions. [2020-10-27 19:05:40,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:05:40,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-27 19:05:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:40,332 INFO L225 Difference]: With dead ends: 18214 [2020-10-27 19:05:40,332 INFO L226 Difference]: Without dead ends: 10980 [2020-10-27 19:05:40,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:05:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10980 states. [2020-10-27 19:05:40,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10980 to 10478. [2020-10-27 19:05:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10478 states. [2020-10-27 19:05:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10478 states to 10478 states and 15653 transitions. [2020-10-27 19:05:40,668 INFO L78 Accepts]: Start accepts. Automaton has 10478 states and 15653 transitions. Word has length 208 [2020-10-27 19:05:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:40,668 INFO L481 AbstractCegarLoop]: Abstraction has 10478 states and 15653 transitions. [2020-10-27 19:05:40,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:05:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 10478 states and 15653 transitions. [2020-10-27 19:05:40,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 19:05:40,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:40,680 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:05:40,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:05:40,680 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:40,681 INFO L82 PathProgramCache]: Analyzing trace with hash -932034713, now seen corresponding path program 1 times [2020-10-27 19:05:40,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:40,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934670401] [2020-10-27 19:05:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:40,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:42,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:43,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:43,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 19:05:43,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:05:43,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3196 [2020-10-27 19:05:43,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 19:05:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 19:05:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:05:44,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:44,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:44,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:44,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:05:44,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:44,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:44,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:44,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 19:05:44,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 19:05:44,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 19:05:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:05:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 19:05:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:44,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:44,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 19:05:44,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:44,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-27 19:05:44,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:05:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 19:05:44,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:05:44,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934670401] [2020-10-27 19:05:44,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:44,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:05:44,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314505303] [2020-10-27 19:05:44,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:05:44,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:44,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:05:44,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:05:44,806 INFO L87 Difference]: Start difference. First operand 10478 states and 15653 transitions. Second operand 7 states. [2020-10-27 19:06:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:00,864 INFO L93 Difference]: Finished difference Result 27809 states and 44254 transitions. [2020-10-27 19:06:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:06:00,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-27 19:06:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:00,955 INFO L225 Difference]: With dead ends: 27809 [2020-10-27 19:06:00,955 INFO L226 Difference]: Without dead ends: 17337 [2020-10-27 19:06:00,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:06:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17337 states. [2020-10-27 19:06:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17337 to 17231. [2020-10-27 19:06:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17231 states. [2020-10-27 19:06:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17231 states to 17231 states and 24573 transitions. [2020-10-27 19:06:01,627 INFO L78 Accepts]: Start accepts. Automaton has 17231 states and 24573 transitions. Word has length 218 [2020-10-27 19:06:01,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:01,627 INFO L481 AbstractCegarLoop]: Abstraction has 17231 states and 24573 transitions. [2020-10-27 19:06:01,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:06:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 17231 states and 24573 transitions. [2020-10-27 19:06:01,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 19:06:01,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:01,637 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:06:01,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:06:01,637 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:01,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:01,638 INFO L82 PathProgramCache]: Analyzing trace with hash -409746685, now seen corresponding path program 1 times [2020-10-27 19:06:01,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:01,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028602022] [2020-10-27 19:06:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:02,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:03,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:05,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:05,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-27 19:06:05,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:06:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4235 [2020-10-27 19:06:05,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:06:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 19:06:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 19:06:05,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:06,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:06,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:06,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:06,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:06,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:06,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:06:06,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:06,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:06,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:06,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:06,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:06:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:06,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:06,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 19:06:06,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:06,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 19:06:06,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 19:06:06,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 19:06:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 19:06:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:06:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 19:06:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:06:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:06:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 19:06:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 118 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:06:07,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028602022] [2020-10-27 19:06:07,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:07,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:06:07,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248518016] [2020-10-27 19:06:07,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:06:07,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:07,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:06:07,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:06:07,038 INFO L87 Difference]: Start difference. First operand 17231 states and 24573 transitions. Second operand 8 states. [2020-10-27 19:06:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:28,840 INFO L93 Difference]: Finished difference Result 35773 states and 51300 transitions. [2020-10-27 19:06:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:06:28,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2020-10-27 19:06:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:28,918 INFO L225 Difference]: With dead ends: 35773 [2020-10-27 19:06:28,918 INFO L226 Difference]: Without dead ends: 18548 [2020-10-27 19:06:28,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:06:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18548 states. [2020-10-27 19:06:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18548 to 18535. [2020-10-27 19:06:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18535 states. [2020-10-27 19:06:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18535 states to 18535 states and 25964 transitions. [2020-10-27 19:06:29,558 INFO L78 Accepts]: Start accepts. Automaton has 18535 states and 25964 transitions. Word has length 221 [2020-10-27 19:06:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:29,559 INFO L481 AbstractCegarLoop]: Abstraction has 18535 states and 25964 transitions. [2020-10-27 19:06:29,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:06:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 18535 states and 25964 transitions. [2020-10-27 19:06:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-27 19:06:29,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:29,595 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:06:29,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:06:29,595 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:29,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:29,597 INFO L82 PathProgramCache]: Analyzing trace with hash 699477677, now seen corresponding path program 1 times [2020-10-27 19:06:29,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:29,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266268630] [2020-10-27 19:06:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:29,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:31,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:33,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:33,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-27 19:06:33,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:06:33,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3296 [2020-10-27 19:06:33,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:33,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 19:06:33,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:06:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 388 [2020-10-27 19:06:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:33,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:33,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:33,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:33,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:33,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:06:33,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:33,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:33,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:33,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:06:33,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:34,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:34,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-27 19:06:34,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:34,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-10-27 19:06:34,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:34,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:06:34,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:06:34,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-27 19:06:34,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:06:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:34,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:35,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:35,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 19:06:35,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-27 19:06:35,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:06:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:06:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 19:06:35,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:35,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266268630] [2020-10-27 19:06:35,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:35,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:06:35,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647340742] [2020-10-27 19:06:35,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:06:35,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:35,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:06:35,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:06:35,897 INFO L87 Difference]: Start difference. First operand 18535 states and 25964 transitions. Second operand 8 states. [2020-10-27 19:06:36,052 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 19:06:49,770 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-27 19:07:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:01,739 INFO L93 Difference]: Finished difference Result 45049 states and 63152 transitions. [2020-10-27 19:07:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:07:01,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 386 [2020-10-27 19:07:01,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:01,864 INFO L225 Difference]: With dead ends: 45049 [2020-10-27 19:07:01,864 INFO L226 Difference]: Without dead ends: 26482 [2020-10-27 19:07:01,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:07:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26482 states. [2020-10-27 19:07:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26482 to 26460. [2020-10-27 19:07:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26460 states. [2020-10-27 19:07:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26460 states to 26460 states and 36191 transitions. [2020-10-27 19:07:02,578 INFO L78 Accepts]: Start accepts. Automaton has 26460 states and 36191 transitions. Word has length 386 [2020-10-27 19:07:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:02,579 INFO L481 AbstractCegarLoop]: Abstraction has 26460 states and 36191 transitions. [2020-10-27 19:07:02,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:07:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 26460 states and 36191 transitions. [2020-10-27 19:07:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-27 19:07:02,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:02,634 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:07:02,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:07:02,635 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:02,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1753168191, now seen corresponding path program 1 times [2020-10-27 19:07:02,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:02,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005067547] [2020-10-27 19:07:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:07,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-27 19:07:07,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:07,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4716 [2020-10-27 19:07:07,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 419 [2020-10-27 19:07:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 19:07:07,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:07,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:07:07,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:07,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:07,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:08,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:08,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:08,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-27 19:07:08,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 19:07:08,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 404 [2020-10-27 19:07:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:07:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:08,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:08,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 19:07:08,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 19:07:08,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 19:07:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:07:08,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005067547] [2020-10-27 19:07:08,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:08,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:07:08,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202163173] [2020-10-27 19:07:08,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:07:08,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:08,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:07:08,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:07:08,808 INFO L87 Difference]: Start difference. First operand 26460 states and 36191 transitions. Second operand 5 states. [2020-10-27 19:07:09,645 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68