/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/Problem18_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:05:00,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:05:00,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:05:00,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:05:00,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:05:00,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:05:00,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:05:00,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:05:00,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:05:00,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:05:00,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:05:00,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:05:00,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:05:00,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:05:00,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:05:00,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:05:00,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:05:00,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:05:00,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:05:00,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:05:00,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:05:00,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:05:00,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:05:00,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:05:00,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:05:00,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:05:00,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:05:00,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:05:00,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:05:00,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:05:00,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:05:00,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:05:00,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:05:00,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:05:00,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:05:00,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:05:00,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:05:00,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:05:00,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:05:00,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:05:00,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:05:00,778 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 19:05:00,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:05:00,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:05:00,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:05:00,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:05:00,837 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:05:00,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:05:00,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:05:00,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:05:00,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:05:00,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:05:00,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:05:00,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:05:00,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:05:00,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:05:00,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:05:00,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:05:00,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:05:00,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:05:00,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:05:00,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:05:00,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:05:00,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:05:00,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:05:00,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:05:00,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:05:00,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:05:00,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:05:00,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:05:00,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:05:00,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:05:01,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:05:01,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:05:01,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:05:01,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:05:01,331 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:05:01,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label06.c [2020-10-27 19:05:01,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3576bbc72/381cba85ef4a4989abce531d3cf6c94f/FLAG9d1a9c813 [2020-10-27 19:05:02,373 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:05:02,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label06.c [2020-10-27 19:05:02,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3576bbc72/381cba85ef4a4989abce531d3cf6c94f/FLAG9d1a9c813 [2020-10-27 19:05:02,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3576bbc72/381cba85ef4a4989abce531d3cf6c94f [2020-10-27 19:05:02,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:05:02,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:05:02,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:05:02,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:05:02,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:05:02,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:05:02" (1/1) ... [2020-10-27 19:05:02,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35bb5c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:02, skipping insertion in model container [2020-10-27 19:05:02,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:05:02" (1/1) ... [2020-10-27 19:05:02,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:05:03,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:05:04,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:05:04,283 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:05:04,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:05:04,867 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:05:04,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04 WrapperNode [2020-10-27 19:05:04,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:05:04,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:05:04,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:05:04,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:05:04,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04" (1/1) ... [2020-10-27 19:05:04,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04" (1/1) ... [2020-10-27 19:05:04,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04" (1/1) ... [2020-10-27 19:05:04,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04" (1/1) ... [2020-10-27 19:05:05,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04" (1/1) ... [2020-10-27 19:05:05,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04" (1/1) ... [2020-10-27 19:05:05,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04" (1/1) ... [2020-10-27 19:05:05,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:05:05,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:05:05,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:05:05,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:05:05,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04" (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 19:05:05,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:05:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:05:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:05:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:05:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:05:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:05:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:05:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:05:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:05:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:05:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:05:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:05:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:05:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:05:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:05:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:05:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:05:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:05:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:05:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:05:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:05:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:05:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:05:09,494 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:05:09,495 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:05:09,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:05:09 BoogieIcfgContainer [2020-10-27 19:05:09,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:05:09,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:05:09,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:05:09,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:05:09,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:05:02" (1/3) ... [2020-10-27 19:05:09,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218cb926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:05:09, skipping insertion in model container [2020-10-27 19:05:09,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:04" (2/3) ... [2020-10-27 19:05:09,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218cb926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:05:09, skipping insertion in model container [2020-10-27 19:05:09,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:05:09" (3/3) ... [2020-10-27 19:05:09,514 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label06.c [2020-10-27 19:05:09,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:05:09,534 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:05:09,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:05:09,600 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:05:09,600 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:05:09,601 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:05:09,601 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:05:09,601 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:05:09,601 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:05:09,601 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:05:09,601 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:05:09,693 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:05:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 19:05:09,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:09,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:05:09,705 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:09,716 INFO L82 PathProgramCache]: Analyzing trace with hash -2144460280, now seen corresponding path program 1 times [2020-10-27 19:05:09,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:09,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938931567] [2020-10-27 19:05:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:10,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:10,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 19:05:10,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-27 19:05:10,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:05:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:05:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 19:05:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:05:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:10,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:10,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:10,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:10,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:10,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 19:05:10,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:05:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:05:10,734 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 19:05:10,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938931567] [2020-10-27 19:05:10,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:05:10,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:05:10,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38249545] [2020-10-27 19:05:10,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:05:10,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:10,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:05:10,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:05:10,774 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 19:05:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:21,074 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 19:05:21,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:21,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-27 19:05:21,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:21,118 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 19:05:21,119 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 19:05:21,136 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 19:05:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 19:05:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 19:05:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 19:05:21,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-27 19:05:21,328 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 32 [2020-10-27 19:05:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:21,328 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-27 19:05:21,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:05:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-27 19:05:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 19:05:21,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:21,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:21,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:05:21,335 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:21,336 INFO L82 PathProgramCache]: Analyzing trace with hash -554824976, now seen corresponding path program 1 times [2020-10-27 19:05:21,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:21,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085527842] [2020-10-27 19:05:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:22,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 19:05:22,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:05:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-27 19:05:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:05:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:05:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:05:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:22,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:22,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:22,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:05:22,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:22,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:05:22,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:22,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:22,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:22,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:05:22,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 19:05:22,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:05:22,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:05:22,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085527842] [2020-10-27 19:05:22,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:22,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:22,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954292146] [2020-10-27 19:05:22,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:22,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:22,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:22,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:22,808 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 5 states. [2020-10-27 19:05:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:33,939 INFO L93 Difference]: Finished difference Result 4278 states and 6736 transitions. [2020-10-27 19:05:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:33,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-27 19:05:33,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:33,958 INFO L225 Difference]: With dead ends: 4278 [2020-10-27 19:05:33,959 INFO L226 Difference]: Without dead ends: 2858 [2020-10-27 19:05:33,964 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 19:05:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2020-10-27 19:05:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2854. [2020-10-27 19:05:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2854 states. [2020-10-27 19:05:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 4027 transitions. [2020-10-27 19:05:34,056 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 4027 transitions. Word has length 102 [2020-10-27 19:05:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:34,057 INFO L481 AbstractCegarLoop]: Abstraction has 2854 states and 4027 transitions. [2020-10-27 19:05:34,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 4027 transitions. [2020-10-27 19:05:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 19:05:34,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:34,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:34,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:05:34,062 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:34,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1020552296, now seen corresponding path program 1 times [2020-10-27 19:05:34,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:34,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485689722] [2020-10-27 19:05:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:35,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:35,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 19:05:35,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:05:35,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-27 19:05:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:05:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:05:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:35,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:35,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:35,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:05:35,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:35,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:35,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:35,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:05:35,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 19:05:35,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:05:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:05:35,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485689722] [2020-10-27 19:05:35,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:35,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:35,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626100235] [2020-10-27 19:05:35,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:35,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:35,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:35,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:35,274 INFO L87 Difference]: Start difference. First operand 2854 states and 4027 transitions. Second operand 5 states. [2020-10-27 19:05:46,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:46,753 INFO L93 Difference]: Finished difference Result 8549 states and 12185 transitions. [2020-10-27 19:05:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:46,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-27 19:05:46,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:46,787 INFO L225 Difference]: With dead ends: 8549 [2020-10-27 19:05:46,787 INFO L226 Difference]: Without dead ends: 5701 [2020-10-27 19:05:46,796 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 19:05:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2020-10-27 19:05:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 5697. [2020-10-27 19:05:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5697 states. [2020-10-27 19:05:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5697 states to 5697 states and 7349 transitions. [2020-10-27 19:05:46,991 INFO L78 Accepts]: Start accepts. Automaton has 5697 states and 7349 transitions. Word has length 106 [2020-10-27 19:05:46,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:46,992 INFO L481 AbstractCegarLoop]: Abstraction has 5697 states and 7349 transitions. [2020-10-27 19:05:46,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:46,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5697 states and 7349 transitions. [2020-10-27 19:05:46,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 19:05:46,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:46,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:46,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:05:46,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:46,997 INFO L82 PathProgramCache]: Analyzing trace with hash -777589364, now seen corresponding path program 1 times [2020-10-27 19:05:46,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:46,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212389653] [2020-10-27 19:05:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:47,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:48,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:48,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 19:05:48,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:05:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-27 19:05:48,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 19:05:48,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:05:48,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:48,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:48,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:48,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:48,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:05:48,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:48,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:48,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:48,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:05:48,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:48,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 19:05:48,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 19:05:48,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:05:48,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212389653] [2020-10-27 19:05:48,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:48,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:48,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684577943] [2020-10-27 19:05:48,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:48,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:48,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:48,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:48,912 INFO L87 Difference]: Start difference. First operand 5697 states and 7349 transitions. Second operand 5 states. [2020-10-27 19:05:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:59,633 INFO L93 Difference]: Finished difference Result 14229 states and 18992 transitions. [2020-10-27 19:05:59,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:59,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 19:05:59,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:59,703 INFO L225 Difference]: With dead ends: 14229 [2020-10-27 19:05:59,704 INFO L226 Difference]: Without dead ends: 8538 [2020-10-27 19:05:59,720 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 19:05:59,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2020-10-27 19:06:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 8534. [2020-10-27 19:06:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8534 states. [2020-10-27 19:06:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8534 states to 8534 states and 11084 transitions. [2020-10-27 19:06:00,067 INFO L78 Accepts]: Start accepts. Automaton has 8534 states and 11084 transitions. Word has length 120 [2020-10-27 19:06:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:00,069 INFO L481 AbstractCegarLoop]: Abstraction has 8534 states and 11084 transitions. [2020-10-27 19:06:00,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8534 states and 11084 transitions. [2020-10-27 19:06:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 19:06:00,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:00,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:00,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:06:00,078 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:00,078 INFO L82 PathProgramCache]: Analyzing trace with hash 111930930, now seen corresponding path program 1 times [2020-10-27 19:06:00,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:00,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36324658] [2020-10-27 19:06:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:00,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:01,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:01,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 19:06:01,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:06:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1172 [2020-10-27 19:06:01,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 19:06:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:06:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:01,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:01,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:01,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:01,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:01,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:06:01,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:01,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:01,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:01,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:01,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:01,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:01,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 19:06:01,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 19:06:01,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 19:06:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:01,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36324658] [2020-10-27 19:06:01,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:01,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:01,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081781106] [2020-10-27 19:06:01,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:01,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:01,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:01,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:01,688 INFO L87 Difference]: Start difference. First operand 8534 states and 11084 transitions. Second operand 5 states. [2020-10-27 19:06:02,445 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 19:06:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:09,865 INFO L93 Difference]: Finished difference Result 17085 states and 22225 transitions. [2020-10-27 19:06:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:09,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 19:06:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:09,923 INFO L225 Difference]: With dead ends: 17085 [2020-10-27 19:06:09,923 INFO L226 Difference]: Without dead ends: 8538 [2020-10-27 19:06:09,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 19:06:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2020-10-27 19:06:10,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 8534. [2020-10-27 19:06:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8534 states. [2020-10-27 19:06:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8534 states to 8534 states and 11072 transitions. [2020-10-27 19:06:10,201 INFO L78 Accepts]: Start accepts. Automaton has 8534 states and 11072 transitions. Word has length 127 [2020-10-27 19:06:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:10,203 INFO L481 AbstractCegarLoop]: Abstraction has 8534 states and 11072 transitions. [2020-10-27 19:06:10,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:10,203 INFO L276 IsEmpty]: Start isEmpty. Operand 8534 states and 11072 transitions. [2020-10-27 19:06:10,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 19:06:10,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:10,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:10,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:06:10,210 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:10,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:10,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1528665608, now seen corresponding path program 1 times [2020-10-27 19:06:10,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:10,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729292763] [2020-10-27 19:06:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:11,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:11,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 19:06:11,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:06:11,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1435 [2020-10-27 19:06:11,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 19:06:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:06:11,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:06:11,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:11,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:11,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:06:11,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:11,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:12,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:12,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:06:12,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:12,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 19:06:12,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:12,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:12,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 19:06:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:12,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729292763] [2020-10-27 19:06:12,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:12,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:12,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803267352] [2020-10-27 19:06:12,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:12,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:12,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:12,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:12,197 INFO L87 Difference]: Start difference. First operand 8534 states and 11072 transitions. Second operand 5 states. [2020-10-27 19:06:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:24,202 INFO L93 Difference]: Finished difference Result 21324 states and 28524 transitions. [2020-10-27 19:06:24,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:24,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 19:06:24,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:24,252 INFO L225 Difference]: With dead ends: 21324 [2020-10-27 19:06:24,252 INFO L226 Difference]: Without dead ends: 12796 [2020-10-27 19:06:24,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 19:06:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12796 states. [2020-10-27 19:06:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12796 to 12788. [2020-10-27 19:06:24,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12788 states. [2020-10-27 19:06:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12788 states to 12788 states and 16964 transitions. [2020-10-27 19:06:24,600 INFO L78 Accepts]: Start accepts. Automaton has 12788 states and 16964 transitions. Word has length 154 [2020-10-27 19:06:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:24,600 INFO L481 AbstractCegarLoop]: Abstraction has 12788 states and 16964 transitions. [2020-10-27 19:06:24,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 12788 states and 16964 transitions. [2020-10-27 19:06:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 19:06:24,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:24,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:24,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:06:24,607 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:24,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:24,608 INFO L82 PathProgramCache]: Analyzing trace with hash -145822828, now seen corresponding path program 1 times [2020-10-27 19:06:24,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:24,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158948126] [2020-10-27 19:06:24,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:24,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:26,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:26,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 19:06:26,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:06:26,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1611 [2020-10-27 19:06:26,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 19:06:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:06:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:26,479 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 19:06:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:26,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:06:26,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:26,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:26,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:26,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 19:06:26,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 19:06:26,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 19:06:26,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:26,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158948126] [2020-10-27 19:06:26,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:26,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:26,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902949945] [2020-10-27 19:06:26,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:26,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:26,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:26,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:26,878 INFO L87 Difference]: Start difference. First operand 12788 states and 16964 transitions. Second operand 5 states. [2020-10-27 19:06:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:49,515 INFO L93 Difference]: Finished difference Result 34769 states and 47332 transitions. [2020-10-27 19:06:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:49,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-27 19:06:49,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:49,600 INFO L225 Difference]: With dead ends: 34769 [2020-10-27 19:06:49,600 INFO L226 Difference]: Without dead ends: 21987 [2020-10-27 19:06:49,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 19:06:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21987 states. [2020-10-27 19:06:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21987 to 21979. [2020-10-27 19:06:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21979 states. [2020-10-27 19:06:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21979 states to 21979 states and 27737 transitions. [2020-10-27 19:06:50,224 INFO L78 Accepts]: Start accepts. Automaton has 21979 states and 27737 transitions. Word has length 180 [2020-10-27 19:06:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:50,225 INFO L481 AbstractCegarLoop]: Abstraction has 21979 states and 27737 transitions. [2020-10-27 19:06:50,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 21979 states and 27737 transitions. [2020-10-27 19:06:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 19:06:50,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:50,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:50,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:06:50,231 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:50,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1691486288, now seen corresponding path program 1 times [2020-10-27 19:06:50,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:50,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538626710] [2020-10-27 19:06:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:50,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:51,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-27 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-27 19:06:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:06:51,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:51,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:51,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:51,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:51,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:06:51,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:51,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:51,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:51,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:51,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 19:06:51,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 19:06:51,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 19:06:51,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:51,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538626710] [2020-10-27 19:06:51,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:51,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:51,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771138024] [2020-10-27 19:06:51,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:51,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:51,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:51,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:51,567 INFO L87 Difference]: Start difference. First operand 21979 states and 27737 transitions. Second operand 5 states. [2020-10-27 19:07:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:06,078 INFO L93 Difference]: Finished difference Result 53882 states and 70019 transitions. [2020-10-27 19:07:06,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:06,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-27 19:07:06,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:06,201 INFO L225 Difference]: With dead ends: 53882 [2020-10-27 19:07:06,201 INFO L226 Difference]: Without dead ends: 31909 [2020-10-27 19:07:06,251 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 19:07:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31909 states. [2020-10-27 19:07:07,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31909 to 31901. [2020-10-27 19:07:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31901 states. [2020-10-27 19:07:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31901 states to 31901 states and 39930 transitions. [2020-10-27 19:07:07,077 INFO L78 Accepts]: Start accepts. Automaton has 31901 states and 39930 transitions. Word has length 182 [2020-10-27 19:07:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:07,078 INFO L481 AbstractCegarLoop]: Abstraction has 31901 states and 39930 transitions. [2020-10-27 19:07:07,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:07:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 31901 states and 39930 transitions. [2020-10-27 19:07:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 19:07:07,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:07,087 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:07:07,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:07:07,087 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:07,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:07,088 INFO L82 PathProgramCache]: Analyzing trace with hash -97300412, now seen corresponding path program 1 times [2020-10-27 19:07:07,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:07,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414269833] [2020-10-27 19:07:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:08,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:10,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:10,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-27 19:07:10,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:07:10,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3484 [2020-10-27 19:07:10,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-27 19:07:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:07:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:10,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:10,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:10,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:10,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:07:10,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:10,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:10,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:10,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:10,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:07:10,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:10,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 19:07:10,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:10,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:10,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:10,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:10,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:07:10,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 19:07:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:11,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:11,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 19:07:11,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 19:07:11,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 19:07:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:07:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-27 19:07:11,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414269833] [2020-10-27 19:07:11,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:11,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:07:11,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195430714] [2020-10-27 19:07:11,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:07:11,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:11,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:07:11,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:07:11,130 INFO L87 Difference]: Start difference. First operand 31901 states and 39930 transitions. Second operand 5 states. [2020-10-27 19:07:25,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:25,313 INFO L93 Difference]: Finished difference Result 71590 states and 91862 transitions. [2020-10-27 19:07:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:25,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 19:07:25,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:25,470 INFO L225 Difference]: With dead ends: 71590 [2020-10-27 19:07:25,470 INFO L226 Difference]: Without dead ends: 39695 [2020-10-27 19:07:25,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 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 19:07:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39695 states. [2020-10-27 19:07:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39695 to 39687. [2020-10-27 19:07:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39687 states. [2020-10-27 19:07:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39687 states to 39687 states and 50365 transitions. [2020-10-27 19:07:26,534 INFO L78 Accepts]: Start accepts. Automaton has 39687 states and 50365 transitions. Word has length 214 [2020-10-27 19:07:26,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:26,535 INFO L481 AbstractCegarLoop]: Abstraction has 39687 states and 50365 transitions. [2020-10-27 19:07:26,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:07:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 39687 states and 50365 transitions. [2020-10-27 19:07:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-27 19:07:26,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:26,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:26,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:07:26,574 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:26,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:26,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1090641504, now seen corresponding path program 1 times [2020-10-27 19:07:26,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:26,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026301727] [2020-10-27 19:07:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:29,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:29,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-27 19:07:29,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3212 [2020-10-27 19:07:29,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-27 19:07:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 19:07:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:30,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:30,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:30,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:30,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:07:30,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:30,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:30,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:30,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-27 19:07:30,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-27 19:07:30,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-27 19:07:30,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:30,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:07:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:30,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:30,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 19:07:30,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:30,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 19:07:30,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 19:07:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:07:31,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026301727] [2020-10-27 19:07:31,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:31,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:07:31,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592403820] [2020-10-27 19:07:31,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:07:31,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:31,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:07:31,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:07:31,224 INFO L87 Difference]: Start difference. First operand 39687 states and 50365 transitions. Second operand 5 states. [2020-10-27 19:07:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:44,345 INFO L93 Difference]: Finished difference Result 88573 states and 115226 transitions. [2020-10-27 19:07:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:44,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-10-27 19:07:44,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:44,537 INFO L225 Difference]: With dead ends: 88573 [2020-10-27 19:07:44,537 INFO L226 Difference]: Without dead ends: 48892 [2020-10-27 19:07:44,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 19:07:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48892 states. [2020-10-27 19:07:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48892 to 45374. [2020-10-27 19:07:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45374 states. [2020-10-27 19:07:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45374 states to 45374 states and 56500 transitions. [2020-10-27 19:07:45,702 INFO L78 Accepts]: Start accepts. Automaton has 45374 states and 56500 transitions. Word has length 423 [2020-10-27 19:07:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:45,703 INFO L481 AbstractCegarLoop]: Abstraction has 45374 states and 56500 transitions. [2020-10-27 19:07:45,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:07:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 45374 states and 56500 transitions. [2020-10-27 19:07:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-10-27 19:07:45,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:45,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:45,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:07:45,771 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:45,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:45,772 INFO L82 PathProgramCache]: Analyzing trace with hash -602083283, now seen corresponding path program 1 times [2020-10-27 19:07:45,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:45,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57547178] [2020-10-27 19:07:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:47,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:48,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-27 19:07:48,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2012 [2020-10-27 19:07:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:07:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:07:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 537 [2020-10-27 19:07:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:48,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:48,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:48,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:48,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:48,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 19:07:48,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:07:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:48,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:49,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:49,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-27 19:07:49,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:49,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1291 [2020-10-27 19:07:49,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:07:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 503 [2020-10-27 19:07:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:07:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:50,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:50,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-27 19:07:50,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 19:07:50,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-27 19:07:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:07:51,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57547178] [2020-10-27 19:07:51,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:51,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:07:51,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331749729] [2020-10-27 19:07:51,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:07:51,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:51,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:07:51,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:07:51,208 INFO L87 Difference]: Start difference. First operand 45374 states and 56500 transitions. Second operand 6 states. [2020-10-27 19:08:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:08:05,914 INFO L93 Difference]: Finished difference Result 108623 states and 137739 transitions. [2020-10-27 19:08:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:08:05,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 532 [2020-10-27 19:08:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:08:06,158 INFO L225 Difference]: With dead ends: 108623 [2020-10-27 19:08:06,158 INFO L226 Difference]: Without dead ends: 63255 [2020-10-27 19:08:06,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:08:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63255 states. [2020-10-27 19:08:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63255 to 59721. [2020-10-27 19:08:07,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59721 states. [2020-10-27 19:08:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59721 states to 59721 states and 73738 transitions. [2020-10-27 19:08:07,955 INFO L78 Accepts]: Start accepts. Automaton has 59721 states and 73738 transitions. Word has length 532 [2020-10-27 19:08:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:08:07,957 INFO L481 AbstractCegarLoop]: Abstraction has 59721 states and 73738 transitions. [2020-10-27 19:08:07,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:08:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 59721 states and 73738 transitions. [2020-10-27 19:08:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-10-27 19:08:08,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:08,029 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:08,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:08:08,029 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:08,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:08,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1266386123, now seen corresponding path program 1 times [2020-10-27 19:08:08,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:08,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894885387] [2020-10-27 19:08:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:13,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:13,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 617 [2020-10-27 19:08:13,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:08:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 19:08:13,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:08:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 19:08:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 502 [2020-10-27 19:08:13,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:08:13,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:08:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:13,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:13,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:08:13,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:13,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:08:13,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:13,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:13,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:08:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:13,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:13,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:13,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:08:13,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 19:08:13,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:08:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 19:08:13,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:13,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 19:08:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:13,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:14,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:14,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-27 19:08:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-27 19:08:14,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:08:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:08:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 503 [2020-10-27 19:08:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:14,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:08:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:14,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:14,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-27 19:08:14,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:14,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 19:08:14,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:08:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:08:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-27 19:08:14,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:08:15,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894885387] [2020-10-27 19:08:15,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:08:15,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:08:15,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432966794] [2020-10-27 19:08:15,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:08:15,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:08:15,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:08:15,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:08:15,613 INFO L87 Difference]: Start difference. First operand 59721 states and 73738 transitions. Second operand 8 states. [2020-10-27 19:08:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:08:31,461 INFO L93 Difference]: Finished difference Result 118375 states and 147762 transitions. [2020-10-27 19:08:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 19:08:31,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 601 [2020-10-27 19:08:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:08:31,661 INFO L225 Difference]: With dead ends: 118375 [2020-10-27 19:08:31,661 INFO L226 Difference]: Without dead ends: 55812 [2020-10-27 19:08:31,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-27 19:08:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55812 states. [2020-10-27 19:08:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55812 to 48718. [2020-10-27 19:08:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48718 states. [2020-10-27 19:08:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48718 states to 48718 states and 57485 transitions. [2020-10-27 19:08:32,708 INFO L78 Accepts]: Start accepts. Automaton has 48718 states and 57485 transitions. Word has length 601 [2020-10-27 19:08:32,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:08:32,709 INFO L481 AbstractCegarLoop]: Abstraction has 48718 states and 57485 transitions. [2020-10-27 19:08:32,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:08:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 48718 states and 57485 transitions. [2020-10-27 19:08:32,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2020-10-27 19:08:32,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:32,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:32,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:08:32,769 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:32,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:32,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1033000003, now seen corresponding path program 1 times [2020-10-27 19:08:32,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:32,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501471224] [2020-10-27 19:08:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking...