/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:09:34,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:09:34,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:09:34,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:09:34,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:09:34,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:09:34,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:09:34,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:09:34,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:09:34,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:09:34,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:09:34,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:09:34,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:09:34,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:09:34,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:09:34,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:09:34,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:09:34,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:09:34,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:09:34,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:09:34,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:09:34,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:09:34,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:09:34,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:09:34,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:09:34,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:09:34,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:09:34,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:09:34,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:09:34,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:09:34,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:09:34,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:09:34,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:09:34,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:09:34,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:09:34,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:09:34,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:09:34,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:09:34,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:09:34,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:09:34,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:09:34,769 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 [2020-10-28 18:09:34,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:09:34,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:09:34,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:09:34,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:09:34,800 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:09:34,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:09:34,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:09:34,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:09:34,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:09:34,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:09:34,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:09:34,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:09:34,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:09:34,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:09:34,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:09:34,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:09:34,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:09:34,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:09:34,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:09:34,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:09:34,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:09:34,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:09:34,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:09:34,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:09:34,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:09:34,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:09:34,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:09:34,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:09:34,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:09:34,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:09:35,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:09:35,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:09:35,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:09:35,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:09:35,329 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:09:35,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 18:09:35,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b92eb5182/1c08336c983d4b8ea74bdee96ca0500f/FLAGc542a5d31 [2020-10-28 18:09:36,154 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:09:36,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 18:09:36,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b92eb5182/1c08336c983d4b8ea74bdee96ca0500f/FLAGc542a5d31 [2020-10-28 18:09:36,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b92eb5182/1c08336c983d4b8ea74bdee96ca0500f [2020-10-28 18:09:36,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:09:36,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:09:36,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:09:36,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:09:36,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:09:36,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:09:36" (1/1) ... [2020-10-28 18:09:36,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5077ccc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:36, skipping insertion in model container [2020-10-28 18:09:36,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:09:36" (1/1) ... [2020-10-28 18:09:36,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:09:36,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:09:36,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:09:36,927 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:09:37,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:09:37,113 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:09:37,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37 WrapperNode [2020-10-28 18:09:37,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:09:37,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:09:37,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:09:37,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:09:37,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37" (1/1) ... [2020-10-28 18:09:37,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37" (1/1) ... [2020-10-28 18:09:37,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37" (1/1) ... [2020-10-28 18:09:37,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37" (1/1) ... [2020-10-28 18:09:37,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37" (1/1) ... [2020-10-28 18:09:37,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37" (1/1) ... [2020-10-28 18:09:37,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37" (1/1) ... [2020-10-28 18:09:37,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:09:37,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:09:37,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:09:37,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:09:37,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37" (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 [2020-10-28 18:09:37,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:09:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:09:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:09:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:09:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:09:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:09:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:09:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:09:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:09:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:09:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:09:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:09:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:09:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:09:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:09:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:09:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:09:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:09:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:09:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:09:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:09:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:09:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:09:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:09:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:09:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:09:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:09:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:09:38,691 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:09:38,691 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:09:38,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:09:38 BoogieIcfgContainer [2020-10-28 18:09:38,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:09:38,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:09:38,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:09:38,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:09:38,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:09:36" (1/3) ... [2020-10-28 18:09:38,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da42f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:09:38, skipping insertion in model container [2020-10-28 18:09:38,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:09:37" (2/3) ... [2020-10-28 18:09:38,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da42f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:09:38, skipping insertion in model container [2020-10-28 18:09:38,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:09:38" (3/3) ... [2020-10-28 18:09:38,703 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 18:09:38,715 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:09:38,721 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:09:38,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:09:38,767 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:09:38,767 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:09:38,768 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:09:38,768 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:09:38,768 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:09:38,768 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:09:38,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:09:38,768 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:09:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-10-28 18:09:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 18:09:38,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:09:38,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:09:38,812 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:09:38,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:09:38,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1796081780, now seen corresponding path program 1 times [2020-10-28 18:09:38,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:09:38,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203969673] [2020-10-28 18:09:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:09:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:39,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:40,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:44,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:44,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 18:09:44,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:09:44,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 18:09:44,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:44,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:09:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:09:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 18:09:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:09:44,939 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:09:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:09:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:44,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:09:44,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:09:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:09:44,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:44,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:09:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:09:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:09:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:09:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:09:45,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203969673] [2020-10-28 18:09:45,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:09:45,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:09:45,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873789171] [2020-10-28 18:09:45,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:09:45,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:09:45,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:09:45,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:09:45,085 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2020-10-28 18:09:47,506 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:09:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:09:48,691 INFO L93 Difference]: Finished difference Result 704 states and 1250 transitions. [2020-10-28 18:09:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:09:48,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-28 18:09:48,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:09:48,714 INFO L225 Difference]: With dead ends: 704 [2020-10-28 18:09:48,715 INFO L226 Difference]: Without dead ends: 471 [2020-10-28 18:09:48,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:09:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-28 18:09:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 450. [2020-10-28 18:09:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-28 18:09:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 656 transitions. [2020-10-28 18:09:48,895 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 656 transitions. Word has length 97 [2020-10-28 18:09:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:09:48,896 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 656 transitions. [2020-10-28 18:09:48,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:09:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 656 transitions. [2020-10-28 18:09:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 18:09:48,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:09:48,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:09:48,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:09:48,902 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:09:48,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:09:48,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2011840673, now seen corresponding path program 1 times [2020-10-28 18:09:48,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:09:48,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518720731] [2020-10-28 18:09:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:09:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:48,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:49,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:49,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:53,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:53,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 18:09:53,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:09:53,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:09:53,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:53,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:09:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:09:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 18:09:53,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:09:54,366 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:09:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:09:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:54,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:54,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:09:54,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:09:54,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:09:54,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:54,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:09:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:09:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:09:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:09:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:09:54,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518720731] [2020-10-28 18:09:54,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:09:54,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:09:54,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487923670] [2020-10-28 18:09:54,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:09:54,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:09:54,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:09:54,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:09:54,442 INFO L87 Difference]: Start difference. First operand 450 states and 656 transitions. Second operand 5 states. [2020-10-28 18:09:55,949 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:09:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:09:56,843 INFO L93 Difference]: Finished difference Result 1264 states and 1829 transitions. [2020-10-28 18:09:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:09:56,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-28 18:09:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:09:56,849 INFO L225 Difference]: With dead ends: 1264 [2020-10-28 18:09:56,850 INFO L226 Difference]: Without dead ends: 850 [2020-10-28 18:09:56,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:09:56,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-28 18:09:56,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 822. [2020-10-28 18:09:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-10-28 18:09:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1184 transitions. [2020-10-28 18:09:56,922 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1184 transitions. Word has length 98 [2020-10-28 18:09:56,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:09:56,923 INFO L481 AbstractCegarLoop]: Abstraction has 822 states and 1184 transitions. [2020-10-28 18:09:56,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:09:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1184 transitions. [2020-10-28 18:09:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 18:09:56,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:09:56,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:09:56,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:09:56,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:09:56,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:09:56,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1848333872, now seen corresponding path program 1 times [2020-10-28 18:09:56,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:09:56,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937368823] [2020-10-28 18:09:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:09:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:57,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:59,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:02,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:02,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 18:10:02,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:10:02,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:10:02,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:02,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:10:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:10:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 18:10:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:10:02,403 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:10:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:02,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:02,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:02,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:02,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:10:02,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:02,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:02,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:02,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937368823] [2020-10-28 18:10:02,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:02,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:10:02,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363665156] [2020-10-28 18:10:02,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:10:02,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:02,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:10:02,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:02,492 INFO L87 Difference]: Start difference. First operand 822 states and 1184 transitions. Second operand 5 states. [2020-10-28 18:10:04,049 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:10:04,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:04,984 INFO L93 Difference]: Finished difference Result 2348 states and 3362 transitions. [2020-10-28 18:10:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:10:04,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-28 18:10:04,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:04,994 INFO L225 Difference]: With dead ends: 2348 [2020-10-28 18:10:04,994 INFO L226 Difference]: Without dead ends: 1570 [2020-10-28 18:10:04,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:10:05,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2020-10-28 18:10:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1542. [2020-10-28 18:10:05,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2020-10-28 18:10:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2193 transitions. [2020-10-28 18:10:05,145 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2193 transitions. Word has length 99 [2020-10-28 18:10:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:05,146 INFO L481 AbstractCegarLoop]: Abstraction has 1542 states and 2193 transitions. [2020-10-28 18:10:05,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:10:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2193 transitions. [2020-10-28 18:10:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 18:10:05,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:05,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:05,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:10:05,154 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:05,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1433081661, now seen corresponding path program 1 times [2020-10-28 18:10:05,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:05,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344116803] [2020-10-28 18:10:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:05,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:05,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:10,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:10,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 18:10:10,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:10:10,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:10:10,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:10,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:10:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:10:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 18:10:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:10,791 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:10:10,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:10,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:10,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:10,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:10:10,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:10,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:10,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 18:10:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:10,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344116803] [2020-10-28 18:10:10,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:10,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:10:10,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696403376] [2020-10-28 18:10:10,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:10:10,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:10,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:10:10,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:10,883 INFO L87 Difference]: Start difference. First operand 1542 states and 2193 transitions. Second operand 5 states. [2020-10-28 18:10:12,545 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:10:13,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:13,601 INFO L93 Difference]: Finished difference Result 4305 states and 6145 transitions. [2020-10-28 18:10:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:10:13,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-28 18:10:13,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:13,617 INFO L225 Difference]: With dead ends: 4305 [2020-10-28 18:10:13,617 INFO L226 Difference]: Without dead ends: 2991 [2020-10-28 18:10:13,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:10:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-10-28 18:10:13,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2977. [2020-10-28 18:10:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2977 states. [2020-10-28 18:10:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4187 transitions. [2020-10-28 18:10:13,839 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4187 transitions. Word has length 100 [2020-10-28 18:10:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:13,839 INFO L481 AbstractCegarLoop]: Abstraction has 2977 states and 4187 transitions. [2020-10-28 18:10:13,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:10:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4187 transitions. [2020-10-28 18:10:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 18:10:13,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:13,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:13,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:10:13,845 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:13,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:13,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1571028975, now seen corresponding path program 1 times [2020-10-28 18:10:13,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:13,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242528428] [2020-10-28 18:10:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:13,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:14,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:14,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:18,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 18:10:18,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:10:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:10:18,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:18,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:10:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:10:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 18:10:18,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:10:19,319 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:10:19,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:19,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:19,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:19,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:19,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:10:19,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:19,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:19,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242528428] [2020-10-28 18:10:19,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:19,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:10:19,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936276524] [2020-10-28 18:10:19,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:10:19,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:19,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:10:19,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:19,374 INFO L87 Difference]: Start difference. First operand 2977 states and 4187 transitions. Second operand 5 states. [2020-10-28 18:10:20,906 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:10:22,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:22,034 INFO L93 Difference]: Finished difference Result 8507 states and 11904 transitions. [2020-10-28 18:10:22,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:10:22,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-28 18:10:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:22,062 INFO L225 Difference]: With dead ends: 8507 [2020-10-28 18:10:22,062 INFO L226 Difference]: Without dead ends: 5686 [2020-10-28 18:10:22,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:10:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2020-10-28 18:10:22,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5663. [2020-10-28 18:10:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5663 states. [2020-10-28 18:10:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5663 states to 5663 states and 7844 transitions. [2020-10-28 18:10:22,507 INFO L78 Accepts]: Start accepts. Automaton has 5663 states and 7844 transitions. Word has length 101 [2020-10-28 18:10:22,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:22,508 INFO L481 AbstractCegarLoop]: Abstraction has 5663 states and 7844 transitions. [2020-10-28 18:10:22,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:10:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5663 states and 7844 transitions. [2020-10-28 18:10:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 18:10:22,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:22,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:22,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:10:22,518 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:22,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:22,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1665731139, now seen corresponding path program 1 times [2020-10-28 18:10:22,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:22,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061558134] [2020-10-28 18:10:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:22,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:22,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:27,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:27,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 18:10:27,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:10:27,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:10:27,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:27,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:27,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:10:27,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:10:27,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 18:10:27,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:27,987 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:10:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:28,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:28,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:28,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:28,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:10:28,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:28,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:28,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061558134] [2020-10-28 18:10:28,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:28,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:10:28,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992009316] [2020-10-28 18:10:28,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:10:28,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:28,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:10:28,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:28,057 INFO L87 Difference]: Start difference. First operand 5663 states and 7844 transitions. Second operand 5 states. [2020-10-28 18:10:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:29,623 INFO L93 Difference]: Finished difference Result 9248 states and 12783 transitions. [2020-10-28 18:10:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:10:29,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-28 18:10:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:29,646 INFO L225 Difference]: With dead ends: 9248 [2020-10-28 18:10:29,646 INFO L226 Difference]: Without dead ends: 3659 [2020-10-28 18:10:29,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:10:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2020-10-28 18:10:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3659. [2020-10-28 18:10:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3659 states. [2020-10-28 18:10:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5039 transitions. [2020-10-28 18:10:29,931 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5039 transitions. Word has length 102 [2020-10-28 18:10:29,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:29,932 INFO L481 AbstractCegarLoop]: Abstraction has 3659 states and 5039 transitions. [2020-10-28 18:10:29,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:10:29,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5039 transitions. [2020-10-28 18:10:29,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 18:10:29,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:29,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:29,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:10:29,939 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:29,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:29,940 INFO L82 PathProgramCache]: Analyzing trace with hash -795950458, now seen corresponding path program 1 times [2020-10-28 18:10:29,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:29,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979718666] [2020-10-28 18:10:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:30,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:30,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:30,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:31,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:33,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:33,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:34,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 18:10:34,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:10:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:10:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:34,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:10:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:10:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 18:10:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:35,374 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:10:35,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:35,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:35,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:35,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:10:35,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:35,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:35,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979718666] [2020-10-28 18:10:35,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:35,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:10:35,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647961709] [2020-10-28 18:10:35,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:10:35,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:35,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:10:35,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:35,454 INFO L87 Difference]: Start difference. First operand 3659 states and 5039 transitions. Second operand 5 states. [2020-10-28 18:10:37,036 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:10:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:38,193 INFO L93 Difference]: Finished difference Result 10630 states and 14584 transitions. [2020-10-28 18:10:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:10:38,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-28 18:10:38,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:38,225 INFO L225 Difference]: With dead ends: 10630 [2020-10-28 18:10:38,225 INFO L226 Difference]: Without dead ends: 7026 [2020-10-28 18:10:38,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:10:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7026 states. [2020-10-28 18:10:38,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7026 to 7014. [2020-10-28 18:10:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7014 states. [2020-10-28 18:10:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7014 states to 7014 states and 9525 transitions. [2020-10-28 18:10:38,757 INFO L78 Accepts]: Start accepts. Automaton has 7014 states and 9525 transitions. Word has length 105 [2020-10-28 18:10:38,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:38,758 INFO L481 AbstractCegarLoop]: Abstraction has 7014 states and 9525 transitions. [2020-10-28 18:10:38,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:10:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7014 states and 9525 transitions. [2020-10-28 18:10:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:10:38,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:38,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:38,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:10:38,769 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:38,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:38,770 INFO L82 PathProgramCache]: Analyzing trace with hash -234008976, now seen corresponding path program 1 times [2020-10-28 18:10:38,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:38,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183977047] [2020-10-28 18:10:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:43,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:43,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 18:10:43,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:10:43,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 18:10:43,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:43,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:10:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:10:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 18:10:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:44,180 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:10:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:44,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:44,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:44,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:10:44,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:44,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:44,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183977047] [2020-10-28 18:10:44,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:44,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:10:44,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052634437] [2020-10-28 18:10:44,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:10:44,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:44,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:10:44,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:44,230 INFO L87 Difference]: Start difference. First operand 7014 states and 9525 transitions. Second operand 5 states. [2020-10-28 18:10:44,610 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 18:10:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:47,059 INFO L93 Difference]: Finished difference Result 12400 states and 16881 transitions. [2020-10-28 18:10:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:10:47,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-28 18:10:47,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:47,088 INFO L225 Difference]: With dead ends: 12400 [2020-10-28 18:10:47,088 INFO L226 Difference]: Without dead ends: 7000 [2020-10-28 18:10:47,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:10:47,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7000 states. [2020-10-28 18:10:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7000 to 6971. [2020-10-28 18:10:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6971 states. [2020-10-28 18:10:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6971 states to 6971 states and 9434 transitions. [2020-10-28 18:10:47,530 INFO L78 Accepts]: Start accepts. Automaton has 6971 states and 9434 transitions. Word has length 106 [2020-10-28 18:10:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:47,530 INFO L481 AbstractCegarLoop]: Abstraction has 6971 states and 9434 transitions. [2020-10-28 18:10:47,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:10:47,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6971 states and 9434 transitions. [2020-10-28 18:10:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 18:10:47,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:47,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:47,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:10:47,542 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:47,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:47,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2032555192, now seen corresponding path program 1 times [2020-10-28 18:10:47,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:47,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181095454] [2020-10-28 18:10:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:52,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:52,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 18:10:52,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:10:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:10:52,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:52,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:10:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:10:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 18:10:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:53,065 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:10:53,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:53,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:53,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:53,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:10:53,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:53,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:53,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181095454] [2020-10-28 18:10:53,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:53,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:10:53,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138789380] [2020-10-28 18:10:53,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:10:53,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:53,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:10:53,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:53,127 INFO L87 Difference]: Start difference. First operand 6971 states and 9434 transitions. Second operand 5 states. [2020-10-28 18:10:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:54,727 INFO L93 Difference]: Finished difference Result 12114 states and 16502 transitions. [2020-10-28 18:10:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:10:54,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-28 18:10:54,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:54,738 INFO L225 Difference]: With dead ends: 12114 [2020-10-28 18:10:54,739 INFO L226 Difference]: Without dead ends: 5663 [2020-10-28 18:10:54,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:10:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2020-10-28 18:10:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 5663. [2020-10-28 18:10:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5663 states. [2020-10-28 18:10:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5663 states to 5663 states and 7638 transitions. [2020-10-28 18:10:55,112 INFO L78 Accepts]: Start accepts. Automaton has 5663 states and 7638 transitions. Word has length 107 [2020-10-28 18:10:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:55,112 INFO L481 AbstractCegarLoop]: Abstraction has 5663 states and 7638 transitions. [2020-10-28 18:10:55,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:10:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5663 states and 7638 transitions. [2020-10-28 18:10:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 18:10:55,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:55,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:55,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:10:55,122 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:55,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1942350171, now seen corresponding path program 1 times [2020-10-28 18:10:55,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:55,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055242400] [2020-10-28 18:10:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:55,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:55,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:57,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:00,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:00,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 18:11:00,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:11:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:11:00,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:00,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:11:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 18:11:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:11:00,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:00,560 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:11:00,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:00,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:00,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:00,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:11:00,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:00,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:00,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:00,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055242400] [2020-10-28 18:11:00,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:00,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:00,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116899152] [2020-10-28 18:11:00,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:11:00,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:11:00,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:11:00,609 INFO L87 Difference]: Start difference. First operand 5663 states and 7638 transitions. Second operand 5 states. [2020-10-28 18:11:02,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:02,105 INFO L93 Difference]: Finished difference Result 9123 states and 12368 transitions. [2020-10-28 18:11:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:11:02,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-28 18:11:02,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:02,113 INFO L225 Difference]: With dead ends: 9123 [2020-10-28 18:11:02,113 INFO L226 Difference]: Without dead ends: 3834 [2020-10-28 18:11:02,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:11:02,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2020-10-28 18:11:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3834. [2020-10-28 18:11:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3834 states. [2020-10-28 18:11:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 5145 transitions. [2020-10-28 18:11:02,401 INFO L78 Accepts]: Start accepts. Automaton has 3834 states and 5145 transitions. Word has length 109 [2020-10-28 18:11:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:02,401 INFO L481 AbstractCegarLoop]: Abstraction has 3834 states and 5145 transitions. [2020-10-28 18:11:02,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:11:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3834 states and 5145 transitions. [2020-10-28 18:11:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 18:11:02,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:02,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:02,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:11:02,408 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1331912680, now seen corresponding path program 1 times [2020-10-28 18:11:02,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:02,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504448085] [2020-10-28 18:11:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:02,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:05,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:05,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:06,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:07,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:07,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 18:11:07,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:11:07,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:11:07,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:07,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:11:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 18:11:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 18:11:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:07,799 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:11:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:07,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:07,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:07,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:11:07,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:07,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:07,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504448085] [2020-10-28 18:11:07,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:07,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:07,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131587060] [2020-10-28 18:11:07,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:11:07,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:11:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:11:07,852 INFO L87 Difference]: Start difference. First operand 3834 states and 5145 transitions. Second operand 5 states. [2020-10-28 18:11:08,218 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:11:09,466 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:11:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:10,069 INFO L93 Difference]: Finished difference Result 5502 states and 7783 transitions. [2020-10-28 18:11:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:11:10,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-28 18:11:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:10,078 INFO L225 Difference]: With dead ends: 5502 [2020-10-28 18:11:10,078 INFO L226 Difference]: Without dead ends: 3902 [2020-10-28 18:11:10,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:11:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2020-10-28 18:11:10,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3900. [2020-10-28 18:11:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3900 states. [2020-10-28 18:11:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 5206 transitions. [2020-10-28 18:11:10,394 INFO L78 Accepts]: Start accepts. Automaton has 3900 states and 5206 transitions. Word has length 113 [2020-10-28 18:11:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:10,395 INFO L481 AbstractCegarLoop]: Abstraction has 3900 states and 5206 transitions. [2020-10-28 18:11:10,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:11:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3900 states and 5206 transitions. [2020-10-28 18:11:10,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 18:11:10,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:10,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:10,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:11:10,402 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:10,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:10,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1585828007, now seen corresponding path program 1 times [2020-10-28 18:11:10,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:10,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492612040] [2020-10-28 18:11:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:10,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:11,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:11,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:11,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:12,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:15,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:15,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 18:11:15,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:11:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:11:15,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:15,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:11:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 18:11:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 18:11:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:15,808 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:11:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:15,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:15,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:15,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:15,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:11:15,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:15,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:15,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:15,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492612040] [2020-10-28 18:11:15,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:15,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:15,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506685061] [2020-10-28 18:11:15,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:11:15,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:15,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:11:15,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:11:15,841 INFO L87 Difference]: Start difference. First operand 3900 states and 5206 transitions. Second operand 5 states. [2020-10-28 18:11:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:17,088 INFO L93 Difference]: Finished difference Result 5440 states and 7301 transitions. [2020-10-28 18:11:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:11:17,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-28 18:11:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:17,096 INFO L225 Difference]: With dead ends: 5440 [2020-10-28 18:11:17,097 INFO L226 Difference]: Without dead ends: 3386 [2020-10-28 18:11:17,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:11:17,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2020-10-28 18:11:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3386. [2020-10-28 18:11:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2020-10-28 18:11:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4504 transitions. [2020-10-28 18:11:17,385 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4504 transitions. Word has length 113 [2020-10-28 18:11:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:17,385 INFO L481 AbstractCegarLoop]: Abstraction has 3386 states and 4504 transitions. [2020-10-28 18:11:17,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:11:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4504 transitions. [2020-10-28 18:11:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 18:11:17,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:17,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:17,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:11:17,390 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:17,391 INFO L82 PathProgramCache]: Analyzing trace with hash 254313649, now seen corresponding path program 1 times [2020-10-28 18:11:17,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:17,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243347238] [2020-10-28 18:11:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:17,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:17,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:17,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:18,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:19,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:19,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:22,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:22,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 18:11:22,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:11:22,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:11:22,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:22,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:11:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:11:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 18:11:22,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:22,888 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:11:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:22,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:22,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:22,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 18:11:22,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:22,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:11:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:22,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:11:22,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:11:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:22,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243347238] [2020-10-28 18:11:22,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:22,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:22,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912102180] [2020-10-28 18:11:22,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:11:23,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:23,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:11:23,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:11:23,001 INFO L87 Difference]: Start difference. First operand 3386 states and 4504 transitions. Second operand 6 states. [2020-10-28 18:11:23,383 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 18:11:24,857 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:11:25,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:25,973 INFO L93 Difference]: Finished difference Result 7840 states and 10869 transitions. [2020-10-28 18:11:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:11:25,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-28 18:11:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:25,989 INFO L225 Difference]: With dead ends: 7840 [2020-10-28 18:11:25,990 INFO L226 Difference]: Without dead ends: 5894 [2020-10-28 18:11:25,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:11:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5894 states. [2020-10-28 18:11:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5894 to 5891. [2020-10-28 18:11:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5891 states. [2020-10-28 18:11:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5891 states to 5891 states and 7959 transitions. [2020-10-28 18:11:26,518 INFO L78 Accepts]: Start accepts. Automaton has 5891 states and 7959 transitions. Word has length 115 [2020-10-28 18:11:26,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:26,519 INFO L481 AbstractCegarLoop]: Abstraction has 5891 states and 7959 transitions. [2020-10-28 18:11:26,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:11:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5891 states and 7959 transitions. [2020-10-28 18:11:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 18:11:26,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:26,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:26,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:11:26,526 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:26,527 INFO L82 PathProgramCache]: Analyzing trace with hash 936912332, now seen corresponding path program 1 times [2020-10-28 18:11:26,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:26,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903897375] [2020-10-28 18:11:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:26,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:27,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:27,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:30,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:32,010 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:11:32,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:32,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:32,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:32,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:32,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:11:32,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:32,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:11:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:11:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:32,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903897375] [2020-10-28 18:11:32,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:32,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:32,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136074221] [2020-10-28 18:11:32,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:11:32,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:32,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:11:32,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:11:32,073 INFO L87 Difference]: Start difference. First operand 5891 states and 7959 transitions. Second operand 6 states. [2020-10-28 18:11:32,465 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:11:33,733 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 18:11:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:35,113 INFO L93 Difference]: Finished difference Result 13283 states and 18597 transitions. [2020-10-28 18:11:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:11:35,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-28 18:11:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:35,133 INFO L225 Difference]: With dead ends: 13283 [2020-10-28 18:11:35,133 INFO L226 Difference]: Without dead ends: 8882 [2020-10-28 18:11:35,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:11:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2020-10-28 18:11:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 8867. [2020-10-28 18:11:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8867 states. [2020-10-28 18:11:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8867 states to 8867 states and 12293 transitions. [2020-10-28 18:11:36,000 INFO L78 Accepts]: Start accepts. Automaton has 8867 states and 12293 transitions. Word has length 115 [2020-10-28 18:11:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:36,001 INFO L481 AbstractCegarLoop]: Abstraction has 8867 states and 12293 transitions. [2020-10-28 18:11:36,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:11:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8867 states and 12293 transitions. [2020-10-28 18:11:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 18:11:36,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:36,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:36,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:11:36,007 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:36,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2109085863, now seen corresponding path program 1 times [2020-10-28 18:11:36,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:36,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304142841] [2020-10-28 18:11:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:36,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:36,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:36,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 18:11:36,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 18:11:36,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:36,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:11:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:11:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:11:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:36,674 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:11:36,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:36,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:36,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:36,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:11:36,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:36,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:11:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:11:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:36,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304142841] [2020-10-28 18:11:36,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:36,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:36,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177595404] [2020-10-28 18:11:36,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:11:36,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:36,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:11:36,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:11:36,740 INFO L87 Difference]: Start difference. First operand 8867 states and 12293 transitions. Second operand 6 states. [2020-10-28 18:11:37,132 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 18:11:38,518 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:11:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:40,028 INFO L93 Difference]: Finished difference Result 22802 states and 32395 transitions. [2020-10-28 18:11:40,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:11:40,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-28 18:11:40,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:40,049 INFO L225 Difference]: With dead ends: 22802 [2020-10-28 18:11:40,049 INFO L226 Difference]: Without dead ends: 15037 [2020-10-28 18:11:40,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:11:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2020-10-28 18:11:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 14999. [2020-10-28 18:11:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14999 states. [2020-10-28 18:11:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14999 states to 14999 states and 21161 transitions. [2020-10-28 18:11:41,319 INFO L78 Accepts]: Start accepts. Automaton has 14999 states and 21161 transitions. Word has length 115 [2020-10-28 18:11:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:41,320 INFO L481 AbstractCegarLoop]: Abstraction has 14999 states and 21161 transitions. [2020-10-28 18:11:41,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:11:41,320 INFO L276 IsEmpty]: Start isEmpty. Operand 14999 states and 21161 transitions. [2020-10-28 18:11:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 18:11:41,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:41,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:41,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:11:41,326 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:41,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1482394508, now seen corresponding path program 1 times [2020-10-28 18:11:41,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:41,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006232464] [2020-10-28 18:11:41,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 18:11:41,377 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 18:11:41,377 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 18:11:41,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:11:41,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 06:11:41 BoogieIcfgContainer [2020-10-28 18:11:41,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 18:11:41,431 INFO L168 Benchmark]: Toolchain (without parser) took 125007.60 ms. Allocated memory was 170.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 145.8 MB in the beginning and 993.1 MB in the end (delta: -847.3 MB). Peak memory consumption was 385.8 MB. Max. memory is 8.0 GB. [2020-10-28 18:11:41,431 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 18:11:41,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.00 ms. Allocated memory is still 170.9 MB. Free memory was 145.2 MB in the beginning and 121.6 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-28 18:11:41,432 INFO L168 Benchmark]: Boogie Preprocessor took 91.41 ms. Allocated memory is still 170.9 MB. Free memory was 121.6 MB in the beginning and 118.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 18:11:41,433 INFO L168 Benchmark]: RCFGBuilder took 1486.40 ms. Allocated memory is still 170.9 MB. Free memory was 117.9 MB in the beginning and 68.1 MB in the end (delta: 49.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-10-28 18:11:41,433 INFO L168 Benchmark]: TraceAbstraction took 122733.23 ms. Allocated memory was 170.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 67.6 MB in the beginning and 993.1 MB in the end (delta: -925.5 MB). Peak memory consumption was 307.2 MB. Max. memory is 8.0 GB. [2020-10-28 18:11:41,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 680.00 ms. Allocated memory is still 170.9 MB. Free memory was 145.2 MB in the beginning and 121.6 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 91.41 ms. Allocated memory is still 170.9 MB. Free memory was 121.6 MB in the beginning and 118.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1486.40 ms. Allocated memory is still 170.9 MB. Free memory was 117.9 MB in the beginning and 68.1 MB in the end (delta: 49.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 122733.23 ms. Allocated memory was 170.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 67.6 MB in the beginning and 993.1 MB in the end (delta: -925.5 MB). Peak memory consumption was 307.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] char id2 = '\x0'; [L50] unsigned char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1142; [L71] int __return_1270; [L72] int __return_1696; [L73] int __return_1389; [L74] int __return_1499; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_uchar() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_uchar() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_uchar() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L1835] COND TRUE !(init__r131 == 0) [L1837] COND TRUE !(ep32 == 0) [L1839] init__tmp = 1 [L137] init__r122 = (_Bool)init__tmp [L138] COND TRUE !(init__r131 == 0) [L140] init__tmp___0 = 1 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND TRUE !(init__r211 == 0) [L145] init__tmp___1 = 1 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L1766] COND TRUE !(init__r211 == 0) [L1768] COND TRUE !(ep13 == 0) [L1770] init__tmp___2 = 1 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L1743] COND TRUE !(init__r321 == 0) [L1745] COND TRUE !(ep21 == 0) [L1747] init__tmp___3 = 1 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND TRUE !(init__r321 == 0) [L160] init__tmp___4 = 1 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE !(init__r122 == 0) [L183] COND TRUE !(init__r132 == 0) [L185] COND TRUE !(init__r212 == 0) [L187] COND TRUE !(init__r232 == 0) [L189] COND TRUE !(init__r312 == 0) [L191] COND TRUE !(init__r322 == 0) [L193] COND TRUE ((int)max1) == ((int)id1) [L195] COND TRUE ((int)max2) == ((int)id2) [L197] COND TRUE ((int)max3) == ((int)id3) [L199] COND TRUE ((int)st1) == 0 [L201] COND TRUE ((int)st2) == 0 [L203] COND TRUE ((int)st3) == 0 [L205] COND TRUE ((int)nl1) == 0 [L207] COND TRUE ((int)nl2) == 0 [L209] COND TRUE ((int)nl3) == 0 [L211] COND TRUE ((int)mode1) == 0 [L213] COND TRUE ((int)mode2) == 0 [L215] COND TRUE ((int)mode3) == 0 [L217] init__tmp___5 = 1 [L218] __return_1142 = init__tmp___5 [L219] main__i2 = __return_1142 [L220] COND TRUE main__i2 != 0 [L222] p12_old = nomsg [L223] p12_new = nomsg [L224] p13_old = nomsg [L225] p13_new = nomsg [L226] p21_old = nomsg [L227] p21_new = nomsg [L228] p23_old = nomsg [L229] p23_new = nomsg [L230] p31_old = nomsg [L231] p31_new = nomsg [L232] p32_old = nomsg [L233] p32_new = nomsg [L234] main__i2 = 0 [L236] COND FALSE !(!(mode1 == 0)) [L242] COND TRUE ((int)r1) < 2 [L244] COND FALSE !(!(ep12 == 0)) [L255] COND TRUE !(ep13 == 0) [L257] int node1____CPAchecker_TMP_1; [L258] COND TRUE max1 != nomsg [L260] COND TRUE p13_new == nomsg [L262] node1____CPAchecker_TMP_1 = max1 [L264] p13_new = node1____CPAchecker_TMP_1 [L266] mode1 = 1 [L268] COND FALSE !(!(mode2 == 0)) [L274] COND TRUE ((int)r2) < 2 [L276] COND TRUE !(ep21 == 0) [L278] int node2____CPAchecker_TMP_0; [L279] COND TRUE max2 != nomsg [L281] COND TRUE p21_new == nomsg [L283] node2____CPAchecker_TMP_0 = max2 [L285] p21_new = node2____CPAchecker_TMP_0 [L287] COND FALSE !(!(ep23 == 0)) [L298] mode2 = 1 [L300] COND FALSE !(!(mode3 == 0)) [L306] COND TRUE ((int)r3) < 2 [L308] COND FALSE !(!(ep31 == 0)) [L319] COND TRUE !(ep32 == 0) [L321] int node3____CPAchecker_TMP_1; [L322] COND TRUE max3 != nomsg [L324] COND TRUE p32_new == nomsg [L326] node3____CPAchecker_TMP_1 = max3 [L328] p32_new = node3____CPAchecker_TMP_1 [L330] mode3 = 1 [L331] p12_old = p12_new [L332] p12_new = nomsg [L333] p13_old = p13_new [L334] p13_new = nomsg [L335] p21_old = p21_new [L336] p21_new = nomsg [L337] p23_old = p23_new [L338] p23_new = nomsg [L339] p31_old = p31_new [L340] p31_new = nomsg [L341] p32_old = p32_new [L342] p32_new = nomsg [L344] int check__tmp; [L345] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L347] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L349] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L351] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] COND FALSE !(((int)r1) >= 2) [L369] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L371] COND TRUE ((int)r1) < 2 [L373] check__tmp = 1 [L374] __return_1270 = check__tmp [L375] main__c1 = __return_1270 [L377] _Bool __tmp_1; [L378] __tmp_1 = main__c1 [L379] _Bool assert__arg; [L380] assert__arg = __tmp_1 [L381] COND FALSE !(assert__arg == 0) [L388] COND TRUE !(mode1 == 0) [L390] COND FALSE !(r1 == 255) [L396] r1 = r1 + 1 [L397] COND TRUE !(ep21 == 0) [L399] m1 = p21_old [L400] p21_old = nomsg [L401] COND FALSE !(((int)m1) > ((int)max1)) [L405] COND FALSE !(!(ep31 == 0)) [L413] COND TRUE ((int)r1) == 1 [L415] COND TRUE ((int)max1) == ((int)id1) [L417] st1 = 1 [L418] mode1 = 0 [L420] COND TRUE !(mode2 == 0) [L422] COND FALSE !(r2 == 255) [L428] r2 = r2 + 1 [L429] COND FALSE !(!(ep12 == 0)) [L437] COND TRUE !(ep32 == 0) [L439] m2 = p32_old [L440] p32_old = nomsg [L441] COND TRUE ((int)m2) > ((int)max2) [L443] max2 = m2 [L445] COND FALSE !(((int)r2) == 2) [L451] mode2 = 0 [L453] COND TRUE !(mode3 == 0) [L455] COND FALSE !(r3 == 255) [L461] r3 = r3 + 1 [L462] COND TRUE !(ep13 == 0) [L464] m3 = p13_old [L465] p13_old = nomsg [L466] COND FALSE !(((int)m3) > ((int)max3)) [L470] COND FALSE !(!(ep23 == 0)) [L478] COND FALSE !(((int)r3) == 2) [L484] mode3 = 0 [L485] p12_old = p12_new [L486] p12_new = nomsg [L487] p13_old = p13_new [L488] p13_new = nomsg [L489] p21_old = p21_new [L490] p21_new = nomsg [L491] p23_old = p23_new [L492] p23_new = nomsg [L493] p31_old = p31_new [L494] p31_new = nomsg [L495] p32_old = p32_new [L496] p32_new = nomsg [L498] int check__tmp; [L499] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L501] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L503] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L505] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L507] COND FALSE !(((int)r1) >= 2) [L513] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L519] check__tmp = 0 [L520] __return_1696 = check__tmp [L521] main__c1 = __return_1696 [L523] _Bool __tmp_2; [L524] __tmp_2 = main__c1 [L525] _Bool assert__arg; [L526] assert__arg = __tmp_2 [L527] COND TRUE assert__arg == 0 [L529] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 122.6s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 37.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7145 SDtfs, 8190 SDslu, 6072 SDs, 0 SdLazy, 8369 SolverSat, 228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14999occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 213 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 77.4s InterpolantComputationTime, 1710 NumberOfCodeBlocks, 1710 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1580 ConstructedInterpolants, 0 QuantifiedInterpolants, 1087190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...