/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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:12:15,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:12:15,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:12:15,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:12:15,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:12:15,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:12:15,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:12:15,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:12:15,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:12:15,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:12:15,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:12:15,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:12:15,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:12:15,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:12:15,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:12:15,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:12:15,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:12:15,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:12:15,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:12:15,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:12:15,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:12:15,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:12:15,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:12:15,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:12:15,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:12:15,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:12:15,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:12:15,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:12:15,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:12:15,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:12:15,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:12:15,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:12:15,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:12:15,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:12:15,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:12:15,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:12:15,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:12:15,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:12:15,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:12:16,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:12:16,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:12:16,003 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 19:12:16,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:12:16,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:12:16,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:12:16,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:12:16,033 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:12:16,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:12:16,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:12:16,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:12:16,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:12:16,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:12:16,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:12:16,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:12:16,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:12:16,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:12:16,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:12:16,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:12:16,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:12:16,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:12:16,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:12:16,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:12:16,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:12:16,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:12:16,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:12:16,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:12:16,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:12:16,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:12:16,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:12:16,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:12:16,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:12:16,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:12:16,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:12:16,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:12:16,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:12:16,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:12:16,485 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:12:16,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 19:12:16,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ec36495a/4d69cfb642e640fd9b200ede17d8831b/FLAG011e7ed5a [2020-10-28 19:12:17,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:12:17,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 19:12:17,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ec36495a/4d69cfb642e640fd9b200ede17d8831b/FLAG011e7ed5a [2020-10-28 19:12:17,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ec36495a/4d69cfb642e640fd9b200ede17d8831b [2020-10-28 19:12:17,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:12:17,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:12:17,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:12:17,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:12:17,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:12:17,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:12:17" (1/1) ... [2020-10-28 19:12:17,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c3b710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:17, skipping insertion in model container [2020-10-28 19:12:17,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:12:17" (1/1) ... [2020-10-28 19:12:17,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:12:17,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:12:18,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:12:18,527 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:12:18,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:12:18,892 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:12:18,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18 WrapperNode [2020-10-28 19:12:18,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:12:18,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:12:18,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:12:18,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:12:18,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18" (1/1) ... [2020-10-28 19:12:18,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18" (1/1) ... [2020-10-28 19:12:18,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18" (1/1) ... [2020-10-28 19:12:18,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18" (1/1) ... [2020-10-28 19:12:19,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18" (1/1) ... [2020-10-28 19:12:19,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18" (1/1) ... [2020-10-28 19:12:19,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18" (1/1) ... [2020-10-28 19:12:19,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:12:19,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:12:19,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:12:19,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:12:19,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18" (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 19:12:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:12:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:12:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:12:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:12:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:12:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:12:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:12:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:12:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:12:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:12:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 19:12:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:12:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:12:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:12:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:12:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:12:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:12:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:12:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:12:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:12:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:12:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:12:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:12:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:12:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:12:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:12:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:12:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:12:20,976 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:12:20,977 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:12:20,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:12:20 BoogieIcfgContainer [2020-10-28 19:12:20,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:12:20,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:12:20,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:12:20,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:12:20,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:12:17" (1/3) ... [2020-10-28 19:12:20,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58867cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:12:20, skipping insertion in model container [2020-10-28 19:12:20,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:18" (2/3) ... [2020-10-28 19:12:20,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58867cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:12:20, skipping insertion in model container [2020-10-28 19:12:20,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:12:20" (3/3) ... [2020-10-28 19:12:20,990 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 19:12:21,003 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:12:21,009 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:12:21,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:12:21,058 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:12:21,059 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:12:21,059 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:12:21,059 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:12:21,059 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:12:21,059 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:12:21,060 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:12:21,060 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:12:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states. [2020-10-28 19:12:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 19:12:21,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:21,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:21,131 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash 188643954, now seen corresponding path program 1 times [2020-10-28 19:12:21,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:21,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477949684] [2020-10-28 19:12:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:21,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:23,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:26,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 19:12:26,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:12:26,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 19:12:26,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:26,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:12:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 19:12:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 19:12:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 19:12:27,258 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:12:27,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:27,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:27,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:27,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 19:12:27,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:27,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:12:27,442 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 19:12:27,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477949684] [2020-10-28 19:12:27,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:27,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:12:27,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312783179] [2020-10-28 19:12:27,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:12:27,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:27,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:12:27,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:12:27,478 INFO L87 Difference]: Start difference. First operand 427 states. Second operand 4 states. [2020-10-28 19:12:28,089 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 19:12:31,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:31,531 INFO L93 Difference]: Finished difference Result 784 states and 1373 transitions. [2020-10-28 19:12:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:12:31,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-28 19:12:31,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:31,556 INFO L225 Difference]: With dead ends: 784 [2020-10-28 19:12:31,557 INFO L226 Difference]: Without dead ends: 608 [2020-10-28 19:12:31,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:31,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-28 19:12:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 605. [2020-10-28 19:12:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-10-28 19:12:31,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 894 transitions. [2020-10-28 19:12:31,676 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 894 transitions. Word has length 149 [2020-10-28 19:12:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:31,678 INFO L481 AbstractCegarLoop]: Abstraction has 605 states and 894 transitions. [2020-10-28 19:12:31,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:12:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 894 transitions. [2020-10-28 19:12:31,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 19:12:31,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:31,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:31,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:12:31,686 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:31,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:31,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1037995146, now seen corresponding path program 1 times [2020-10-28 19:12:31,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:31,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6048444] [2020-10-28 19:12:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:31,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:31,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:32,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:32,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:35,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:36,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 19:12:36,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:12:36,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:12:36,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:36,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:12:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 19:12:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 19:12:36,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:12:37,288 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:12:37,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:37,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:37,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:37,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:37,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:12:37,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:37,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:37,378 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 19:12:37,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6048444] [2020-10-28 19:12:37,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:37,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:12:37,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462051403] [2020-10-28 19:12:37,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:12:37,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:37,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:12:37,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:12:37,386 INFO L87 Difference]: Start difference. First operand 605 states and 894 transitions. Second operand 4 states. [2020-10-28 19:12:37,814 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 19:12:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:40,466 INFO L93 Difference]: Finished difference Result 1229 states and 1867 transitions. [2020-10-28 19:12:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:12:40,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-28 19:12:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:40,475 INFO L225 Difference]: With dead ends: 1229 [2020-10-28 19:12:40,476 INFO L226 Difference]: Without dead ends: 988 [2020-10-28 19:12:40,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:40,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-10-28 19:12:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 985. [2020-10-28 19:12:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-10-28 19:12:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1476 transitions. [2020-10-28 19:12:40,575 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1476 transitions. Word has length 149 [2020-10-28 19:12:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:40,577 INFO L481 AbstractCegarLoop]: Abstraction has 985 states and 1476 transitions. [2020-10-28 19:12:40,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:12:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1476 transitions. [2020-10-28 19:12:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 19:12:40,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:40,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:40,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:12:40,583 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:40,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:40,586 INFO L82 PathProgramCache]: Analyzing trace with hash -632496009, now seen corresponding path program 1 times [2020-10-28 19:12:40,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:40,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080905893] [2020-10-28 19:12:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:41,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:42,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:45,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:45,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 19:12:45,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:12:45,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:12:45,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:45,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:12:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 19:12:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 19:12:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:46,245 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:12:46,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:46,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:46,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:12:46,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:46,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:12:46,334 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 19:12:46,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080905893] [2020-10-28 19:12:46,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:46,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:12:46,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374844974] [2020-10-28 19:12:46,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:12:46,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:46,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:12:46,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:12:46,340 INFO L87 Difference]: Start difference. First operand 985 states and 1476 transitions. Second operand 4 states. [2020-10-28 19:12:46,745 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 19:12:49,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:49,362 INFO L93 Difference]: Finished difference Result 2161 states and 3322 transitions. [2020-10-28 19:12:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:12:49,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-28 19:12:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:49,376 INFO L225 Difference]: With dead ends: 2161 [2020-10-28 19:12:49,376 INFO L226 Difference]: Without dead ends: 1752 [2020-10-28 19:12:49,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-10-28 19:12:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1749. [2020-10-28 19:12:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2020-10-28 19:12:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2644 transitions. [2020-10-28 19:12:49,461 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2644 transitions. Word has length 149 [2020-10-28 19:12:49,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:49,462 INFO L481 AbstractCegarLoop]: Abstraction has 1749 states and 2644 transitions. [2020-10-28 19:12:49,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:12:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2644 transitions. [2020-10-28 19:12:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 19:12:49,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:49,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:49,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:12:49,468 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash -642993074, now seen corresponding path program 1 times [2020-10-28 19:12:49,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:49,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888141823] [2020-10-28 19:12:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:49,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:49,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:50,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:54,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:54,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 19:12:54,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:12:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:12:54,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:54,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:12:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:12:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 19:12:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:55,263 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:12:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:55,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:55,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 19:12:55,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:55,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:55,500 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 19:12:55,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888141823] [2020-10-28 19:12:55,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:55,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:12:55,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291022266] [2020-10-28 19:12:55,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:12:55,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:55,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:12:55,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:55,505 INFO L87 Difference]: Start difference. First operand 1749 states and 2644 transitions. Second operand 5 states. [2020-10-28 19:12:58,464 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:00,090 INFO L93 Difference]: Finished difference Result 5040 states and 7609 transitions. [2020-10-28 19:13:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:00,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-28 19:13:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:00,109 INFO L225 Difference]: With dead ends: 5040 [2020-10-28 19:13:00,109 INFO L226 Difference]: Without dead ends: 3375 [2020-10-28 19:13:00,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:00,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2020-10-28 19:13:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 3348. [2020-10-28 19:13:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3348 states. [2020-10-28 19:13:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3348 states to 3348 states and 5015 transitions. [2020-10-28 19:13:00,332 INFO L78 Accepts]: Start accepts. Automaton has 3348 states and 5015 transitions. Word has length 149 [2020-10-28 19:13:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:00,332 INFO L481 AbstractCegarLoop]: Abstraction has 3348 states and 5015 transitions. [2020-10-28 19:13:00,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3348 states and 5015 transitions. [2020-10-28 19:13:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 19:13:00,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:00,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:00,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:13:00,339 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:00,339 INFO L82 PathProgramCache]: Analyzing trace with hash 356056698, now seen corresponding path program 1 times [2020-10-28 19:13:00,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:00,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724172083] [2020-10-28 19:13:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:01,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:04,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:05,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 19:13:05,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:13:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 19:13:05,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:05,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:13:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:05,872 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:13:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:05,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:05,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:13:05,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:05,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:05,968 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 19:13:05,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724172083] [2020-10-28 19:13:05,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:05,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:05,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060306371] [2020-10-28 19:13:05,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:05,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:05,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:05,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:05,971 INFO L87 Difference]: Start difference. First operand 3348 states and 5015 transitions. Second operand 5 states. [2020-10-28 19:13:08,642 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:10,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:10,020 INFO L93 Difference]: Finished difference Result 9783 states and 14610 transitions. [2020-10-28 19:13:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:10,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-28 19:13:10,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:10,053 INFO L225 Difference]: With dead ends: 9783 [2020-10-28 19:13:10,054 INFO L226 Difference]: Without dead ends: 6471 [2020-10-28 19:13:10,062 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 19:13:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2020-10-28 19:13:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 6410. [2020-10-28 19:13:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6410 states. [2020-10-28 19:13:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6410 states to 6410 states and 9503 transitions. [2020-10-28 19:13:10,492 INFO L78 Accepts]: Start accepts. Automaton has 6410 states and 9503 transitions. Word has length 150 [2020-10-28 19:13:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:10,492 INFO L481 AbstractCegarLoop]: Abstraction has 6410 states and 9503 transitions. [2020-10-28 19:13:10,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6410 states and 9503 transitions. [2020-10-28 19:13:10,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 19:13:10,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:10,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:10,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:13:10,503 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:10,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:10,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1473972276, now seen corresponding path program 1 times [2020-10-28 19:13:10,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:10,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452777079] [2020-10-28 19:13:10,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:10,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:11,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:12,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:15,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:15,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 19:13:15,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:13:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 19:13:15,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:15,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:13:15,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:16,095 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:13:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:16,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:16,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:16,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:13:16,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:16,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:16,217 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 19:13:16,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452777079] [2020-10-28 19:13:16,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:16,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:16,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495220652] [2020-10-28 19:13:16,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:16,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:16,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:16,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:16,221 INFO L87 Difference]: Start difference. First operand 6410 states and 9503 transitions. Second operand 5 states. [2020-10-28 19:13:19,510 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:20,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:20,961 INFO L93 Difference]: Finished difference Result 18451 states and 27306 transitions. [2020-10-28 19:13:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:20,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-28 19:13:20,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:21,026 INFO L225 Difference]: With dead ends: 18451 [2020-10-28 19:13:21,026 INFO L226 Difference]: Without dead ends: 12360 [2020-10-28 19:13:21,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12360 states. [2020-10-28 19:13:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12360 to 12299. [2020-10-28 19:13:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12299 states. [2020-10-28 19:13:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 18026 transitions. [2020-10-28 19:13:22,025 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 18026 transitions. Word has length 151 [2020-10-28 19:13:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:22,025 INFO L481 AbstractCegarLoop]: Abstraction has 12299 states and 18026 transitions. [2020-10-28 19:13:22,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:22,026 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 18026 transitions. [2020-10-28 19:13:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 19:13:22,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:22,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:22,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:13:22,049 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:22,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:22,050 INFO L82 PathProgramCache]: Analyzing trace with hash -629136967, now seen corresponding path program 1 times [2020-10-28 19:13:22,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:22,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097617011] [2020-10-28 19:13:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:22,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:23,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:25,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:27,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:27,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 19:13:27,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:13:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 19:13:27,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:27,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 19:13:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:27,626 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:13:27,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:27,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:27,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:27,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:13:27,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:27,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:27,747 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 19:13:27,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097617011] [2020-10-28 19:13:27,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:27,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:27,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898113621] [2020-10-28 19:13:27,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:27,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:27,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:27,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:27,750 INFO L87 Difference]: Start difference. First operand 12299 states and 18026 transitions. Second operand 5 states. [2020-10-28 19:13:30,871 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:32,802 INFO L93 Difference]: Finished difference Result 33416 states and 48783 transitions. [2020-10-28 19:13:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:32,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-28 19:13:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:32,854 INFO L225 Difference]: With dead ends: 33416 [2020-10-28 19:13:32,855 INFO L226 Difference]: Without dead ends: 21130 [2020-10-28 19:13:32,884 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 19:13:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21130 states. [2020-10-28 19:13:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21130 to 21098. [2020-10-28 19:13:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21098 states. [2020-10-28 19:13:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21098 states to 21098 states and 30448 transitions. [2020-10-28 19:13:34,199 INFO L78 Accepts]: Start accepts. Automaton has 21098 states and 30448 transitions. Word has length 152 [2020-10-28 19:13:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:34,199 INFO L481 AbstractCegarLoop]: Abstraction has 21098 states and 30448 transitions. [2020-10-28 19:13:34,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 21098 states and 30448 transitions. [2020-10-28 19:13:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 19:13:34,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:34,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:34,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:13:34,235 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:34,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:34,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1544875979, now seen corresponding path program 1 times [2020-10-28 19:13:34,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:34,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499943270] [2020-10-28 19:13:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:37,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:37,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 19:13:37,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:13:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3269 [2020-10-28 19:13:37,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:37,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 19:13:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:38,067 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:13:38,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:38,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:38,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:38,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:13:38,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:38,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:38,192 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 19:13:38,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499943270] [2020-10-28 19:13:38,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:38,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:38,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361010138] [2020-10-28 19:13:38,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:38,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:38,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:38,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:38,195 INFO L87 Difference]: Start difference. First operand 21098 states and 30448 transitions. Second operand 5 states. [2020-10-28 19:13:42,146 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:44,371 INFO L93 Difference]: Finished difference Result 56457 states and 81200 transitions. [2020-10-28 19:13:44,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:44,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-28 19:13:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:44,451 INFO L225 Difference]: With dead ends: 56457 [2020-10-28 19:13:44,452 INFO L226 Difference]: Without dead ends: 35910 [2020-10-28 19:13:44,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:44,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35910 states. [2020-10-28 19:13:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35910 to 35831. [2020-10-28 19:13:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35831 states. [2020-10-28 19:13:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35831 states to 35831 states and 50840 transitions. [2020-10-28 19:13:47,143 INFO L78 Accepts]: Start accepts. Automaton has 35831 states and 50840 transitions. Word has length 153 [2020-10-28 19:13:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:47,144 INFO L481 AbstractCegarLoop]: Abstraction has 35831 states and 50840 transitions. [2020-10-28 19:13:47,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 35831 states and 50840 transitions. [2020-10-28 19:13:47,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 19:13:47,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:47,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:47,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:13:47,187 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:47,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1111726694, now seen corresponding path program 1 times [2020-10-28 19:13:47,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:47,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898924178] [2020-10-28 19:13:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:47,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:47,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:47,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 19:13:47,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:13:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-28 19:13:47,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:47,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 19:13:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:48,484 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:13:48,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:48,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:48,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:13:48,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:48,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:48,641 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 19:13:48,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898924178] [2020-10-28 19:13:48,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:48,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:48,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853325854] [2020-10-28 19:13:48,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:48,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:48,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:48,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:48,644 INFO L87 Difference]: Start difference. First operand 35831 states and 50840 transitions. Second operand 5 states. [2020-10-28 19:13:53,470 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:57,270 INFO L93 Difference]: Finished difference Result 95298 states and 134587 transitions. [2020-10-28 19:13:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:57,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-28 19:13:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:57,393 INFO L225 Difference]: With dead ends: 95298 [2020-10-28 19:13:57,394 INFO L226 Difference]: Without dead ends: 60565 [2020-10-28 19:13:57,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60565 states. [2020-10-28 19:14:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60565 to 60486. [2020-10-28 19:14:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60486 states. [2020-10-28 19:14:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60486 states to 60486 states and 84199 transitions. [2020-10-28 19:14:01,951 INFO L78 Accepts]: Start accepts. Automaton has 60486 states and 84199 transitions. Word has length 154 [2020-10-28 19:14:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:14:01,952 INFO L481 AbstractCegarLoop]: Abstraction has 60486 states and 84199 transitions. [2020-10-28 19:14:01,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:14:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 60486 states and 84199 transitions. [2020-10-28 19:14:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:14:01,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:14:02,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:02,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:14:02,000 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:14:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:14:02,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1868426763, now seen corresponding path program 1 times [2020-10-28 19:14:02,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:14:02,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619219670] [2020-10-28 19:14:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:14:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 19:14:02,057 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 19:14:02,058 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 19:14:02,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:14:02,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 07:14:02 BoogieIcfgContainer [2020-10-28 19:14:02,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 19:14:02,122 INFO L168 Benchmark]: Toolchain (without parser) took 104475.44 ms. Allocated memory was 155.2 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 128.4 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 494.7 MB. Max. memory is 8.0 GB. [2020-10-28 19:14:02,122 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 19:14:02,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1235.58 ms. Allocated memory is still 155.2 MB. Free memory was 127.6 MB in the beginning and 131.1 MB in the end (delta: -3.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. [2020-10-28 19:14:02,124 INFO L168 Benchmark]: Boogie Preprocessor took 188.76 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 125.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-28 19:14:02,125 INFO L168 Benchmark]: RCFGBuilder took 1896.27 ms. Allocated memory was 155.2 MB in the beginning and 213.9 MB in the end (delta: 58.7 MB). Free memory was 125.8 MB in the beginning and 90.7 MB in the end (delta: 35.1 MB). Peak memory consumption was 93.3 MB. Max. memory is 8.0 GB. [2020-10-28 19:14:02,125 INFO L168 Benchmark]: TraceAbstraction took 101138.31 ms. Allocated memory was 213.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 90.2 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 396.4 MB. Max. memory is 8.0 GB. [2020-10-28 19:14:02,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1235.58 ms. Allocated memory is still 155.2 MB. Free memory was 127.6 MB in the beginning and 131.1 MB in the end (delta: -3.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 188.76 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 125.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1896.27 ms. Allocated memory was 155.2 MB in the beginning and 213.9 MB in the end (delta: 58.7 MB). Free memory was 125.8 MB in the beginning and 90.7 MB in the end (delta: 35.1 MB). Peak memory consumption was 93.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 101138.31 ms. Allocated memory was 213.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 90.2 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 396.4 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] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1873; [L74] int __return_2019; [L75] int __return_2152; [L76] int __return_2288; [L77] int __return_3084; [L78] int __return_3053; [L79] int __return_2989; [L80] int __return_2955; [L81] int __return_2551; [L82] int __return_2840; [L83] int __return_2806; [L84] int __return_2721; [L85] int __return_2426; [L88] int main__c1; [L89] int main__i2; [L90] main__c1 = 0 [L91] ep12 = __VERIFIER_nondet_bool() [L92] ep13 = __VERIFIER_nondet_bool() [L93] ep21 = __VERIFIER_nondet_bool() [L94] ep23 = __VERIFIER_nondet_bool() [L95] ep31 = __VERIFIER_nondet_bool() [L96] ep32 = __VERIFIER_nondet_bool() [L97] id1 = __VERIFIER_nondet_char() [L98] r1 = __VERIFIER_nondet_uchar() [L99] st1 = __VERIFIER_nondet_char() [L100] nl1 = __VERIFIER_nondet_char() [L101] m1 = __VERIFIER_nondet_char() [L102] max1 = __VERIFIER_nondet_char() [L103] mode1 = __VERIFIER_nondet_bool() [L104] newmax1 = __VERIFIER_nondet_bool() [L105] id2 = __VERIFIER_nondet_char() [L106] r2 = __VERIFIER_nondet_uchar() [L107] st2 = __VERIFIER_nondet_char() [L108] nl2 = __VERIFIER_nondet_char() [L109] m2 = __VERIFIER_nondet_char() [L110] max2 = __VERIFIER_nondet_char() [L111] mode2 = __VERIFIER_nondet_bool() [L112] newmax2 = __VERIFIER_nondet_bool() [L113] id3 = __VERIFIER_nondet_char() [L114] r3 = __VERIFIER_nondet_uchar() [L115] st3 = __VERIFIER_nondet_char() [L116] nl3 = __VERIFIER_nondet_char() [L117] m3 = __VERIFIER_nondet_char() [L118] max3 = __VERIFIER_nondet_char() [L119] mode3 = __VERIFIER_nondet_bool() [L120] newmax3 = __VERIFIER_nondet_bool() [L122] _Bool init__r121; [L123] _Bool init__r131; [L124] _Bool init__r211; [L125] _Bool init__r231; [L126] _Bool init__r311; [L127] _Bool init__r321; [L128] _Bool init__r122; [L129] int init__tmp; [L130] _Bool init__r132; [L131] int init__tmp___0; [L132] _Bool init__r212; [L133] int init__tmp___1; [L134] _Bool init__r232; [L135] int init__tmp___2; [L136] _Bool init__r312; [L137] int init__tmp___3; [L138] _Bool init__r322; [L139] int init__tmp___4; [L140] int init__tmp___5; [L141] init__r121 = ep12 [L142] init__r131 = ep13 [L143] init__r211 = ep21 [L144] init__r231 = ep23 [L145] init__r311 = ep31 [L146] init__r321 = ep32 [L147] COND FALSE !(!(init__r121 == 0)) [L3188] COND FALSE !(!(init__r131 == 0)) [L3204] init__tmp = 0 [L151] init__r122 = (_Bool)init__tmp [L152] COND FALSE !(!(init__r131 == 0)) [L3165] COND FALSE !(!(init__r121 == 0)) [L3181] init__tmp___0 = 0 [L156] init__r132 = (_Bool)init__tmp___0 [L157] COND FALSE !(!(init__r211 == 0)) [L3142] COND FALSE !(!(init__r231 == 0)) [L3158] init__tmp___1 = 0 [L161] init__r212 = (_Bool)init__tmp___1 [L162] COND FALSE !(!(init__r231 == 0)) [L3119] COND FALSE !(!(init__r211 == 0)) [L3135] init__tmp___2 = 0 [L166] init__r232 = (_Bool)init__tmp___2 [L167] COND FALSE !(!(init__r311 == 0)) [L3096] COND FALSE !(!(init__r321 == 0)) [L3112] init__tmp___3 = 0 [L171] init__r312 = (_Bool)init__tmp___3 [L172] COND FALSE !(!(init__r321 == 0)) [L3073] COND FALSE !(!(init__r311 == 0)) [L3089] init__tmp___4 = 0 [L176] init__r322 = (_Bool)init__tmp___4 [L177] COND TRUE ((int)id1) != ((int)id2) [L179] COND TRUE ((int)id1) != ((int)id3) [L181] COND TRUE ((int)id2) != ((int)id3) [L183] COND TRUE ((int)id1) >= 0 [L185] COND TRUE ((int)id2) >= 0 [L187] COND TRUE ((int)id3) >= 0 [L189] COND TRUE ((int)r1) == 0 [L191] COND TRUE ((int)r2) == 0 [L193] COND TRUE ((int)r3) == 0 [L195] COND TRUE ((int)max1) == ((int)id1) [L197] COND TRUE ((int)max2) == ((int)id2) [L199] COND TRUE ((int)max3) == ((int)id3) [L201] COND TRUE ((int)st1) == 0 [L203] COND TRUE ((int)st2) == 0 [L205] COND TRUE ((int)st3) == 0 [L207] COND TRUE ((int)nl1) == 0 [L209] COND TRUE ((int)nl2) == 0 [L211] COND TRUE ((int)nl3) == 0 [L213] COND TRUE ((int)mode1) == 0 [L215] COND TRUE ((int)mode2) == 0 [L217] COND TRUE ((int)mode3) == 0 [L219] COND TRUE !(newmax1 == 0) [L221] COND TRUE !(newmax2 == 0) [L223] COND TRUE !(newmax3 == 0) [L225] init__tmp___5 = 1 [L226] __return_1873 = init__tmp___5 [L227] main__i2 = __return_1873 [L228] COND TRUE main__i2 != 0 [L230] p12_old = nomsg [L231] p12_new = nomsg [L232] p13_old = nomsg [L233] p13_new = nomsg [L234] p21_old = nomsg [L235] p21_new = nomsg [L236] p23_old = nomsg [L237] p23_new = nomsg [L238] p31_old = nomsg [L239] p31_new = nomsg [L240] p32_old = nomsg [L241] p32_new = nomsg [L242] main__i2 = 0 [L244] _Bool node1__newmax; [L245] node1__newmax = 0 [L246] COND FALSE !(!(mode1 == 0)) [L252] COND TRUE ((int)r1) < 2 [L254] COND FALSE !(!(ep12 == 0)) [L267] COND FALSE !(!(ep13 == 0)) [L280] mode1 = 1 [L282] _Bool node2__newmax; [L283] node2__newmax = 0 [L284] COND FALSE !(!(mode2 == 0)) [L290] COND TRUE ((int)r2) < 2 [L292] COND FALSE !(!(ep21 == 0)) [L305] COND FALSE !(!(ep23 == 0)) [L318] mode2 = 1 [L320] _Bool node3__newmax; [L321] node3__newmax = 0 [L322] COND FALSE !(!(mode3 == 0)) [L328] COND TRUE ((int)r3) < 2 [L330] COND FALSE !(!(ep31 == 0)) [L343] COND FALSE !(!(ep32 == 0)) [L356] mode3 = 1 [L357] p12_old = p12_new [L358] p12_new = nomsg [L359] p13_old = p13_new [L360] p13_new = nomsg [L361] p21_old = p21_new [L362] p21_new = nomsg [L363] p23_old = p23_new [L364] p23_new = nomsg [L365] p31_old = p31_new [L366] p31_new = nomsg [L367] p32_old = p32_new [L368] p32_new = nomsg [L370] int check__tmp; [L371] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L373] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L375] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L377] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L379] COND FALSE !(((int)r1) >= 2) [L385] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L387] COND TRUE ((int)r1) < 2 [L389] COND FALSE !(((int)r1) >= 2) [L395] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L397] COND TRUE ((int)r1) < 2 [L399] check__tmp = 1 [L400] __return_2019 = check__tmp [L401] main__c1 = __return_2019 [L403] _Bool __tmp_1; [L404] __tmp_1 = main__c1 [L405] _Bool assert__arg; [L406] assert__arg = __tmp_1 [L407] COND FALSE !(assert__arg == 0) [L414] _Bool node1__newmax; [L415] node1__newmax = 0 [L416] COND TRUE !(mode1 == 0) [L418] COND FALSE !(r1 == 255) [L424] r1 = r1 + 1 [L425] COND FALSE !(!(ep21 == 0)) [L434] COND FALSE !(!(ep31 == 0)) [L443] newmax1 = node1__newmax [L444] COND FALSE !(((int)r1) == 2) [L450] mode1 = 0 [L452] _Bool node2__newmax; [L453] node2__newmax = 0 [L454] COND TRUE !(mode2 == 0) [L456] COND FALSE !(r2 == 255) [L462] r2 = r2 + 1 [L463] COND FALSE !(!(ep12 == 0)) [L472] COND FALSE !(!(ep32 == 0)) [L481] newmax2 = node2__newmax [L482] COND FALSE !(((int)r2) == 2) [L488] mode2 = 0 [L490] _Bool node3__newmax; [L491] node3__newmax = 0 [L492] COND TRUE !(mode3 == 0) [L494] COND FALSE !(r3 == 255) [L500] r3 = r3 + 1 [L501] COND FALSE !(!(ep13 == 0)) [L510] COND FALSE !(!(ep23 == 0)) [L519] newmax3 = node3__newmax [L520] COND FALSE !(((int)r3) == 2) [L526] mode3 = 0 [L527] p12_old = p12_new [L528] p12_new = nomsg [L529] p13_old = p13_new [L530] p13_new = nomsg [L531] p21_old = p21_new [L532] p21_new = nomsg [L533] p23_old = p23_new [L534] p23_new = nomsg [L535] p31_old = p31_new [L536] p31_new = nomsg [L537] p32_old = p32_new [L538] p32_new = nomsg [L540] int check__tmp; [L541] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L543] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L545] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L547] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L549] COND FALSE !(((int)r1) >= 2) [L555] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L557] COND TRUE ((int)r1) < 2 [L559] COND FALSE !(((int)r1) >= 2) [L565] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L567] COND TRUE ((int)r1) < 2 [L569] check__tmp = 1 [L570] __return_2152 = check__tmp [L571] main__c1 = __return_2152 [L573] _Bool __tmp_2; [L574] __tmp_2 = main__c1 [L575] _Bool assert__arg; [L576] assert__arg = __tmp_2 [L577] COND FALSE !(assert__arg == 0) [L584] _Bool node1__newmax; [L585] node1__newmax = 0 [L586] COND FALSE !(!(mode1 == 0)) [L592] COND TRUE ((int)r1) < 2 [L594] COND FALSE !(!(ep12 == 0)) [L607] COND FALSE !(!(ep13 == 0)) [L620] mode1 = 1 [L622] _Bool node2__newmax; [L623] node2__newmax = 0 [L624] COND FALSE !(!(mode2 == 0)) [L630] COND TRUE ((int)r2) < 2 [L632] COND FALSE !(!(ep21 == 0)) [L645] COND FALSE !(!(ep23 == 0)) [L658] mode2 = 1 [L660] _Bool node3__newmax; [L661] node3__newmax = 0 [L662] COND FALSE !(!(mode3 == 0)) [L668] COND TRUE ((int)r3) < 2 [L670] COND FALSE !(!(ep31 == 0)) [L683] COND FALSE !(!(ep32 == 0)) [L696] mode3 = 1 [L697] p12_old = p12_new [L698] p12_new = nomsg [L699] p13_old = p13_new [L700] p13_new = nomsg [L701] p21_old = p21_new [L702] p21_new = nomsg [L703] p23_old = p23_new [L704] p23_new = nomsg [L705] p31_old = p31_new [L706] p31_new = nomsg [L707] p32_old = p32_new [L708] p32_new = nomsg [L710] int check__tmp; [L711] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L713] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L715] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L717] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L719] COND FALSE !(((int)r1) >= 2) [L725] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L727] COND TRUE ((int)r1) < 2 [L729] COND FALSE !(((int)r1) >= 2) [L735] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L737] COND TRUE ((int)r1) < 2 [L739] check__tmp = 1 [L740] __return_2288 = check__tmp [L741] main__c1 = __return_2288 [L743] _Bool __tmp_3; [L744] __tmp_3 = main__c1 [L745] _Bool assert__arg; [L746] assert__arg = __tmp_3 [L747] COND FALSE !(assert__arg == 0) [L754] _Bool node1__newmax; [L755] node1__newmax = 0 [L756] COND TRUE !(mode1 == 0) [L758] COND FALSE !(r1 == 255) [L764] r1 = r1 + 1 [L765] COND FALSE !(!(ep21 == 0)) [L774] COND FALSE !(!(ep31 == 0)) [L783] newmax1 = node1__newmax [L784] COND TRUE ((int)r1) == 2 [L786] COND TRUE ((int)max1) == ((int)id1) [L788] st1 = 1 [L789] mode1 = 0 [L791] _Bool node2__newmax; [L792] node2__newmax = 0 [L793] COND TRUE !(mode2 == 0) [L795] COND FALSE !(r2 == 255) [L801] r2 = r2 + 1 [L802] COND FALSE !(!(ep12 == 0)) [L811] COND FALSE !(!(ep32 == 0)) [L820] newmax2 = node2__newmax [L821] COND TRUE ((int)r2) == 2 [L823] COND TRUE ((int)max2) == ((int)id2) [L825] st2 = 1 [L826] mode2 = 0 [L828] _Bool node3__newmax; [L829] node3__newmax = 0 [L830] COND TRUE !(mode3 == 0) [L832] COND FALSE !(r3 == 255) [L838] r3 = r3 + 1 [L839] COND FALSE !(!(ep13 == 0)) [L848] COND FALSE !(!(ep23 == 0)) [L857] newmax3 = node3__newmax [L858] COND TRUE ((int)r3) == 2 [L860] COND TRUE ((int)max3) == ((int)id3) [L862] st3 = 1 [L863] mode3 = 0 [L864] p12_old = p12_new [L865] p12_new = nomsg [L866] p13_old = p13_new [L867] p13_new = nomsg [L868] p21_old = p21_new [L869] p21_new = nomsg [L870] p23_old = p23_new [L871] p23_new = nomsg [L872] p31_old = p31_new [L873] p31_new = nomsg [L874] p32_old = p32_new [L875] p32_new = nomsg [L877] int check__tmp; [L878] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L884] check__tmp = 0 [L885] __return_3084 = check__tmp [L886] main__c1 = __return_3084 [L888] _Bool __tmp_4; [L889] __tmp_4 = main__c1 [L890] _Bool assert__arg; [L891] assert__arg = __tmp_4 [L892] COND TRUE assert__arg == 0 [L894] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 431 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 101.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 44.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7908 SDtfs, 8557 SDslu, 4564 SDs, 0 SdLazy, 8665 SolverSat, 208 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60486occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 348 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 44.5s InterpolantComputationTime, 1511 NumberOfCodeBlocks, 1511 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1347 ConstructedInterpolants, 0 QuantifiedInterpolants, 1489824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...