./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 851dc7d49dcc9fde277beeb190c3ab252014728a3bd4281f423bffd927fb4430 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:16:10,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:16:10,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:16:10,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:16:10,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:16:10,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:16:10,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:16:10,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:16:10,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:16:10,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:16:10,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:16:10,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:16:10,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:16:10,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:16:10,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:16:10,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:16:10,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:16:10,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:16:10,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:16:10,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:16:10,966 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:16:10,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:16:10,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:16:10,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:16:10,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:16:10,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:16:10,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:16:10,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:16:10,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:16:10,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:16:10,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:16:10,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:16:10,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:16:10,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:16:10,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:16:10,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:16:10,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:16:10,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:16:10,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:16:10,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:16:10,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:16:10,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:16:10,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:16:11,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:16:11,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:16:11,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:16:11,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:16:11,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:16:11,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:16:11,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:16:11,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:16:11,019 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:16:11,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:16:11,020 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:16:11,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:16:11,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:16:11,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:16:11,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:16:11,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:16:11,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:16:11,021 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:16:11,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:16:11,023 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:16:11,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:16:11,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:16:11,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:16:11,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:16:11,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:16:11,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:16:11,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:16:11,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:16:11,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:16:11,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:16:11,025 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:16:11,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:16:11,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:16:11,025 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 851dc7d49dcc9fde277beeb190c3ab252014728a3bd4281f423bffd927fb4430 [2022-07-19 18:16:11,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:16:11,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:16:11,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:16:11,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:16:11,301 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:16:11,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:16:11,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde41d293/a3a08fce1dc44b88bdeaf13bdae06285/FLAG5229dafba [2022-07-19 18:16:11,826 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:16:11,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:16:11,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde41d293/a3a08fce1dc44b88bdeaf13bdae06285/FLAG5229dafba [2022-07-19 18:16:11,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde41d293/a3a08fce1dc44b88bdeaf13bdae06285 [2022-07-19 18:16:11,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:16:11,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:16:11,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:16:11,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:16:11,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:16:11,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:16:11" (1/1) ... [2022-07-19 18:16:11,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225f4945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:11, skipping insertion in model container [2022-07-19 18:16:11,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:16:11" (1/1) ... [2022-07-19 18:16:11,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:16:11,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:16:12,132 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2022-07-19 18:16:12,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:16:12,197 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:16:12,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2022-07-19 18:16:12,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:16:12,326 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:16:12,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12 WrapperNode [2022-07-19 18:16:12,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:16:12,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:16:12,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:16:12,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:16:12,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,438 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 946 [2022-07-19 18:16:12,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:16:12,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:16:12,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:16:12,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:16:12,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:16:12,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:16:12,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:16:12,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:16:12,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (1/1) ... [2022-07-19 18:16:12,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:16:12,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:16:12,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 18:16:12,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 18:16:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:16:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:16:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:16:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:16:12,739 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:16:12,757 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:16:13,430 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:16:13,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:16:13,438 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:16:13,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:16:13 BoogieIcfgContainer [2022-07-19 18:16:13,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:16:13,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:16:13,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:16:13,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:16:13,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:16:11" (1/3) ... [2022-07-19 18:16:13,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcbf597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:16:13, skipping insertion in model container [2022-07-19 18:16:13,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:16:12" (2/3) ... [2022-07-19 18:16:13,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcbf597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:16:13, skipping insertion in model container [2022-07-19 18:16:13,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:16:13" (3/3) ... [2022-07-19 18:16:13,460 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:16:13,472 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:16:13,473 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 18:16:13,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:16:13,529 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@737a2b8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78c340c3 [2022-07-19 18:16:13,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 18:16:13,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 256 states have (on average 1.72265625) internal successors, (441), 257 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 18:16:13,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:16:13,545 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:16:13,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:16:13,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:16:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash -165426501, now seen corresponding path program 1 times [2022-07-19 18:16:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:16:13,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456390425] [2022-07-19 18:16:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:16:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:16:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:16:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:16:14,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:16:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456390425] [2022-07-19 18:16:14,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456390425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:16:14,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:16:14,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:16:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025989378] [2022-07-19 18:16:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:16:14,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 18:16:14,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:16:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 18:16:14,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 18:16:14,065 INFO L87 Difference]: Start difference. First operand has 258 states, 256 states have (on average 1.72265625) internal successors, (441), 257 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:16:14,471 INFO L93 Difference]: Finished difference Result 1163 states and 1886 transitions. [2022-07-19 18:16:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 18:16:14,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-07-19 18:16:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:16:14,503 INFO L225 Difference]: With dead ends: 1163 [2022-07-19 18:16:14,503 INFO L226 Difference]: Without dead ends: 1022 [2022-07-19 18:16:14,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-19 18:16:14,511 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 3878 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3878 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:16:14,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3878 Valid, 3983 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:16:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-07-19 18:16:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 395. [2022-07-19 18:16:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.5076142131979695) internal successors, (594), 394 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 594 transitions. [2022-07-19 18:16:14,588 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 594 transitions. Word has length 96 [2022-07-19 18:16:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:16:14,588 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 594 transitions. [2022-07-19 18:16:14,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 594 transitions. [2022-07-19 18:16:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 18:16:14,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:16:14,592 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:16:14,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:16:14,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:16:14,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:16:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1176866191, now seen corresponding path program 1 times [2022-07-19 18:16:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:16:14,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493800684] [2022-07-19 18:16:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:16:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:16:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:16:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:16:14,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:16:14,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493800684] [2022-07-19 18:16:14,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493800684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:16:14,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:16:14,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:16:14,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333227723] [2022-07-19 18:16:14,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:16:14,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 18:16:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:16:14,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 18:16:14,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-19 18:16:14,885 INFO L87 Difference]: Start difference. First operand 395 states and 594 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:15,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:16:15,321 INFO L93 Difference]: Finished difference Result 1972 states and 3070 transitions. [2022-07-19 18:16:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 18:16:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-07-19 18:16:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:16:15,332 INFO L225 Difference]: With dead ends: 1972 [2022-07-19 18:16:15,333 INFO L226 Difference]: Without dead ends: 1676 [2022-07-19 18:16:15,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-19 18:16:15,342 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1783 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:16:15,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 2078 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:16:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2022-07-19 18:16:15,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1666. [2022-07-19 18:16:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 1.5537537537537538) internal successors, (2587), 1665 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2587 transitions. [2022-07-19 18:16:15,556 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2587 transitions. Word has length 97 [2022-07-19 18:16:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:16:15,559 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2587 transitions. [2022-07-19 18:16:15,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2587 transitions. [2022-07-19 18:16:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 18:16:15,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:16:15,567 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:16:15,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:16:15,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:16:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:16:15,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1298319018, now seen corresponding path program 1 times [2022-07-19 18:16:15,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:16:15,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548519242] [2022-07-19 18:16:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:16:15,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:16:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:16:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:16:15,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:16:15,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548519242] [2022-07-19 18:16:15,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548519242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:16:15,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:16:15,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:16:15,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843980248] [2022-07-19 18:16:15,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:16:15,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:16:15,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:16:15,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:16:15,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:16:15,709 INFO L87 Difference]: Start difference. First operand 1666 states and 2587 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:16:16,290 INFO L93 Difference]: Finished difference Result 4636 states and 7277 transitions. [2022-07-19 18:16:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:16:16,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-19 18:16:16,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:16:16,302 INFO L225 Difference]: With dead ends: 4636 [2022-07-19 18:16:16,303 INFO L226 Difference]: Without dead ends: 3021 [2022-07-19 18:16:16,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:16:16,312 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1477 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:16:16,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 355 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:16:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-07-19 18:16:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3019. [2022-07-19 18:16:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 3018 states have (on average 1.563949635520212) internal successors, (4720), 3018 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 4720 transitions. [2022-07-19 18:16:16,646 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 4720 transitions. Word has length 98 [2022-07-19 18:16:16,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:16:16,647 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 4720 transitions. [2022-07-19 18:16:16,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:16,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 4720 transitions. [2022-07-19 18:16:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 18:16:16,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:16:16,650 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:16:16,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:16:16,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:16:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:16:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2114426094, now seen corresponding path program 1 times [2022-07-19 18:16:16,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:16:16,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132458385] [2022-07-19 18:16:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:16:16,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:16:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:16:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:16:16,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:16:16,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132458385] [2022-07-19 18:16:16,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132458385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:16:16,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:16:16,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:16:16,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718194110] [2022-07-19 18:16:16,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:16:16,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:16:16,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:16:16,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:16:16,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:16:16,739 INFO L87 Difference]: Start difference. First operand 3019 states and 4720 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:17,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:16:17,498 INFO L93 Difference]: Finished difference Result 8182 states and 12873 transitions. [2022-07-19 18:16:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:16:17,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-19 18:16:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:16:17,525 INFO L225 Difference]: With dead ends: 8182 [2022-07-19 18:16:17,526 INFO L226 Difference]: Without dead ends: 5320 [2022-07-19 18:16:17,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:16:17,539 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1349 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:16:17,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 363 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:16:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5320 states. [2022-07-19 18:16:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5320 to 5318. [2022-07-19 18:16:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 1.5653564039872108) internal successors, (8323), 5317 states have internal predecessors, (8323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 8323 transitions. [2022-07-19 18:16:18,105 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 8323 transitions. Word has length 98 [2022-07-19 18:16:18,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:16:18,106 INFO L495 AbstractCegarLoop]: Abstraction has 5318 states and 8323 transitions. [2022-07-19 18:16:18,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 8323 transitions. [2022-07-19 18:16:18,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 18:16:18,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:16:18,110 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:16:18,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:16:18,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:16:18,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:16:18,111 INFO L85 PathProgramCache]: Analyzing trace with hash -280718047, now seen corresponding path program 1 times [2022-07-19 18:16:18,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:16:18,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695810710] [2022-07-19 18:16:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:16:18,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:16:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:16:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:16:18,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:16:18,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695810710] [2022-07-19 18:16:18,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695810710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:16:18,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:16:18,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:16:18,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203240174] [2022-07-19 18:16:18,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:16:18,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:16:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:16:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:16:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:16:18,181 INFO L87 Difference]: Start difference. First operand 5318 states and 8323 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:16:19,375 INFO L93 Difference]: Finished difference Result 15000 states and 23599 transitions. [2022-07-19 18:16:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:16:19,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-19 18:16:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:16:19,420 INFO L225 Difference]: With dead ends: 15000 [2022-07-19 18:16:19,421 INFO L226 Difference]: Without dead ends: 9880 [2022-07-19 18:16:19,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:16:19,433 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1337 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:16:19,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 372 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:16:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9880 states. [2022-07-19 18:16:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9880 to 9878. [2022-07-19 18:16:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9878 states, 9877 states have (on average 1.5669737774627923) internal successors, (15477), 9877 states have internal predecessors, (15477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9878 states to 9878 states and 15477 transitions. [2022-07-19 18:16:20,512 INFO L78 Accepts]: Start accepts. Automaton has 9878 states and 15477 transitions. Word has length 98 [2022-07-19 18:16:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:16:20,512 INFO L495 AbstractCegarLoop]: Abstraction has 9878 states and 15477 transitions. [2022-07-19 18:16:20,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 9878 states and 15477 transitions. [2022-07-19 18:16:20,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 18:16:20,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:16:20,522 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:16:20,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:16:20,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:16:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:16:20,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1024308035, now seen corresponding path program 1 times [2022-07-19 18:16:20,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:16:20,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401995340] [2022-07-19 18:16:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:16:20,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:16:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:16:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:16:20,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:16:20,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401995340] [2022-07-19 18:16:20,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401995340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:16:20,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:16:20,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:16:20,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343666918] [2022-07-19 18:16:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:16:20,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:16:20,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:16:20,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:16:20,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:16:20,595 INFO L87 Difference]: Start difference. First operand 9878 states and 15477 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:16:22,371 INFO L93 Difference]: Finished difference Result 28884 states and 45351 transitions. [2022-07-19 18:16:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:16:22,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-19 18:16:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:16:22,426 INFO L225 Difference]: With dead ends: 28884 [2022-07-19 18:16:22,426 INFO L226 Difference]: Without dead ends: 19126 [2022-07-19 18:16:22,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:16:22,446 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1373 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:16:22,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 359 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:16:22,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2022-07-19 18:16:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 19124. [2022-07-19 18:16:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19124 states, 19123 states have (on average 1.5631438581812478) internal successors, (29892), 19123 states have internal predecessors, (29892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19124 states to 19124 states and 29892 transitions. [2022-07-19 18:16:24,060 INFO L78 Accepts]: Start accepts. Automaton has 19124 states and 29892 transitions. Word has length 98 [2022-07-19 18:16:24,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:16:24,061 INFO L495 AbstractCegarLoop]: Abstraction has 19124 states and 29892 transitions. [2022-07-19 18:16:24,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 19124 states and 29892 transitions. [2022-07-19 18:16:24,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 18:16:24,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:16:24,067 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:16:24,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:16:24,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:16:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:16:24,068 INFO L85 PathProgramCache]: Analyzing trace with hash -866521676, now seen corresponding path program 1 times [2022-07-19 18:16:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:16:24,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987301770] [2022-07-19 18:16:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:16:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:16:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:16:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:16:24,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:16:24,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987301770] [2022-07-19 18:16:24,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987301770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:16:24,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:16:24,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:16:24,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113412026] [2022-07-19 18:16:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:16:24,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:16:24,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:16:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:16:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:16:24,125 INFO L87 Difference]: Start difference. First operand 19124 states and 29892 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:16:27,516 INFO L93 Difference]: Finished difference Result 56728 states and 88774 transitions. [2022-07-19 18:16:27,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:16:27,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-19 18:16:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:16:27,619 INFO L225 Difference]: With dead ends: 56728 [2022-07-19 18:16:27,620 INFO L226 Difference]: Without dead ends: 37694 [2022-07-19 18:16:27,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:16:27,657 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1399 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:16:27,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 357 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:16:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37694 states. [2022-07-19 18:16:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37694 to 37692. [2022-07-19 18:16:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37692 states, 37691 states have (on average 1.5573479079886445) internal successors, (58698), 37691 states have internal predecessors, (58698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37692 states to 37692 states and 58698 transitions. [2022-07-19 18:16:30,987 INFO L78 Accepts]: Start accepts. Automaton has 37692 states and 58698 transitions. Word has length 98 [2022-07-19 18:16:30,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:16:30,988 INFO L495 AbstractCegarLoop]: Abstraction has 37692 states and 58698 transitions. [2022-07-19 18:16:30,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 37692 states and 58698 transitions. [2022-07-19 18:16:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 18:16:30,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:16:30,998 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:16:30,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:16:30,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:16:30,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:16:30,999 INFO L85 PathProgramCache]: Analyzing trace with hash -677209499, now seen corresponding path program 1 times [2022-07-19 18:16:31,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:16:31,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428010160] [2022-07-19 18:16:31,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:16:31,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:16:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:16:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:16:31,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:16:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428010160] [2022-07-19 18:16:31,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428010160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:16:31,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:16:31,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:16:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097525615] [2022-07-19 18:16:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:16:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:16:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:16:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:16:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:16:31,162 INFO L87 Difference]: Start difference. First operand 37692 states and 58698 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:16:37,718 INFO L93 Difference]: Finished difference Result 112444 states and 175228 transitions. [2022-07-19 18:16:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:16:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-19 18:16:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:16:37,949 INFO L225 Difference]: With dead ends: 112444 [2022-07-19 18:16:37,950 INFO L226 Difference]: Without dead ends: 74819 [2022-07-19 18:16:38,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:16:38,024 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1421 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:16:38,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 357 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:16:38,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74819 states. [2022-07-19 18:16:44,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74819 to 74817. [2022-07-19 18:16:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74817 states, 74816 states have (on average 1.5499625748502994) internal successors, (115962), 74816 states have internal predecessors, (115962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74817 states to 74817 states and 115962 transitions. [2022-07-19 18:16:45,140 INFO L78 Accepts]: Start accepts. Automaton has 74817 states and 115962 transitions. Word has length 98 [2022-07-19 18:16:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:16:45,141 INFO L495 AbstractCegarLoop]: Abstraction has 74817 states and 115962 transitions. [2022-07-19 18:16:45,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:16:45,141 INFO L276 IsEmpty]: Start isEmpty. Operand 74817 states and 115962 transitions. [2022-07-19 18:16:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 18:16:45,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:16:45,158 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:16:45,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:16:45,158 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:16:45,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:16:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1615132955, now seen corresponding path program 1 times [2022-07-19 18:16:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:16:45,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186215840] [2022-07-19 18:16:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:16:45,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:16:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:16:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:16:45,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:16:45,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186215840] [2022-07-19 18:16:45,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186215840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:16:45,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:16:45,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:16:45,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390785563] [2022-07-19 18:16:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:16:45,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:16:45,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:16:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:16:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:16:45,245 INFO L87 Difference]: Start difference. First operand 74817 states and 115962 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)