./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label06.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/eca-rers2012/Problem12_label06.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 b8e390e3329fd730c72061af7f4f756de3cffbc4334952b16b06779e5db77927 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 12:08:47,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 12:08:47,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 12:08:47,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 12:08:47,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 12:08:47,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 12:08:47,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 12:08:47,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 12:08:47,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 12:08:47,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 12:08:47,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 12:08:47,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 12:08:47,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 12:08:47,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 12:08:47,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 12:08:47,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 12:08:47,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 12:08:47,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 12:08:47,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 12:08:47,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 12:08:47,602 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 12:08:47,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 12:08:47,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 12:08:47,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 12:08:47,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 12:08:47,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 12:08:47,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 12:08:47,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 12:08:47,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 12:08:47,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 12:08:47,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 12:08:47,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 12:08:47,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 12:08:47,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 12:08:47,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 12:08:47,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 12:08:47,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 12:08:47,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 12:08:47,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 12:08:47,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 12:08:47,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 12:08:47,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 12:08:47,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 12:08:47,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 12:08:47,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 12:08:47,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 12:08:47,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 12:08:47,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 12:08:47,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 12:08:47,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 12:08:47,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 12:08:47,671 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 12:08:47,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 12:08:47,672 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 12:08:47,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 12:08:47,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 12:08:47,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 12:08:47,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 12:08:47,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 12:08:47,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 12:08:47,673 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 12:08:47,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 12:08:47,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 12:08:47,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 12:08:47,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 12:08:47,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 12:08:47,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 12:08:47,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:08:47,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 12:08:47,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 12:08:47,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 12:08:47,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 12:08:47,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 12:08:47,677 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 12:08:47,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 12:08:47,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 12:08:47,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e390e3329fd730c72061af7f4f756de3cffbc4334952b16b06779e5db77927 [2022-07-19 12:08:47,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 12:08:47,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 12:08:47,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 12:08:47,947 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 12:08:47,948 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 12:08:47,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label06.c [2022-07-19 12:08:48,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02db97b88/7be1d8de862c44678c1b227aef2a5e28/FLAG82edbee8a [2022-07-19 12:08:48,697 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 12:08:48,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label06.c [2022-07-19 12:08:48,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02db97b88/7be1d8de862c44678c1b227aef2a5e28/FLAG82edbee8a [2022-07-19 12:08:48,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02db97b88/7be1d8de862c44678c1b227aef2a5e28 [2022-07-19 12:08:48,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 12:08:48,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 12:08:48,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 12:08:48,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 12:08:48,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 12:08:48,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:08:48" (1/1) ... [2022-07-19 12:08:48,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648fd0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:48, skipping insertion in model container [2022-07-19 12:08:48,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:08:48" (1/1) ... [2022-07-19 12:08:48,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 12:08:48,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 12:08:49,197 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/eca-rers2012/Problem12_label06.c[3178,3191] [2022-07-19 12:08:49,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:08:49,986 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 12:08:50,014 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/eca-rers2012/Problem12_label06.c[3178,3191] [2022-07-19 12:08:50,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:08:50,423 INFO L208 MainTranslator]: Completed translation [2022-07-19 12:08:50,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50 WrapperNode [2022-07-19 12:08:50,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 12:08:50,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 12:08:50,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 12:08:50,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 12:08:50,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:50,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:50,843 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-19 12:08:50,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 12:08:50,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 12:08:50,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 12:08:50,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 12:08:50,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:50,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:50,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:50,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:51,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:51,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:51,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:51,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 12:08:51,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 12:08:51,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 12:08:51,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 12:08:51,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (1/1) ... [2022-07-19 12:08:51,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:08:51,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:08:51,397 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 12:08:51,465 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 12:08:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 12:08:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 12:08:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 12:08:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 12:08:51,651 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 12:08:51,653 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 12:08:54,933 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 12:08:54,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 12:08:54,948 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 12:08:54,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:08:54 BoogieIcfgContainer [2022-07-19 12:08:54,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 12:08:54,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 12:08:54,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 12:08:54,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 12:08:54,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 12:08:48" (1/3) ... [2022-07-19 12:08:54,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bb4e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:08:54, skipping insertion in model container [2022-07-19 12:08:54,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:50" (2/3) ... [2022-07-19 12:08:54,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bb4e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:08:54, skipping insertion in model container [2022-07-19 12:08:54,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:08:54" (3/3) ... [2022-07-19 12:08:54,959 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label06.c [2022-07-19 12:08:54,972 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 12:08:54,973 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 12:08:55,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 12:08:55,035 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@5bf64745, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c6664a3 [2022-07-19 12:08:55,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 12:08:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 12:08:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 12:08:55,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:55,051 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] [2022-07-19 12:08:55,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash -573341295, now seen corresponding path program 1 times [2022-07-19 12:08:55,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:55,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197899614] [2022-07-19 12:08:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:55,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:55,236 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 12:08:55,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:55,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197899614] [2022-07-19 12:08:55,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197899614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:55,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:55,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:08:55,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499758332] [2022-07-19 12:08:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:55,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:55,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:55,275 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 12:08:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:58,825 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-07-19 12:08:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:08:58,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2022-07-19 12:08:58,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:58,846 INFO L225 Difference]: With dead ends: 2388 [2022-07-19 12:08:58,847 INFO L226 Difference]: Without dead ends: 1506 [2022-07-19 12:08:58,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:58,855 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 874 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:58,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 12:08:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-19 12:08:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-19 12:08:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 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 12:08:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2022-07-19 12:08:58,940 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 23 [2022-07-19 12:08:58,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:58,941 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2022-07-19 12:08:58,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 12:08:58,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2022-07-19 12:08:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 12:08:58,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:58,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:08:58,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 12:08:58,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1310443010, now seen corresponding path program 1 times [2022-07-19 12:08:58,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:58,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186405537] [2022-07-19 12:08:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:58,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:08:59,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:59,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186405537] [2022-07-19 12:08:59,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186405537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:59,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:59,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:08:59,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911304082] [2022-07-19 12:08:59,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:59,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:59,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:59,075 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 12:09:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:01,679 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2022-07-19 12:09:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:01,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 92 [2022-07-19 12:09:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:01,690 INFO L225 Difference]: With dead ends: 3761 [2022-07-19 12:09:01,691 INFO L226 Difference]: Without dead ends: 2257 [2022-07-19 12:09:01,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:01,699 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:01,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:09:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-19 12:09:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-07-19 12:09:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 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 12:09:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2022-07-19 12:09:01,747 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 92 [2022-07-19 12:09:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:01,748 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2022-07-19 12:09:01,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 12:09:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2022-07-19 12:09:01,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 12:09:01,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:01,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:01,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 12:09:01,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1915116317, now seen corresponding path program 1 times [2022-07-19 12:09:01,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:01,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679271761] [2022-07-19 12:09:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 12:09:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:01,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679271761] [2022-07-19 12:09:01,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679271761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:01,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:01,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:09:01,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974897642] [2022-07-19 12:09:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:01,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:01,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:01,886 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 12:09:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:04,636 INFO L93 Difference]: Finished difference Result 6765 states and 9754 transitions. [2022-07-19 12:09:04,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:04,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 94 [2022-07-19 12:09:04,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:04,654 INFO L225 Difference]: With dead ends: 6765 [2022-07-19 12:09:04,654 INFO L226 Difference]: Without dead ends: 4510 [2022-07-19 12:09:04,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:04,660 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 726 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:04,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 618 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 12:09:04,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-07-19 12:09:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2022-07-19 12:09:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.2929696163229096) internal successors, (5830), 4509 states have internal predecessors, (5830), 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 12:09:04,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5830 transitions. [2022-07-19 12:09:04,754 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5830 transitions. Word has length 94 [2022-07-19 12:09:04,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:04,755 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 5830 transitions. [2022-07-19 12:09:04,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 12:09:04,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5830 transitions. [2022-07-19 12:09:04,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-19 12:09:04,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:04,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:04,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 12:09:04,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:04,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:04,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1286630802, now seen corresponding path program 1 times [2022-07-19 12:09:04,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:04,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42912669] [2022-07-19 12:09:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:04,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:09:04,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:04,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42912669] [2022-07-19 12:09:04,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42912669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:04,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:04,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:04,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962132298] [2022-07-19 12:09:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:04,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:09:04,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:09:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:09:04,874 INFO L87 Difference]: Start difference. First operand 4510 states and 5830 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 12:09:09,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:09,127 INFO L93 Difference]: Finished difference Result 14275 states and 18284 transitions. [2022-07-19 12:09:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:09:09,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 100 [2022-07-19 12:09:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:09,159 INFO L225 Difference]: With dead ends: 14275 [2022-07-19 12:09:09,160 INFO L226 Difference]: Without dead ends: 9767 [2022-07-19 12:09:09,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:09:09,168 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2182 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:09,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 164 Invalid, 5423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-19 12:09:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-07-19 12:09:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-07-19 12:09:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.255785377841491) internal successors, (12264), 9766 states have internal predecessors, (12264), 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 12:09:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12264 transitions. [2022-07-19 12:09:09,399 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12264 transitions. Word has length 100 [2022-07-19 12:09:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:09,400 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12264 transitions. [2022-07-19 12:09:09,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 12:09:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12264 transitions. [2022-07-19 12:09:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-19 12:09:09,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:09,412 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:09,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 12:09:09,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:09,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:09,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1224781952, now seen corresponding path program 1 times [2022-07-19 12:09:09,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:09,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170403897] [2022-07-19 12:09:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:09:09,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:09,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170403897] [2022-07-19 12:09:09,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170403897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:09,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:09,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:09,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212011739] [2022-07-19 12:09:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:09,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:09:09,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:09,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:09:09,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:09:09,552 INFO L87 Difference]: Start difference. First operand 9767 states and 12264 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 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 12:09:12,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:12,474 INFO L93 Difference]: Finished difference Result 21822 states and 27290 transitions. [2022-07-19 12:09:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:09:12,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 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 171 [2022-07-19 12:09:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:12,508 INFO L225 Difference]: With dead ends: 21822 [2022-07-19 12:09:12,509 INFO L226 Difference]: Without dead ends: 12771 [2022-07-19 12:09:12,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:09:12,520 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3680 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:12,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 616 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3680 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 12:09:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2022-07-19 12:09:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12020. [2022-07-19 12:09:12,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2085032032615026) internal successors, (14525), 12019 states have internal predecessors, (14525), 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 12:09:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14525 transitions. [2022-07-19 12:09:12,669 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14525 transitions. Word has length 171 [2022-07-19 12:09:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:12,669 INFO L495 AbstractCegarLoop]: Abstraction has 12020 states and 14525 transitions. [2022-07-19 12:09:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 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 12:09:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14525 transitions. [2022-07-19 12:09:12,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-19 12:09:12,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:12,674 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:12,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 12:09:12,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:12,675 INFO L85 PathProgramCache]: Analyzing trace with hash 685432098, now seen corresponding path program 1 times [2022-07-19 12:09:12,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734776974] [2022-07-19 12:09:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-19 12:09:12,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:12,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734776974] [2022-07-19 12:09:12,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734776974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:12,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:12,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:12,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721609177] [2022-07-19 12:09:12,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:12,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:12,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:12,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:12,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:12,835 INFO L87 Difference]: Start difference. First operand 12020 states and 14525 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 12:09:15,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:15,351 INFO L93 Difference]: Finished difference Result 27793 states and 34552 transitions. [2022-07-19 12:09:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:15,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 235 [2022-07-19 12:09:15,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:15,375 INFO L225 Difference]: With dead ends: 27793 [2022-07-19 12:09:15,375 INFO L226 Difference]: Without dead ends: 16526 [2022-07-19 12:09:15,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:15,388 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 763 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:15,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 495 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:09:15,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2022-07-19 12:09:15,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 12020. [2022-07-19 12:09:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2085032032615026) internal successors, (14525), 12019 states have internal predecessors, (14525), 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 12:09:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14525 transitions. [2022-07-19 12:09:15,543 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14525 transitions. Word has length 235 [2022-07-19 12:09:15,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:15,543 INFO L495 AbstractCegarLoop]: Abstraction has 12020 states and 14525 transitions. [2022-07-19 12:09:15,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 12:09:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14525 transitions. [2022-07-19 12:09:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-19 12:09:15,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:15,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:15,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 12:09:15,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:15,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 855237449, now seen corresponding path program 1 times [2022-07-19 12:09:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:15,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607983110] [2022-07-19 12:09:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-19 12:09:15,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:15,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607983110] [2022-07-19 12:09:15,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607983110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:15,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:15,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:09:15,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259920043] [2022-07-19 12:09:15,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:15,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:15,645 INFO L87 Difference]: Start difference. First operand 12020 states and 14525 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 12:09:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:18,158 INFO L93 Difference]: Finished difference Result 31550 states and 38845 transitions. [2022-07-19 12:09:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 236 [2022-07-19 12:09:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:18,187 INFO L225 Difference]: With dead ends: 31550 [2022-07-19 12:09:18,188 INFO L226 Difference]: Without dead ends: 20283 [2022-07-19 12:09:18,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:18,200 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:18,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:09:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2022-07-19 12:09:18,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 18779. [2022-07-19 12:09:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.1888380019171372) internal successors, (22324), 18778 states have internal predecessors, (22324), 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 12:09:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 22324 transitions. [2022-07-19 12:09:18,417 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 22324 transitions. Word has length 236 [2022-07-19 12:09:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:18,418 INFO L495 AbstractCegarLoop]: Abstraction has 18779 states and 22324 transitions. [2022-07-19 12:09:18,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 12:09:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 22324 transitions. [2022-07-19 12:09:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-19 12:09:18,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:18,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:18,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 12:09:18,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:18,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:18,423 INFO L85 PathProgramCache]: Analyzing trace with hash -422645196, now seen corresponding path program 1 times [2022-07-19 12:09:18,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:18,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100285096] [2022-07-19 12:09:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:18,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 12:09:18,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:18,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100285096] [2022-07-19 12:09:18,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100285096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:18,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:18,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:18,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309549841] [2022-07-19 12:09:18,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:18,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:18,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:18,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:18,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:18,536 INFO L87 Difference]: Start difference. First operand 18779 states and 22324 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 12:09:20,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:20,866 INFO L93 Difference]: Finished difference Result 43564 states and 53013 transitions. [2022-07-19 12:09:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:20,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 322 [2022-07-19 12:09:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:20,929 INFO L225 Difference]: With dead ends: 43564 [2022-07-19 12:09:20,929 INFO L226 Difference]: Without dead ends: 25538 [2022-07-19 12:09:20,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:20,949 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:20,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1216 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 12:09:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2022-07-19 12:09:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 24036. [2022-07-19 12:09:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24036 states, 24035 states have (on average 1.1785313085084252) internal successors, (28326), 24035 states have internal predecessors, (28326), 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 12:09:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24036 states to 24036 states and 28326 transitions. [2022-07-19 12:09:21,243 INFO L78 Accepts]: Start accepts. Automaton has 24036 states and 28326 transitions. Word has length 322 [2022-07-19 12:09:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:21,244 INFO L495 AbstractCegarLoop]: Abstraction has 24036 states and 28326 transitions. [2022-07-19 12:09:21,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 12:09:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 24036 states and 28326 transitions. [2022-07-19 12:09:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-07-19 12:09:21,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:21,250 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 12:09:21,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 12:09:21,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:21,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:21,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1577199462, now seen corresponding path program 1 times [2022-07-19 12:09:21,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:21,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175911852] [2022-07-19 12:09:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:21,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 12:09:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:21,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175911852] [2022-07-19 12:09:21,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175911852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:21,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:21,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:21,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373329392] [2022-07-19 12:09:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:21,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:21,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:21,370 INFO L87 Difference]: Start difference. First operand 24036 states and 28326 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 12:09:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:24,197 INFO L93 Difference]: Finished difference Result 60837 states and 71503 transitions. [2022-07-19 12:09:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:24,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 350 [2022-07-19 12:09:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:24,243 INFO L225 Difference]: With dead ends: 60837 [2022-07-19 12:09:24,244 INFO L226 Difference]: Without dead ends: 37554 [2022-07-19 12:09:24,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:24,268 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:24,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1247 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 12:09:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2022-07-19 12:09:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 35301. [2022-07-19 12:09:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35301 states, 35300 states have (on average 1.1668555240793201) internal successors, (41190), 35300 states have internal predecessors, (41190), 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 12:09:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35301 states to 35301 states and 41190 transitions. [2022-07-19 12:09:24,650 INFO L78 Accepts]: Start accepts. Automaton has 35301 states and 41190 transitions. Word has length 350 [2022-07-19 12:09:24,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:24,651 INFO L495 AbstractCegarLoop]: Abstraction has 35301 states and 41190 transitions. [2022-07-19 12:09:24,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 12:09:24,651 INFO L276 IsEmpty]: Start isEmpty. Operand 35301 states and 41190 transitions. [2022-07-19 12:09:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-07-19 12:09:24,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:24,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:24,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 12:09:24,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash 549530084, now seen corresponding path program 1 times [2022-07-19 12:09:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:24,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854192678] [2022-07-19 12:09:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-19 12:09:24,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:24,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854192678] [2022-07-19 12:09:24,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854192678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:24,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:24,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:24,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668237602] [2022-07-19 12:09:24,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:24,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:24,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:24,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:24,766 INFO L87 Difference]: Start difference. First operand 35301 states and 41190 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 12:09:27,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:27,556 INFO L93 Difference]: Finished difference Result 102893 states and 120518 transitions. [2022-07-19 12:09:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:27,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 354 [2022-07-19 12:09:27,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:27,637 INFO L225 Difference]: With dead ends: 102893 [2022-07-19 12:09:27,638 INFO L226 Difference]: Without dead ends: 63839 [2022-07-19 12:09:27,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:27,675 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 770 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:27,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1315 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:09:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63839 states. [2022-07-19 12:09:28,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63839 to 53325. [2022-07-19 12:09:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53325 states, 53324 states have (on average 1.1311416997974646) internal successors, (60317), 53324 states have internal predecessors, (60317), 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 12:09:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53325 states to 53325 states and 60317 transitions. [2022-07-19 12:09:28,355 INFO L78 Accepts]: Start accepts. Automaton has 53325 states and 60317 transitions. Word has length 354 [2022-07-19 12:09:28,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:28,356 INFO L495 AbstractCegarLoop]: Abstraction has 53325 states and 60317 transitions. [2022-07-19 12:09:28,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 12:09:28,356 INFO L276 IsEmpty]: Start isEmpty. Operand 53325 states and 60317 transitions. [2022-07-19 12:09:28,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-07-19 12:09:28,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:28,362 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:28,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 12:09:28,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:28,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:28,363 INFO L85 PathProgramCache]: Analyzing trace with hash -640071796, now seen corresponding path program 1 times [2022-07-19 12:09:28,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:28,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152821868] [2022-07-19 12:09:28,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:28,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 12:09:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:28,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152821868] [2022-07-19 12:09:28,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152821868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:28,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:28,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:28,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058262105] [2022-07-19 12:09:28,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:28,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:28,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:28,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:28,467 INFO L87 Difference]: Start difference. First operand 53325 states and 60317 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 12:09:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:31,158 INFO L93 Difference]: Finished difference Result 135186 states and 154639 transitions. [2022-07-19 12:09:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:31,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 361 [2022-07-19 12:09:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:31,357 INFO L225 Difference]: With dead ends: 135186 [2022-07-19 12:09:31,357 INFO L226 Difference]: Without dead ends: 82614 [2022-07-19 12:09:31,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:31,382 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 722 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:31,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1234 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:09:31,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82614 states. [2022-07-19 12:09:32,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82614 to 77357. [2022-07-19 12:09:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77357 states, 77356 states have (on average 1.1153627385076788) internal successors, (86280), 77356 states have internal predecessors, (86280), 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 12:09:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77357 states to 77357 states and 86280 transitions. [2022-07-19 12:09:32,177 INFO L78 Accepts]: Start accepts. Automaton has 77357 states and 86280 transitions. Word has length 361 [2022-07-19 12:09:32,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:32,177 INFO L495 AbstractCegarLoop]: Abstraction has 77357 states and 86280 transitions. [2022-07-19 12:09:32,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 12:09:32,178 INFO L276 IsEmpty]: Start isEmpty. Operand 77357 states and 86280 transitions. [2022-07-19 12:09:32,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-07-19 12:09:32,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:32,184 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:32,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 12:09:32,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:32,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1518718614, now seen corresponding path program 1 times [2022-07-19 12:09:32,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:32,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349084168] [2022-07-19 12:09:32,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:32,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-07-19 12:09:32,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:32,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349084168] [2022-07-19 12:09:32,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349084168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:32,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:32,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723206469] [2022-07-19 12:09:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:32,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:32,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:32,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:32,432 INFO L87 Difference]: Start difference. First operand 77357 states and 86280 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 12:09:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:35,150 INFO L93 Difference]: Finished difference Result 165226 states and 183750 transitions. [2022-07-19 12:09:35,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:35,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 382 [2022-07-19 12:09:35,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:35,248 INFO L225 Difference]: With dead ends: 165226 [2022-07-19 12:09:35,249 INFO L226 Difference]: Without dead ends: 88622 [2022-07-19 12:09:35,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:35,289 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 763 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:35,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1248 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:09:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88622 states. [2022-07-19 12:09:36,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88622 to 85618. [2022-07-19 12:09:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85618 states, 85617 states have (on average 1.0999684642068748) internal successors, (94176), 85617 states have internal predecessors, (94176), 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 12:09:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85618 states to 85618 states and 94176 transitions. [2022-07-19 12:09:36,349 INFO L78 Accepts]: Start accepts. Automaton has 85618 states and 94176 transitions. Word has length 382 [2022-07-19 12:09:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:36,350 INFO L495 AbstractCegarLoop]: Abstraction has 85618 states and 94176 transitions. [2022-07-19 12:09:36,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 12:09:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 85618 states and 94176 transitions. [2022-07-19 12:09:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-07-19 12:09:36,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:36,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:36,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 12:09:36,360 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:36,360 INFO L85 PathProgramCache]: Analyzing trace with hash 282573416, now seen corresponding path program 1 times [2022-07-19 12:09:36,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:36,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528577969] [2022-07-19 12:09:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:36,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-19 12:09:36,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:36,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528577969] [2022-07-19 12:09:36,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528577969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:36,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:36,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:36,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667012939] [2022-07-19 12:09:36,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:36,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:36,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:36,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:36,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:36,683 INFO L87 Difference]: Start difference. First operand 85618 states and 94176 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 12:09:39,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:39,292 INFO L93 Difference]: Finished difference Result 170483 states and 187594 transitions. [2022-07-19 12:09:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:39,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 458 [2022-07-19 12:09:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:39,392 INFO L225 Difference]: With dead ends: 170483 [2022-07-19 12:09:39,392 INFO L226 Difference]: Without dead ends: 85618 [2022-07-19 12:09:39,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:39,435 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 795 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:39,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 408 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 12:09:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85618 states. [2022-07-19 12:09:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85618 to 83365. [2022-07-19 12:09:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83365 states, 83364 states have (on average 1.0677510676071207) internal successors, (89012), 83364 states have internal predecessors, (89012), 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 12:09:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83365 states to 83365 states and 89012 transitions. [2022-07-19 12:09:40,453 INFO L78 Accepts]: Start accepts. Automaton has 83365 states and 89012 transitions. Word has length 458 [2022-07-19 12:09:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:40,454 INFO L495 AbstractCegarLoop]: Abstraction has 83365 states and 89012 transitions. [2022-07-19 12:09:40,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 12:09:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 83365 states and 89012 transitions. [2022-07-19 12:09:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-07-19 12:09:40,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:40,467 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:40,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 12:09:40,468 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1267059596, now seen corresponding path program 1 times [2022-07-19 12:09:40,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:40,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163137871] [2022-07-19 12:09:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:40,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 448 proven. 229 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 12:09:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:40,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163137871] [2022-07-19 12:09:40,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163137871] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:09:40,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585248052] [2022-07-19 12:09:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:40,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:09:40,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:09:40,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:09:40,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 12:09:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:41,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:09:41,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:09:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-07-19 12:09:41,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:09:41,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585248052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:41,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:09:41,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-19 12:09:41,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014878270] [2022-07-19 12:09:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:41,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:41,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:41,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:41,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:09:41,167 INFO L87 Difference]: Start difference. First operand 83365 states and 89012 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 12:09:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:43,952 INFO L93 Difference]: Finished difference Result 187005 states and 201029 transitions. [2022-07-19 12:09:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 525 [2022-07-19 12:09:43,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:44,202 INFO L225 Difference]: With dead ends: 187005 [2022-07-19 12:09:44,202 INFO L226 Difference]: Without dead ends: 104393 [2022-07-19 12:09:44,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:09:44,235 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 649 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:44,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1391 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:09:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104393 states. [2022-07-19 12:09:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104393 to 93128. [2022-07-19 12:09:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93128 states, 93127 states have (on average 1.0624738260654805) internal successors, (98945), 93127 states have internal predecessors, (98945), 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 12:09:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93128 states to 93128 states and 98945 transitions. [2022-07-19 12:09:45,360 INFO L78 Accepts]: Start accepts. Automaton has 93128 states and 98945 transitions. Word has length 525 [2022-07-19 12:09:45,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:45,360 INFO L495 AbstractCegarLoop]: Abstraction has 93128 states and 98945 transitions. [2022-07-19 12:09:45,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 12:09:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 93128 states and 98945 transitions. [2022-07-19 12:09:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-07-19 12:09:45,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:45,379 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:45,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 12:09:45,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 12:09:45,596 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1177537696, now seen corresponding path program 1 times [2022-07-19 12:09:45,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:45,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250662400] [2022-07-19 12:09:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:45,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2022-07-19 12:09:45,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:45,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250662400] [2022-07-19 12:09:45,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250662400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:45,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:45,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:45,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936591744] [2022-07-19 12:09:45,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:45,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:45,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:45,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:45,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:45,885 INFO L87 Difference]: Start difference. First operand 93128 states and 98945 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 12:09:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:48,485 INFO L93 Difference]: Finished difference Result 202776 states and 215855 transitions. [2022-07-19 12:09:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:48,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 601 [2022-07-19 12:09:48,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:48,638 INFO L225 Difference]: With dead ends: 202776 [2022-07-19 12:09:48,639 INFO L226 Difference]: Without dead ends: 110401 [2022-07-19 12:09:48,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:48,692 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 851 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:48,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1117 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:09:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110401 states. [2022-07-19 12:09:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110401 to 108899. [2022-07-19 12:09:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108899 states, 108898 states have (on average 1.0576778269573361) internal successors, (115179), 108898 states have internal predecessors, (115179), 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 12:09:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108899 states to 108899 states and 115179 transitions. [2022-07-19 12:09:49,980 INFO L78 Accepts]: Start accepts. Automaton has 108899 states and 115179 transitions. Word has length 601 [2022-07-19 12:09:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:49,980 INFO L495 AbstractCegarLoop]: Abstraction has 108899 states and 115179 transitions. [2022-07-19 12:09:49,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 12:09:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 108899 states and 115179 transitions. [2022-07-19 12:09:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2022-07-19 12:09:50,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:50,227 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:50,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 12:09:50,227 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1437867540, now seen corresponding path program 1 times [2022-07-19 12:09:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:50,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56275424] [2022-07-19 12:09:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 811 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:09:50,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:50,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56275424] [2022-07-19 12:09:50,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56275424] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:09:50,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721809465] [2022-07-19 12:09:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:50,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:09:50,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:09:50,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:09:50,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 12:09:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:50,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-19 12:09:50,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:09:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 605 proven. 173 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-19 12:09:55,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 12:09:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-19 12:09:59,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721809465] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 12:09:59,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 12:09:59,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 12 [2022-07-19 12:09:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334801393] [2022-07-19 12:09:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:59,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:09:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:09:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-19 12:09:59,203 INFO L87 Difference]: Start difference. First operand 108899 states and 115179 transitions. Second operand has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:10:03,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:03,262 INFO L93 Difference]: Finished difference Result 258702 states and 273318 transitions. [2022-07-19 12:10:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:10:03,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 927 [2022-07-19 12:10:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:03,432 INFO L225 Difference]: With dead ends: 258702 [2022-07-19 12:10:03,433 INFO L226 Difference]: Without dead ends: 149805 [2022-07-19 12:10:03,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1862 GetRequests, 1850 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-19 12:10:03,464 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1059 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4289 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 4847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 4289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:03,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1028 Invalid, 4847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 4289 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 12:10:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149805 states. [2022-07-19 12:10:04,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149805 to 109650. [2022-07-19 12:10:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109650 states, 109649 states have (on average 1.0572827841567183) internal successors, (115930), 109649 states have internal predecessors, (115930), 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 12:10:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109650 states to 109650 states and 115930 transitions. [2022-07-19 12:10:05,119 INFO L78 Accepts]: Start accepts. Automaton has 109650 states and 115930 transitions. Word has length 927 [2022-07-19 12:10:05,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:05,120 INFO L495 AbstractCegarLoop]: Abstraction has 109650 states and 115930 transitions. [2022-07-19 12:10:05,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 12:10:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand 109650 states and 115930 transitions. [2022-07-19 12:10:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2022-07-19 12:10:05,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:05,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:05,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 12:10:05,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 12:10:05,380 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:05,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1751533265, now seen corresponding path program 1 times [2022-07-19 12:10:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:05,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695834628] [2022-07-19 12:10:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:05,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 710 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-07-19 12:10:05,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:05,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695834628] [2022-07-19 12:10:05,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695834628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:05,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:05,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:05,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559895872] [2022-07-19 12:10:05,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:05,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:05,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:05,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:05,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:05,616 INFO L87 Difference]: Start difference. First operand 109650 states and 115930 transitions. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 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 12:10:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:09,085 INFO L93 Difference]: Finished difference Result 263607 states and 279145 transitions. [2022-07-19 12:10:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 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 983 [2022-07-19 12:10:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:09,274 INFO L225 Difference]: With dead ends: 263607 [2022-07-19 12:10:09,274 INFO L226 Difference]: Without dead ends: 154710 [2022-07-19 12:10:09,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:09,325 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 714 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:09,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 577 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 12:10:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154710 states. [2022-07-19 12:10:10,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154710 to 147951. [2022-07-19 12:10:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147951 states, 147950 states have (on average 1.0539979722879351) internal successors, (155939), 147950 states have internal predecessors, (155939), 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 12:10:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147951 states to 147951 states and 155939 transitions. [2022-07-19 12:10:11,091 INFO L78 Accepts]: Start accepts. Automaton has 147951 states and 155939 transitions. Word has length 983 [2022-07-19 12:10:11,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:11,091 INFO L495 AbstractCegarLoop]: Abstraction has 147951 states and 155939 transitions. [2022-07-19 12:10:11,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 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 12:10:11,092 INFO L276 IsEmpty]: Start isEmpty. Operand 147951 states and 155939 transitions. [2022-07-19 12:10:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2022-07-19 12:10:11,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:11,444 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:10:11,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 12:10:11,444 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:11,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -145187198, now seen corresponding path program 1 times [2022-07-19 12:10:11,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:11,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097381761] [2022-07-19 12:10:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:11,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-19 12:10:11,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:11,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097381761] [2022-07-19 12:10:11,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097381761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:11,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:11,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:10:11,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158321861] [2022-07-19 12:10:11,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:11,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:10:11,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:11,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:10:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:10:11,791 INFO L87 Difference]: Start difference. First operand 147951 states and 155939 transitions. Second operand has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 12:10:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:16,433 INFO L93 Difference]: Finished difference Result 339458 states and 356934 transitions. [2022-07-19 12:10:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:10:16,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 987 [2022-07-19 12:10:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:16,662 INFO L225 Difference]: With dead ends: 339458 [2022-07-19 12:10:16,663 INFO L226 Difference]: Without dead ends: 192260 [2022-07-19 12:10:16,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:10:16,752 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1122 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:16,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 29 Invalid, 5354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 4499 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-19 12:10:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192260 states. [2022-07-19 12:10:18,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192260 to 183248. [2022-07-19 12:10:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183248 states, 183247 states have (on average 1.0498671192434255) internal successors, (192385), 183247 states have internal predecessors, (192385), 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 12:10:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183248 states to 183248 states and 192385 transitions. [2022-07-19 12:10:19,054 INFO L78 Accepts]: Start accepts. Automaton has 183248 states and 192385 transitions. Word has length 987 [2022-07-19 12:10:19,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:19,055 INFO L495 AbstractCegarLoop]: Abstraction has 183248 states and 192385 transitions. [2022-07-19 12:10:19,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 12:10:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 183248 states and 192385 transitions. [2022-07-19 12:10:19,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2022-07-19 12:10:19,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:19,118 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:10:19,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 12:10:19,119 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:19,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1821421802, now seen corresponding path program 1 times [2022-07-19 12:10:19,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:19,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787137935] [2022-07-19 12:10:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:19,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 994 proven. 77 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-19 12:10:19,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:19,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787137935] [2022-07-19 12:10:19,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787137935] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:10:19,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717609161] [2022-07-19 12:10:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:19,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:10:19,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:10:19,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:10:19,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 12:10:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:19,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:10:19,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:10:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 994 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-19 12:10:20,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:10:20,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717609161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:20,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:10:20,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 12:10:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971879766] [2022-07-19 12:10:20,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:20,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:10:20,119 INFO L87 Difference]: Start difference. First operand 183248 states and 192385 transitions. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 12:10:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:23,193 INFO L93 Difference]: Finished difference Result 365743 states and 384012 transitions. [2022-07-19 12:10:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:23,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 990 [2022-07-19 12:10:23,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:23,395 INFO L225 Difference]: With dead ends: 365743 [2022-07-19 12:10:23,396 INFO L226 Difference]: Without dead ends: 183248 [2022-07-19 12:10:23,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 990 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:10:23,752 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 644 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:23,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1179 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:10:23,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2022-07-19 12:10:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 183248. [2022-07-19 12:10:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183248 states, 183247 states have (on average 1.0388710319950667) internal successors, (190370), 183247 states have internal predecessors, (190370), 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 12:10:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183248 states to 183248 states and 190370 transitions. [2022-07-19 12:10:25,982 INFO L78 Accepts]: Start accepts. Automaton has 183248 states and 190370 transitions. Word has length 990 [2022-07-19 12:10:25,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:25,982 INFO L495 AbstractCegarLoop]: Abstraction has 183248 states and 190370 transitions. [2022-07-19 12:10:25,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 12:10:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 183248 states and 190370 transitions. [2022-07-19 12:10:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2022-07-19 12:10:26,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:26,062 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:10:26,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 12:10:26,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:10:26,265 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1450510515, now seen corresponding path program 1 times [2022-07-19 12:10:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:26,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013297186] [2022-07-19 12:10:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:26,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 823 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-07-19 12:10:26,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:26,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013297186] [2022-07-19 12:10:26,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013297186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:26,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:26,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:26,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766611511] [2022-07-19 12:10:26,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:26,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:26,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:26,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:26,893 INFO L87 Difference]: Start difference. First operand 183248 states and 190370 transitions. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 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 12:10:29,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:29,881 INFO L93 Difference]: Finished difference Result 368747 states and 383046 transitions. [2022-07-19 12:10:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 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 1003 [2022-07-19 12:10:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:30,114 INFO L225 Difference]: With dead ends: 368747 [2022-07-19 12:10:30,114 INFO L226 Difference]: Without dead ends: 186252 [2022-07-19 12:10:30,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:30,203 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 790 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:30,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 909 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 12:10:30,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186252 states. [2022-07-19 12:10:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186252 to 175738. [2022-07-19 12:10:32,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175738 states, 175737 states have (on average 1.0365603145609632) internal successors, (182162), 175737 states have internal predecessors, (182162), 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)