./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.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 944b5ec42c2162154ede6c802018109a010424c3110973822c2880295480d39e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:42:37,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:42:37,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:42:37,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:42:37,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:42:37,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:42:37,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:42:37,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:42:37,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:42:37,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:42:37,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:42:37,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:42:37,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:42:37,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:42:37,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:42:37,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:42:37,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:42:37,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:42:37,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:42:37,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:42:37,533 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:42:37,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:42:37,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:42:37,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:42:37,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:42:37,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:42:37,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:42:37,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:42:37,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:42:37,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:42:37,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:42:37,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:42:37,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:42:37,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:42:37,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:42:37,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:42:37,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:42:37,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:42:37,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:42:37,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:42:37,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:42:37,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:42:37,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:42:37,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:42:37,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:42:37,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:42:37,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:42:37,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:42:37,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:42:37,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:42:37,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:42:37,589 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:42:37,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:42:37,590 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:42:37,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:42:37,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:42:37,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:42:37,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:42:37,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:42:37,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:42:37,591 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:42:37,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:42:37,591 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:42:37,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:42:37,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:42:37,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:42:37,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:42:37,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:42:37,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:42:37,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:42:37,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:42:37,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:42:37,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:42:37,593 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:42:37,593 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:42:37,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:42:37,594 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 944b5ec42c2162154ede6c802018109a010424c3110973822c2880295480d39e [2022-07-12 06:42:37,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:42:37,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:42:37,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:42:37,850 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:42:37,851 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:42:37,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2022-07-12 06:42:37,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bbdf17ef/a989f028af9d4926a73498e97ea31419/FLAG46f6ed382 [2022-07-12 06:42:38,319 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:42:38,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2022-07-12 06:42:38,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bbdf17ef/a989f028af9d4926a73498e97ea31419/FLAG46f6ed382 [2022-07-12 06:42:38,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bbdf17ef/a989f028af9d4926a73498e97ea31419 [2022-07-12 06:42:38,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:42:38,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:42:38,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:42:38,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:42:38,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:42:38,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:42:38" (1/1) ... [2022-07-12 06:42:38,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436de00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:38, skipping insertion in model container [2022-07-12 06:42:38,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:42:38" (1/1) ... [2022-07-12 06:42:38,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:42:38,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:42:39,003 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c[61047,61060] [2022-07-12 06:42:39,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:42:39,011 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:42:39,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c[61047,61060] [2022-07-12 06:42:39,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:42:39,148 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:42:39,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39 WrapperNode [2022-07-12 06:42:39,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:42:39,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:42:39,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:42:39,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:42:39,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,235 INFO L137 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2043 [2022-07-12 06:42:39,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:42:39,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:42:39,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:42:39,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:42:39,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:42:39,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:42:39,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:42:39,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:42:39,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (1/1) ... [2022-07-12 06:42:39,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:42:39,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:42:39,434 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) [2022-07-12 06:42:39,454 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 [2022-07-12 06:42:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:42:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:42:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:42:39,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:42:39,641 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:42:39,642 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:42:40,807 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:42:40,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:42:40,831 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:42:40,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:42:40 BoogieIcfgContainer [2022-07-12 06:42:40,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:42:40,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:42:40,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:42:40,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:42:40,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:42:38" (1/3) ... [2022-07-12 06:42:40,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55698bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:42:40, skipping insertion in model container [2022-07-12 06:42:40,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:42:39" (2/3) ... [2022-07-12 06:42:40,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55698bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:42:40, skipping insertion in model container [2022-07-12 06:42:40,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:42:40" (3/3) ... [2022-07-12 06:42:40,856 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2022-07-12 06:42:40,866 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:42:40,866 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:42:40,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:42:40,912 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@744029da, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13ab7f1f [2022-07-12 06:42:40,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:42:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 704 states have (on average 1.8508522727272727) internal successors, (1303), 705 states have internal predecessors, (1303), 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) [2022-07-12 06:42:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 06:42:40,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:40,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:40,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:40,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash -745157910, now seen corresponding path program 1 times [2022-07-12 06:42:40,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:40,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943510322] [2022-07-12 06:42:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:40,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:41,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:41,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943510322] [2022-07-12 06:42:41,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943510322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:41,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:41,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 06:42:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112069872] [2022-07-12 06:42:41,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:41,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:42:41,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:42:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:42:41,345 INFO L87 Difference]: Start difference. First operand has 706 states, 704 states have (on average 1.8508522727272727) internal successors, (1303), 705 states have internal predecessors, (1303), 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 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2022-07-12 06:42:41,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:41,425 INFO L93 Difference]: Finished difference Result 863 states and 1577 transitions. [2022-07-12 06:42:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:42:41,427 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 153 [2022-07-12 06:42:41,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:41,438 INFO L225 Difference]: With dead ends: 863 [2022-07-12 06:42:41,438 INFO L226 Difference]: Without dead ends: 702 [2022-07-12 06:42:41,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:42:41,443 INFO L413 NwaCegarLoop]: 1296 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:41,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-07-12 06:42:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2022-07-12 06:42:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.848787446504993) internal successors, (1296), 701 states have internal predecessors, (1296), 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) [2022-07-12 06:42:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1296 transitions. [2022-07-12 06:42:41,492 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1296 transitions. Word has length 153 [2022-07-12 06:42:41,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:41,492 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1296 transitions. [2022-07-12 06:42:41,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2022-07-12 06:42:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1296 transitions. [2022-07-12 06:42:41,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 06:42:41,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:41,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:41,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:42:41,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:41,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1254631000, now seen corresponding path program 1 times [2022-07-12 06:42:41,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:41,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337471844] [2022-07-12 06:42:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:41,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:41,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:41,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337471844] [2022-07-12 06:42:41,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337471844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:41,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:41,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:42:41,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724989640] [2022-07-12 06:42:41,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:41,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:42:41,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:41,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:42:41,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:42:41,652 INFO L87 Difference]: Start difference. First operand 702 states and 1296 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2022-07-12 06:42:41,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:41,804 INFO L93 Difference]: Finished difference Result 862 states and 1570 transitions. [2022-07-12 06:42:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:42:41,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 153 [2022-07-12 06:42:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:41,808 INFO L225 Difference]: With dead ends: 862 [2022-07-12 06:42:41,808 INFO L226 Difference]: Without dead ends: 702 [2022-07-12 06:42:41,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:42:41,810 INFO L413 NwaCegarLoop]: 1294 mSDtfsCounter, 3 mSDsluCounter, 3819 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5113 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:41,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5113 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:42:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-07-12 06:42:41,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2022-07-12 06:42:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.7631954350927246) internal successors, (1236), 701 states have internal predecessors, (1236), 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) [2022-07-12 06:42:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1236 transitions. [2022-07-12 06:42:41,830 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1236 transitions. Word has length 153 [2022-07-12 06:42:41,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:41,830 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1236 transitions. [2022-07-12 06:42:41,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2022-07-12 06:42:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1236 transitions. [2022-07-12 06:42:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-12 06:42:41,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:41,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:41,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:42:41,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:41,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1674803025, now seen corresponding path program 1 times [2022-07-12 06:42:41,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:41,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62144577] [2022-07-12 06:42:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:41,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:41,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:41,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62144577] [2022-07-12 06:42:41,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62144577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:41,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:41,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:41,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351175199] [2022-07-12 06:42:41,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:42,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:42,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:42,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:42,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:42,001 INFO L87 Difference]: Start difference. First operand 702 states and 1236 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2022-07-12 06:42:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:42,061 INFO L93 Difference]: Finished difference Result 1001 states and 1751 transitions. [2022-07-12 06:42:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:42,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 212 [2022-07-12 06:42:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:42,068 INFO L225 Difference]: With dead ends: 1001 [2022-07-12 06:42:42,068 INFO L226 Difference]: Without dead ends: 845 [2022-07-12 06:42:42,071 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 [2022-07-12 06:42:42,076 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 237 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:42,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2407 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-07-12 06:42:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 843. [2022-07-12 06:42:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 1.7517814726840855) internal successors, (1475), 842 states have internal predecessors, (1475), 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) [2022-07-12 06:42:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1475 transitions. [2022-07-12 06:42:42,133 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1475 transitions. Word has length 212 [2022-07-12 06:42:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:42,134 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1475 transitions. [2022-07-12 06:42:42,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2022-07-12 06:42:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1475 transitions. [2022-07-12 06:42:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-12 06:42:42,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:42,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:42,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:42:42,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1449767861, now seen corresponding path program 1 times [2022-07-12 06:42:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:42,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897734550] [2022-07-12 06:42:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:42,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897734550] [2022-07-12 06:42:42,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897734550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:42,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:42,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164935574] [2022-07-12 06:42:42,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:42,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:42,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:42,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:42,294 INFO L87 Difference]: Start difference. First operand 843 states and 1475 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2022-07-12 06:42:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:42,329 INFO L93 Difference]: Finished difference Result 1415 states and 2451 transitions. [2022-07-12 06:42:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:42,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 216 [2022-07-12 06:42:42,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:42,334 INFO L225 Difference]: With dead ends: 1415 [2022-07-12 06:42:42,334 INFO L226 Difference]: Without dead ends: 1118 [2022-07-12 06:42:42,337 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 [2022-07-12 06:42:42,344 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 237 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:42,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2415 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-07-12 06:42:42,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1116. [2022-07-12 06:42:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.7390134529147983) internal successors, (1939), 1115 states have internal predecessors, (1939), 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) [2022-07-12 06:42:42,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1939 transitions. [2022-07-12 06:42:42,372 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1939 transitions. Word has length 216 [2022-07-12 06:42:42,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:42,372 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1939 transitions. [2022-07-12 06:42:42,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2022-07-12 06:42:42,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1939 transitions. [2022-07-12 06:42:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-12 06:42:42,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:42,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:42,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:42:42,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:42,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1203576295, now seen corresponding path program 1 times [2022-07-12 06:42:42,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:42,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441857474] [2022-07-12 06:42:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:42,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:42,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:42,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441857474] [2022-07-12 06:42:42,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441857474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:42,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:42,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868178494] [2022-07-12 06:42:42,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:42,488 INFO L87 Difference]: Start difference. First operand 1116 states and 1939 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2022-07-12 06:42:42,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:42,530 INFO L93 Difference]: Finished difference Result 2212 states and 3801 transitions. [2022-07-12 06:42:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:42,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 220 [2022-07-12 06:42:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:42,537 INFO L225 Difference]: With dead ends: 2212 [2022-07-12 06:42:42,537 INFO L226 Difference]: Without dead ends: 1642 [2022-07-12 06:42:42,538 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 [2022-07-12 06:42:42,539 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 229 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:42,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 2416 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-07-12 06:42:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1640. [2022-07-12 06:42:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1639 states have (on average 1.7223917022574742) internal successors, (2823), 1639 states have internal predecessors, (2823), 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) [2022-07-12 06:42:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2823 transitions. [2022-07-12 06:42:42,580 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2823 transitions. Word has length 220 [2022-07-12 06:42:42,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:42,581 INFO L495 AbstractCegarLoop]: Abstraction has 1640 states and 2823 transitions. [2022-07-12 06:42:42,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2022-07-12 06:42:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2823 transitions. [2022-07-12 06:42:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-12 06:42:42,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:42,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:42,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:42:42,586 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1763181181, now seen corresponding path program 1 times [2022-07-12 06:42:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:42,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059518797] [2022-07-12 06:42:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:42,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:42,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059518797] [2022-07-12 06:42:42,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059518797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:42,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:42,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:42,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140462750] [2022-07-12 06:42:42,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:42,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:42,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:42,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:42,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:42,670 INFO L87 Difference]: Start difference. First operand 1640 states and 2823 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2022-07-12 06:42:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:42,725 INFO L93 Difference]: Finished difference Result 3740 states and 6369 transitions. [2022-07-12 06:42:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:42,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 224 [2022-07-12 06:42:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:42,734 INFO L225 Difference]: With dead ends: 3740 [2022-07-12 06:42:42,734 INFO L226 Difference]: Without dead ends: 2646 [2022-07-12 06:42:42,735 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 [2022-07-12 06:42:42,736 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 221 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:42,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2417 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-07-12 06:42:42,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2644. [2022-07-12 06:42:42,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2643 states have (on average 1.7037457434733259) internal successors, (4503), 2643 states have internal predecessors, (4503), 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) [2022-07-12 06:42:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 4503 transitions. [2022-07-12 06:42:42,790 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 4503 transitions. Word has length 224 [2022-07-12 06:42:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:42,791 INFO L495 AbstractCegarLoop]: Abstraction has 2644 states and 4503 transitions. [2022-07-12 06:42:42,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2022-07-12 06:42:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 4503 transitions. [2022-07-12 06:42:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 06:42:42,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:42,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:42,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:42:42,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:42,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:42,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1428296929, now seen corresponding path program 1 times [2022-07-12 06:42:42,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:42,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014921468] [2022-07-12 06:42:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:42,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:42,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:42,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014921468] [2022-07-12 06:42:42,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014921468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:42,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:42,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80398695] [2022-07-12 06:42:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:42,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:42,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:42,867 INFO L87 Difference]: Start difference. First operand 2644 states and 4503 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-07-12 06:42:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:42,959 INFO L93 Difference]: Finished difference Result 6664 states and 11241 transitions. [2022-07-12 06:42:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:42,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 228 [2022-07-12 06:42:42,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:42,972 INFO L225 Difference]: With dead ends: 6664 [2022-07-12 06:42:42,973 INFO L226 Difference]: Without dead ends: 4566 [2022-07-12 06:42:42,977 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 [2022-07-12 06:42:42,978 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 213 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:42,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2418 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2022-07-12 06:42:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4564. [2022-07-12 06:42:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4563 states have (on average 1.6846373000219155) internal successors, (7687), 4563 states have internal predecessors, (7687), 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) [2022-07-12 06:42:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7687 transitions. [2022-07-12 06:42:43,095 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7687 transitions. Word has length 228 [2022-07-12 06:42:43,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:43,095 INFO L495 AbstractCegarLoop]: Abstraction has 4564 states and 7687 transitions. [2022-07-12 06:42:43,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-07-12 06:42:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7687 transitions. [2022-07-12 06:42:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-12 06:42:43,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:43,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:43,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:42:43,100 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:43,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1256580795, now seen corresponding path program 1 times [2022-07-12 06:42:43,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:43,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522421865] [2022-07-12 06:42:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:43,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:43,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:43,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522421865] [2022-07-12 06:42:43,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522421865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:43,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:43,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:42:43,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553820687] [2022-07-12 06:42:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:43,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:42:43,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:42:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:42:43,224 INFO L87 Difference]: Start difference. First operand 4564 states and 7687 transitions. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 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) [2022-07-12 06:42:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:43,874 INFO L93 Difference]: Finished difference Result 27368 states and 46209 transitions. [2022-07-12 06:42:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:42:43,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 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 232 [2022-07-12 06:42:43,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:43,944 INFO L225 Difference]: With dead ends: 27368 [2022-07-12 06:42:43,944 INFO L226 Difference]: Without dead ends: 23350 [2022-07-12 06:42:43,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:42:43,961 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 4454 mSDsluCounter, 7456 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4454 SdHoareTripleChecker+Valid, 8676 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:43,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4454 Valid, 8676 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:42:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23350 states. [2022-07-12 06:42:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23350 to 8423. [2022-07-12 06:42:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8422 states have (on average 1.678104963191641) internal successors, (14133), 8422 states have internal predecessors, (14133), 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) [2022-07-12 06:42:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 14133 transitions. [2022-07-12 06:42:44,480 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 14133 transitions. Word has length 232 [2022-07-12 06:42:44,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:44,481 INFO L495 AbstractCegarLoop]: Abstraction has 8423 states and 14133 transitions. [2022-07-12 06:42:44,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 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) [2022-07-12 06:42:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 14133 transitions. [2022-07-12 06:42:44,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-12 06:42:44,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:44,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:44,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:42:44,494 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1967080448, now seen corresponding path program 1 times [2022-07-12 06:42:44,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:44,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029780347] [2022-07-12 06:42:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:44,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:44,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:44,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029780347] [2022-07-12 06:42:44,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029780347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:44,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:44,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:42:44,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892310974] [2022-07-12 06:42:44,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:44,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:42:44,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:42:44,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:42:44,593 INFO L87 Difference]: Start difference. First operand 8423 states and 14133 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2022-07-12 06:42:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:44,986 INFO L93 Difference]: Finished difference Result 24532 states and 41276 transitions. [2022-07-12 06:42:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:42:44,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 233 [2022-07-12 06:42:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:45,021 INFO L225 Difference]: With dead ends: 24532 [2022-07-12 06:42:45,021 INFO L226 Difference]: Without dead ends: 16655 [2022-07-12 06:42:45,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:42:45,038 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 776 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 3689 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:45,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 3689 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:45,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16655 states. [2022-07-12 06:42:45,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16655 to 12506. [2022-07-12 06:42:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12506 states, 12505 states have (on average 1.6790083966413434) internal successors, (20996), 12505 states have internal predecessors, (20996), 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) [2022-07-12 06:42:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12506 states to 12506 states and 20996 transitions. [2022-07-12 06:42:45,675 INFO L78 Accepts]: Start accepts. Automaton has 12506 states and 20996 transitions. Word has length 233 [2022-07-12 06:42:45,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:45,675 INFO L495 AbstractCegarLoop]: Abstraction has 12506 states and 20996 transitions. [2022-07-12 06:42:45,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2022-07-12 06:42:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 12506 states and 20996 transitions. [2022-07-12 06:42:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-12 06:42:45,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:45,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:45,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:42:45,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash 159533448, now seen corresponding path program 1 times [2022-07-12 06:42:45,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:45,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479585579] [2022-07-12 06:42:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:45,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:45,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:45,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479585579] [2022-07-12 06:42:45,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479585579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:45,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:45,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:45,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586426191] [2022-07-12 06:42:45,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:45,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:45,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:45,765 INFO L87 Difference]: Start difference. First operand 12506 states and 20996 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:46,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:46,159 INFO L93 Difference]: Finished difference Result 25097 states and 42142 transitions. [2022-07-12 06:42:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:46,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2022-07-12 06:42:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:46,248 INFO L225 Difference]: With dead ends: 25097 [2022-07-12 06:42:46,248 INFO L226 Difference]: Without dead ends: 18751 [2022-07-12 06:42:46,256 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 [2022-07-12 06:42:46,256 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 214 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:46,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2477 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18751 states. [2022-07-12 06:42:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18751 to 18749. [2022-07-12 06:42:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18749 states, 18748 states have (on average 1.6717516535097077) internal successors, (31342), 18748 states have internal predecessors, (31342), 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) [2022-07-12 06:42:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18749 states to 18749 states and 31342 transitions. [2022-07-12 06:42:46,870 INFO L78 Accepts]: Start accepts. Automaton has 18749 states and 31342 transitions. Word has length 233 [2022-07-12 06:42:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:46,870 INFO L495 AbstractCegarLoop]: Abstraction has 18749 states and 31342 transitions. [2022-07-12 06:42:46,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 18749 states and 31342 transitions. [2022-07-12 06:42:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-12 06:42:46,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:46,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:46,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:42:46,877 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:46,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2066182408, now seen corresponding path program 1 times [2022-07-12 06:42:46,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:46,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922228206] [2022-07-12 06:42:46,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:46,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:46,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:46,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922228206] [2022-07-12 06:42:46,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922228206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:46,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:46,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:46,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440228832] [2022-07-12 06:42:46,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:46,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:46,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:46,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:46,985 INFO L87 Difference]: Start difference. First operand 18749 states and 31342 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:47,494 INFO L93 Difference]: Finished difference Result 35049 states and 58656 transitions. [2022-07-12 06:42:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:47,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2022-07-12 06:42:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:47,547 INFO L225 Difference]: With dead ends: 35049 [2022-07-12 06:42:47,547 INFO L226 Difference]: Without dead ends: 25707 [2022-07-12 06:42:47,559 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 [2022-07-12 06:42:47,560 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 222 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:47,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 2522 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25707 states. [2022-07-12 06:42:48,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25707 to 25705. [2022-07-12 06:42:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25705 states, 25704 states have (on average 1.6654217242452536) internal successors, (42808), 25704 states have internal predecessors, (42808), 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) [2022-07-12 06:42:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25705 states to 25705 states and 42808 transitions. [2022-07-12 06:42:48,245 INFO L78 Accepts]: Start accepts. Automaton has 25705 states and 42808 transitions. Word has length 233 [2022-07-12 06:42:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:48,245 INFO L495 AbstractCegarLoop]: Abstraction has 25705 states and 42808 transitions. [2022-07-12 06:42:48,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 25705 states and 42808 transitions. [2022-07-12 06:42:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-12 06:42:48,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:48,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:48,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:42:48,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:48,252 INFO L85 PathProgramCache]: Analyzing trace with hash 116201608, now seen corresponding path program 1 times [2022-07-12 06:42:48,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:48,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263219470] [2022-07-12 06:42:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:48,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:48,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263219470] [2022-07-12 06:42:48,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263219470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:48,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:48,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:48,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044209690] [2022-07-12 06:42:48,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:48,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:48,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:48,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:48,329 INFO L87 Difference]: Start difference. First operand 25705 states and 42808 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:49,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:49,072 INFO L93 Difference]: Finished difference Result 48749 states and 81330 transitions. [2022-07-12 06:42:49,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:49,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2022-07-12 06:42:49,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:49,138 INFO L225 Difference]: With dead ends: 48749 [2022-07-12 06:42:49,139 INFO L226 Difference]: Without dead ends: 35549 [2022-07-12 06:42:49,157 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 [2022-07-12 06:42:49,159 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 230 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:49,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2567 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35549 states. [2022-07-12 06:42:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35549 to 35547. [2022-07-12 06:42:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35547 states, 35546 states have (on average 1.6612277049457043) internal successors, (59050), 35546 states have internal predecessors, (59050), 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) [2022-07-12 06:42:50,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35547 states to 35547 states and 59050 transitions. [2022-07-12 06:42:50,113 INFO L78 Accepts]: Start accepts. Automaton has 35547 states and 59050 transitions. Word has length 233 [2022-07-12 06:42:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:50,113 INFO L495 AbstractCegarLoop]: Abstraction has 35547 states and 59050 transitions. [2022-07-12 06:42:50,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 35547 states and 59050 transitions. [2022-07-12 06:42:50,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-12 06:42:50,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:50,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:50,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:42:50,117 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:50,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1001177080, now seen corresponding path program 1 times [2022-07-12 06:42:50,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:50,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754173650] [2022-07-12 06:42:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:50,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:50,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:50,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754173650] [2022-07-12 06:42:50,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754173650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:50,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:50,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:50,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986142362] [2022-07-12 06:42:50,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:50,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:50,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:50,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:50,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:50,185 INFO L87 Difference]: Start difference. First operand 35547 states and 59050 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:51,044 INFO L93 Difference]: Finished difference Result 68005 states and 113160 transitions. [2022-07-12 06:42:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:51,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2022-07-12 06:42:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:51,187 INFO L225 Difference]: With dead ends: 68005 [2022-07-12 06:42:51,188 INFO L226 Difference]: Without dead ends: 49501 [2022-07-12 06:42:51,232 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 [2022-07-12 06:42:51,233 INFO L413 NwaCegarLoop]: 1412 mSDtfsCounter, 238 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:51,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 2612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49501 states. [2022-07-12 06:42:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49501 to 49499. [2022-07-12 06:42:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49499 states, 49498 states have (on average 1.6563901571780677) internal successors, (81988), 49498 states have internal predecessors, (81988), 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) [2022-07-12 06:42:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49499 states to 49499 states and 81988 transitions. [2022-07-12 06:42:52,739 INFO L78 Accepts]: Start accepts. Automaton has 49499 states and 81988 transitions. Word has length 233 [2022-07-12 06:42:52,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:52,739 INFO L495 AbstractCegarLoop]: Abstraction has 49499 states and 81988 transitions. [2022-07-12 06:42:52,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 49499 states and 81988 transitions. [2022-07-12 06:42:52,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-12 06:42:52,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:52,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:52,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:42:52,743 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1255794568, now seen corresponding path program 1 times [2022-07-12 06:42:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:52,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251330421] [2022-07-12 06:42:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:52,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:52,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251330421] [2022-07-12 06:42:52,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251330421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:52,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:52,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:42:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240543436] [2022-07-12 06:42:52,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:52,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:42:52,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:42:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:42:52,815 INFO L87 Difference]: Start difference. First operand 49499 states and 81988 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:42:54,572 INFO L93 Difference]: Finished difference Result 109735 states and 182548 transitions. [2022-07-12 06:42:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:42:54,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2022-07-12 06:42:54,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:42:54,716 INFO L225 Difference]: With dead ends: 109735 [2022-07-12 06:42:54,716 INFO L226 Difference]: Without dead ends: 75497 [2022-07-12 06:42:54,751 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 [2022-07-12 06:42:54,752 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 246 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:42:54,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2648 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:42:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75497 states. [2022-07-12 06:42:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75497 to 75495. [2022-07-12 06:42:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75495 states, 75494 states have (on average 1.6524889395183724) internal successors, (124753), 75494 states have internal predecessors, (124753), 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) [2022-07-12 06:42:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75495 states to 75495 states and 124753 transitions. [2022-07-12 06:42:56,783 INFO L78 Accepts]: Start accepts. Automaton has 75495 states and 124753 transitions. Word has length 233 [2022-07-12 06:42:56,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:56,784 INFO L495 AbstractCegarLoop]: Abstraction has 75495 states and 124753 transitions. [2022-07-12 06:42:56,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-07-12 06:42:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 75495 states and 124753 transitions. [2022-07-12 06:42:56,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-12 06:42:56,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:56,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:56,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:42:56,787 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:56,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:56,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1347640466, now seen corresponding path program 1 times [2022-07-12 06:42:56,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:56,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933501717] [2022-07-12 06:42:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:56,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:42:56,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:56,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933501717] [2022-07-12 06:42:56,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933501717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:56,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:56,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:42:56,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482132549] [2022-07-12 06:42:56,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:56,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:42:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:42:56,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:42:56,879 INFO L87 Difference]: Start difference. First operand 75495 states and 124753 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2022-07-12 06:43:00,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:00,569 INFO L93 Difference]: Finished difference Result 248936 states and 411966 transitions. [2022-07-12 06:43:00,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:43:00,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 234 [2022-07-12 06:43:00,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:00,918 INFO L225 Difference]: With dead ends: 248936 [2022-07-12 06:43:00,918 INFO L226 Difference]: Without dead ends: 174053 [2022-07-12 06:43:01,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:43:01,024 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 774 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 3737 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:01,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 3737 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174053 states. [2022-07-12 06:43:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174053 to 124505. [2022-07-12 06:43:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124505 states, 124504 states have (on average 1.6479711495213005) internal successors, (205179), 124504 states have internal predecessors, (205179), 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) [2022-07-12 06:43:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124505 states to 124505 states and 205179 transitions. [2022-07-12 06:43:05,710 INFO L78 Accepts]: Start accepts. Automaton has 124505 states and 205179 transitions. Word has length 234 [2022-07-12 06:43:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:05,710 INFO L495 AbstractCegarLoop]: Abstraction has 124505 states and 205179 transitions. [2022-07-12 06:43:05,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2022-07-12 06:43:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 124505 states and 205179 transitions. [2022-07-12 06:43:05,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-12 06:43:05,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:05,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:43:05,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:43:05,721 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:05,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1193778039, now seen corresponding path program 1 times [2022-07-12 06:43:05,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:05,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415130890] [2022-07-12 06:43:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:05,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:05,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:05,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415130890] [2022-07-12 06:43:05,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415130890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:05,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:05,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:43:05,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369790965] [2022-07-12 06:43:05,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:05,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:43:05,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:05,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:43:05,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:43:05,793 INFO L87 Difference]: Start difference. First operand 124505 states and 205179 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2022-07-12 06:43:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:12,725 INFO L93 Difference]: Finished difference Result 410480 states and 677550 transitions. [2022-07-12 06:43:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:43:12,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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 [2022-07-12 06:43:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:13,250 INFO L225 Difference]: With dead ends: 410480 [2022-07-12 06:43:13,250 INFO L226 Difference]: Without dead ends: 286587 [2022-07-12 06:43:13,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:43:13,358 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 772 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 3785 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:13,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 3785 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286587 states.