./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b4e579e156345915e1fde26fcd53bce80a36e2067cd5c9341971cdf8691491e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:36:35,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:36:35,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:36:35,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:36:35,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:36:35,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:36:35,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:36:35,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:36:35,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:36:35,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:36:35,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:36:35,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:36:35,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:36:35,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:36:35,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:36:35,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:36:35,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:36:35,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:36:35,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:36:35,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:36:35,595 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:36:35,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:36:35,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:36:35,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:36:35,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:36:35,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:36:35,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:36:35,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:36:35,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:36:35,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:36:35,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:36:35,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:36:35,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:36:35,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:36:35,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:36:35,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:36:35,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:36:35,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:36:35,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:36:35,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:36:35,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:36:35,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:36:35,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:36:35,648 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:36:35,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:36:35,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:36:35,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:36:35,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:36:35,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:36:35,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:36:35,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:36:35,651 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:36:35,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:36:35,652 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:36:35,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:36:35,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:36:35,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:36:35,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:36:35,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:36:35,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:36:35,653 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:36:35,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:36:35,654 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:36:35,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:36:35,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:36:35,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:36:35,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:36:35,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:36:35,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:36:35,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:36:35,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:36:35,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:36:35,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:36:35,657 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:36:35,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:36:35,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:36:35,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4e579e156345915e1fde26fcd53bce80a36e2067cd5c9341971cdf8691491e [2022-07-13 18:36:35,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:36:35,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:36:35,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:36:35,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:36:35,892 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:36:35,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-07-13 18:36:35,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe371de6/96f17ba23bc4410ca588bb87781986c5/FLAG5f6616cf6 [2022-07-13 18:36:36,470 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:36:36,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-07-13 18:36:36,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe371de6/96f17ba23bc4410ca588bb87781986c5/FLAG5f6616cf6 [2022-07-13 18:36:36,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe371de6/96f17ba23bc4410ca588bb87781986c5 [2022-07-13 18:36:36,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:36:36,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:36:36,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:36:36,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:36:36,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:36:36,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:36:36" (1/1) ... [2022-07-13 18:36:36,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bdb6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:36, skipping insertion in model container [2022-07-13 18:36:36,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:36:36" (1/1) ... [2022-07-13 18:36:36,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:36:36,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:36:37,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12498,12511] [2022-07-13 18:36:37,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:36:37,370 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:36:37,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12498,12511] [2022-07-13 18:36:37,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:36:37,513 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:36:37,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37 WrapperNode [2022-07-13 18:36:37,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:36:37,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:36:37,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:36:37,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:36:37,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,589 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1256 [2022-07-13 18:36:37,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:36:37,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:36:37,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:36:37,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:36:37,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:36:37,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:36:37,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:36:37,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:36:37,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (1/1) ... [2022-07-13 18:36:37,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:36:37,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:36:37,664 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) [2022-07-13 18:36:37,681 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 [2022-07-13 18:36:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:36:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:36:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:36:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:36:37,854 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:36:37,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:36:38,658 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:36:38,675 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:36:38,675 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:36:38,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:36:38 BoogieIcfgContainer [2022-07-13 18:36:38,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:36:38,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:36:38,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:36:38,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:36:38,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:36:36" (1/3) ... [2022-07-13 18:36:38,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c70076a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:36:38, skipping insertion in model container [2022-07-13 18:36:38,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:36:37" (2/3) ... [2022-07-13 18:36:38,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c70076a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:36:38, skipping insertion in model container [2022-07-13 18:36:38,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:36:38" (3/3) ... [2022-07-13 18:36:38,689 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-07-13 18:36:38,702 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:36:38,703 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:36:38,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:36:38,777 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@38a8d649, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cf429b9 [2022-07-13 18:36:38,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:36:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 305 states have (on average 1.79672131147541) internal successors, (548), 306 states have internal predecessors, (548), 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) [2022-07-13 18:36:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 18:36:38,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:38,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:36:38,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:38,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:38,816 INFO L85 PathProgramCache]: Analyzing trace with hash 103029560, now seen corresponding path program 1 times [2022-07-13 18:36:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:38,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652469358] [2022-07-13 18:36:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:38,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:39,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:39,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652469358] [2022-07-13 18:36:39,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652469358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:39,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:39,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:36:39,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581890022] [2022-07-13 18:36:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:39,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:36:39,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:36:39,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:36:39,292 INFO L87 Difference]: Start difference. First operand has 307 states, 305 states have (on average 1.79672131147541) internal successors, (548), 306 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:36:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:39,418 INFO L93 Difference]: Finished difference Result 556 states and 967 transitions. [2022-07-13 18:36:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:36:39,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-07-13 18:36:39,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:39,434 INFO L225 Difference]: With dead ends: 556 [2022-07-13 18:36:39,434 INFO L226 Difference]: Without dead ends: 420 [2022-07-13 18:36:39,438 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 [2022-07-13 18:36:39,441 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 210 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:36:39,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1038 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:39,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-07-13 18:36:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 418. [2022-07-13 18:36:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.683453237410072) internal successors, (702), 417 states have internal predecessors, (702), 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) [2022-07-13 18:36:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 702 transitions. [2022-07-13 18:36:39,530 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 702 transitions. Word has length 99 [2022-07-13 18:36:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:39,530 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 702 transitions. [2022-07-13 18:36:39,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:36:39,531 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 702 transitions. [2022-07-13 18:36:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 18:36:39,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:39,535 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] [2022-07-13 18:36:39,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:36:39,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:39,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1521112466, now seen corresponding path program 1 times [2022-07-13 18:36:39,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:39,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266677799] [2022-07-13 18:36:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:39,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:39,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266677799] [2022-07-13 18:36:39,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266677799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:39,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:39,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:36:39,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470328801] [2022-07-13 18:36:39,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:39,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:36:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:39,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:36:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:36:39,658 INFO L87 Difference]: Start difference. First operand 418 states and 702 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2022-07-13 18:36:39,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:39,698 INFO L93 Difference]: Finished difference Result 882 states and 1478 transitions. [2022-07-13 18:36:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:36:39,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-07-13 18:36:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:39,703 INFO L225 Difference]: With dead ends: 882 [2022-07-13 18:36:39,703 INFO L226 Difference]: Without dead ends: 641 [2022-07-13 18:36:39,704 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 [2022-07-13 18:36:39,705 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 189 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 997 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 [2022-07-13 18:36:39,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 997 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-07-13 18:36:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 639. [2022-07-13 18:36:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 1.677115987460815) internal successors, (1070), 638 states have internal predecessors, (1070), 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) [2022-07-13 18:36:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1070 transitions. [2022-07-13 18:36:39,753 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1070 transitions. Word has length 102 [2022-07-13 18:36:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:39,754 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 1070 transitions. [2022-07-13 18:36:39,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2022-07-13 18:36:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1070 transitions. [2022-07-13 18:36:39,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:36:39,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:39,765 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] [2022-07-13 18:36:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:36:39,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:39,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2035930850, now seen corresponding path program 1 times [2022-07-13 18:36:39,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:39,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249617634] [2022-07-13 18:36:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:39,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:39,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:39,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249617634] [2022-07-13 18:36:39,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249617634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:39,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:39,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:36:39,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896317846] [2022-07-13 18:36:39,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:39,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:36:39,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:39,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:36:39,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:36:39,910 INFO L87 Difference]: Start difference. First operand 639 states and 1070 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:36:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:39,954 INFO L93 Difference]: Finished difference Result 1527 states and 2548 transitions. [2022-07-13 18:36:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:36:39,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-07-13 18:36:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:39,962 INFO L225 Difference]: With dead ends: 1527 [2022-07-13 18:36:39,962 INFO L226 Difference]: Without dead ends: 1065 [2022-07-13 18:36:39,967 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 [2022-07-13 18:36:39,973 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 183 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1077 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 [2022-07-13 18:36:39,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1077 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-07-13 18:36:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1063. [2022-07-13 18:36:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 1.6666666666666667) internal successors, (1770), 1062 states have internal predecessors, (1770), 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) [2022-07-13 18:36:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1770 transitions. [2022-07-13 18:36:40,029 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1770 transitions. Word has length 105 [2022-07-13 18:36:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:40,031 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1770 transitions. [2022-07-13 18:36:40,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:36:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1770 transitions. [2022-07-13 18:36:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 18:36:40,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:40,034 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] [2022-07-13 18:36:40,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:36:40,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:40,036 INFO L85 PathProgramCache]: Analyzing trace with hash 467943166, now seen corresponding path program 1 times [2022-07-13 18:36:40,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:40,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51692070] [2022-07-13 18:36:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:40,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:40,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:40,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51692070] [2022-07-13 18:36:40,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51692070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:40,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:40,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:36:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972112846] [2022-07-13 18:36:40,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:40,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:36:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:36:40,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:36:40,124 INFO L87 Difference]: Start difference. First operand 1063 states and 1770 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-13 18:36:40,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:40,197 INFO L93 Difference]: Finished difference Result 1969 states and 3284 transitions. [2022-07-13 18:36:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:36:40,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-07-13 18:36:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:40,204 INFO L225 Difference]: With dead ends: 1969 [2022-07-13 18:36:40,204 INFO L226 Difference]: Without dead ends: 1507 [2022-07-13 18:36:40,206 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 [2022-07-13 18:36:40,214 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 184 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1069 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 [2022-07-13 18:36:40,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1069 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2022-07-13 18:36:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1505. [2022-07-13 18:36:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.663563829787234) internal successors, (2502), 1504 states have internal predecessors, (2502), 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) [2022-07-13 18:36:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2502 transitions. [2022-07-13 18:36:40,287 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2502 transitions. Word has length 108 [2022-07-13 18:36:40,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:40,287 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2502 transitions. [2022-07-13 18:36:40,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-13 18:36:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2502 transitions. [2022-07-13 18:36:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 18:36:40,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:40,290 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] [2022-07-13 18:36:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:36:40,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:40,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash -315451476, now seen corresponding path program 1 times [2022-07-13 18:36:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:40,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146757197] [2022-07-13 18:36:40,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:40,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:40,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:40,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146757197] [2022-07-13 18:36:40,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146757197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:40,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:40,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:36:40,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501221422] [2022-07-13 18:36:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:40,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:36:40,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:40,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:36:40,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:36:40,362 INFO L87 Difference]: Start difference. First operand 1505 states and 2502 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-13 18:36:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:40,476 INFO L93 Difference]: Finished difference Result 3881 states and 6428 transitions. [2022-07-13 18:36:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:36:40,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-07-13 18:36:40,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:40,489 INFO L225 Difference]: With dead ends: 3881 [2022-07-13 18:36:40,489 INFO L226 Difference]: Without dead ends: 2639 [2022-07-13 18:36:40,493 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 [2022-07-13 18:36:40,493 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 177 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1051 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 [2022-07-13 18:36:40,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1051 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:40,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-07-13 18:36:40,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2637. [2022-07-13 18:36:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2636 states have (on average 1.650227617602428) internal successors, (4350), 2636 states have internal predecessors, (4350), 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) [2022-07-13 18:36:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 4350 transitions. [2022-07-13 18:36:40,652 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 4350 transitions. Word has length 108 [2022-07-13 18:36:40,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:40,653 INFO L495 AbstractCegarLoop]: Abstraction has 2637 states and 4350 transitions. [2022-07-13 18:36:40,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-13 18:36:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 4350 transitions. [2022-07-13 18:36:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 18:36:40,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:40,658 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] [2022-07-13 18:36:40,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:36:40,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:40,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 933596114, now seen corresponding path program 1 times [2022-07-13 18:36:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:40,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542595320] [2022-07-13 18:36:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:40,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:40,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542595320] [2022-07-13 18:36:40,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542595320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:40,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:40,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:36:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996397033] [2022-07-13 18:36:40,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:40,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:36:40,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:36:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:36:40,750 INFO L87 Difference]: Start difference. First operand 2637 states and 4350 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2022-07-13 18:36:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:40,937 INFO L93 Difference]: Finished difference Result 4881 states and 8064 transitions. [2022-07-13 18:36:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:36:40,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2022-07-13 18:36:40,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:40,953 INFO L225 Difference]: With dead ends: 4881 [2022-07-13 18:36:40,954 INFO L226 Difference]: Without dead ends: 3639 [2022-07-13 18:36:40,957 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 [2022-07-13 18:36:40,958 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 178 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1042 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 [2022-07-13 18:36:40,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1042 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:40,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2022-07-13 18:36:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3637. [2022-07-13 18:36:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3637 states, 3636 states have (on average 1.6452145214521452) internal successors, (5982), 3636 states have internal predecessors, (5982), 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) [2022-07-13 18:36:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 5982 transitions. [2022-07-13 18:36:41,150 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 5982 transitions. Word has length 111 [2022-07-13 18:36:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:41,150 INFO L495 AbstractCegarLoop]: Abstraction has 3637 states and 5982 transitions. [2022-07-13 18:36:41,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2022-07-13 18:36:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 5982 transitions. [2022-07-13 18:36:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 18:36:41,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:41,152 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] [2022-07-13 18:36:41,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:36:41,153 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1374875396, now seen corresponding path program 1 times [2022-07-13 18:36:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:41,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090016918] [2022-07-13 18:36:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:41,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:41,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:41,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090016918] [2022-07-13 18:36:41,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090016918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:41,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:41,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:36:41,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219405563] [2022-07-13 18:36:41,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:41,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:36:41,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:41,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:36:41,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:36:41,241 INFO L87 Difference]: Start difference. First operand 3637 states and 5982 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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) [2022-07-13 18:36:42,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:42,338 INFO L93 Difference]: Finished difference Result 20391 states and 33849 transitions. [2022-07-13 18:36:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:36:42,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 111 [2022-07-13 18:36:42,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:42,418 INFO L225 Difference]: With dead ends: 20391 [2022-07-13 18:36:42,418 INFO L226 Difference]: Without dead ends: 17089 [2022-07-13 18:36:42,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:36:42,431 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1812 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:36:42,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 4435 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:36:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17089 states. [2022-07-13 18:36:43,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17089 to 6868. [2022-07-13 18:36:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6868 states, 6867 states have (on average 1.6419105868647152) internal successors, (11275), 6867 states have internal predecessors, (11275), 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) [2022-07-13 18:36:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6868 states to 6868 states and 11275 transitions. [2022-07-13 18:36:43,101 INFO L78 Accepts]: Start accepts. Automaton has 6868 states and 11275 transitions. Word has length 111 [2022-07-13 18:36:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:43,102 INFO L495 AbstractCegarLoop]: Abstraction has 6868 states and 11275 transitions. [2022-07-13 18:36:43,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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) [2022-07-13 18:36:43,103 INFO L276 IsEmpty]: Start isEmpty. Operand 6868 states and 11275 transitions. [2022-07-13 18:36:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 18:36:43,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:43,105 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] [2022-07-13 18:36:43,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:36:43,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:43,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:43,106 INFO L85 PathProgramCache]: Analyzing trace with hash -395597751, now seen corresponding path program 1 times [2022-07-13 18:36:43,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:43,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407033875] [2022-07-13 18:36:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:43,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:43,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:43,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407033875] [2022-07-13 18:36:43,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407033875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:43,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:43,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:36:43,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534660155] [2022-07-13 18:36:43,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:36:43,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:36:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:36:43,185 INFO L87 Difference]: Start difference. First operand 6868 states and 11275 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2022-07-13 18:36:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:44,124 INFO L93 Difference]: Finished difference Result 20225 states and 33450 transitions. [2022-07-13 18:36:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:36:44,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 112 [2022-07-13 18:36:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:44,154 INFO L225 Difference]: With dead ends: 20225 [2022-07-13 18:36:44,154 INFO L226 Difference]: Without dead ends: 13778 [2022-07-13 18:36:44,166 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 [2022-07-13 18:36:44,166 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 624 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:36:44,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1721 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13778 states. [2022-07-13 18:36:44,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13778 to 10319. [2022-07-13 18:36:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10319 states, 10318 states have (on average 1.6449893390191899) internal successors, (16973), 10318 states have internal predecessors, (16973), 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) [2022-07-13 18:36:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10319 states to 10319 states and 16973 transitions. [2022-07-13 18:36:44,935 INFO L78 Accepts]: Start accepts. Automaton has 10319 states and 16973 transitions. Word has length 112 [2022-07-13 18:36:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:44,935 INFO L495 AbstractCegarLoop]: Abstraction has 10319 states and 16973 transitions. [2022-07-13 18:36:44,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2022-07-13 18:36:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 10319 states and 16973 transitions. [2022-07-13 18:36:44,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 18:36:44,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:44,938 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] [2022-07-13 18:36:44,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:36:44,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:44,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:44,940 INFO L85 PathProgramCache]: Analyzing trace with hash 454247534, now seen corresponding path program 1 times [2022-07-13 18:36:44,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:44,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596327296] [2022-07-13 18:36:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:44,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:44,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:44,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596327296] [2022-07-13 18:36:44,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596327296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:44,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:44,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:36:44,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220093997] [2022-07-13 18:36:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:44,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:36:44,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:36:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:36:44,993 INFO L87 Difference]: Start difference. First operand 10319 states and 16973 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2022-07-13 18:36:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:45,843 INFO L93 Difference]: Finished difference Result 19395 states and 32023 transitions. [2022-07-13 18:36:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:36:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2022-07-13 18:36:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:45,875 INFO L225 Difference]: With dead ends: 19395 [2022-07-13 18:36:45,875 INFO L226 Difference]: Without dead ends: 14003 [2022-07-13 18:36:45,889 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 [2022-07-13 18:36:45,890 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 190 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1113 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 [2022-07-13 18:36:45,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1113 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14003 states. [2022-07-13 18:36:46,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14003 to 14001. [2022-07-13 18:36:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14001 states, 14000 states have (on average 1.6437857142857142) internal successors, (23013), 14000 states have internal predecessors, (23013), 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) [2022-07-13 18:36:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14001 states to 14001 states and 23013 transitions. [2022-07-13 18:36:46,741 INFO L78 Accepts]: Start accepts. Automaton has 14001 states and 23013 transitions. Word has length 112 [2022-07-13 18:36:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:46,741 INFO L495 AbstractCegarLoop]: Abstraction has 14001 states and 23013 transitions. [2022-07-13 18:36:46,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2022-07-13 18:36:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 14001 states and 23013 transitions. [2022-07-13 18:36:46,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 18:36:46,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:46,744 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] [2022-07-13 18:36:46,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:36:46,744 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:46,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1896648670, now seen corresponding path program 1 times [2022-07-13 18:36:46,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:46,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193045364] [2022-07-13 18:36:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:46,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:46,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193045364] [2022-07-13 18:36:46,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193045364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:46,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:46,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:36:46,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439923264] [2022-07-13 18:36:46,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:46,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:36:46,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:36:46,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:36:46,797 INFO L87 Difference]: Start difference. First operand 14001 states and 23013 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2022-07-13 18:36:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:48,019 INFO L93 Difference]: Finished difference Result 30414 states and 50389 transitions. [2022-07-13 18:36:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:36:48,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2022-07-13 18:36:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:48,061 INFO L225 Difference]: With dead ends: 30414 [2022-07-13 18:36:48,061 INFO L226 Difference]: Without dead ends: 20721 [2022-07-13 18:36:48,083 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 [2022-07-13 18:36:48,084 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 196 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1148 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 [2022-07-13 18:36:48,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1148 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20721 states. [2022-07-13 18:36:49,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20721 to 20719. [2022-07-13 18:36:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20719 states, 20718 states have (on average 1.6462496379959455) internal successors, (34107), 20718 states have internal predecessors, (34107), 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) [2022-07-13 18:36:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20719 states to 20719 states and 34107 transitions. [2022-07-13 18:36:49,364 INFO L78 Accepts]: Start accepts. Automaton has 20719 states and 34107 transitions. Word has length 112 [2022-07-13 18:36:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:49,365 INFO L495 AbstractCegarLoop]: Abstraction has 20719 states and 34107 transitions. [2022-07-13 18:36:49,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2022-07-13 18:36:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 20719 states and 34107 transitions. [2022-07-13 18:36:49,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 18:36:49,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:49,366 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] [2022-07-13 18:36:49,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:36:49,367 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:49,367 INFO L85 PathProgramCache]: Analyzing trace with hash 558867563, now seen corresponding path program 1 times [2022-07-13 18:36:49,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:49,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41041736] [2022-07-13 18:36:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:49,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:49,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:49,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41041736] [2022-07-13 18:36:49,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41041736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:49,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:49,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:36:49,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492142365] [2022-07-13 18:36:49,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:49,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:36:49,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:49,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:36:49,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:36:49,427 INFO L87 Difference]: Start difference. First operand 20719 states and 34107 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-07-13 18:36:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:52,256 INFO L93 Difference]: Finished difference Result 67417 states and 111246 transitions. [2022-07-13 18:36:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:36:52,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 113 [2022-07-13 18:36:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:52,332 INFO L225 Difference]: With dead ends: 67417 [2022-07-13 18:36:52,332 INFO L226 Difference]: Without dead ends: 46931 [2022-07-13 18:36:52,367 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 [2022-07-13 18:36:52,368 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 622 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1575 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 [2022-07-13 18:36:52,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1575 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:52,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46931 states. [2022-07-13 18:36:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46931 to 33736. [2022-07-13 18:36:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33736 states, 33735 states have (on average 1.6415295686971987) internal successors, (55377), 33735 states have internal predecessors, (55377), 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) [2022-07-13 18:36:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33736 states to 33736 states and 55377 transitions. [2022-07-13 18:36:54,844 INFO L78 Accepts]: Start accepts. Automaton has 33736 states and 55377 transitions. Word has length 113 [2022-07-13 18:36:54,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:54,844 INFO L495 AbstractCegarLoop]: Abstraction has 33736 states and 55377 transitions. [2022-07-13 18:36:54,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-07-13 18:36:54,845 INFO L276 IsEmpty]: Start isEmpty. Operand 33736 states and 55377 transitions. [2022-07-13 18:36:54,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 18:36:54,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:54,846 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] [2022-07-13 18:36:54,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:36:54,846 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:54,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:54,847 INFO L85 PathProgramCache]: Analyzing trace with hash 87079248, now seen corresponding path program 1 times [2022-07-13 18:36:54,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:54,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004641543] [2022-07-13 18:36:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:54,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:36:54,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:54,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004641543] [2022-07-13 18:36:54,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004641543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:54,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:54,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:36:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740042391] [2022-07-13 18:36:54,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:54,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:36:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:36:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:36:54,913 INFO L87 Difference]: Start difference. First operand 33736 states and 55377 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2022-07-13 18:37:00,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:37:00,072 INFO L93 Difference]: Finished difference Result 109311 states and 179862 transitions. [2022-07-13 18:37:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:37:00,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 114 [2022-07-13 18:37:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:37:00,222 INFO L225 Difference]: With dead ends: 109311 [2022-07-13 18:37:00,222 INFO L226 Difference]: Without dead ends: 75808 [2022-07-13 18:37:00,268 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 [2022-07-13 18:37:00,269 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 620 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1622 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 [2022-07-13 18:37:00,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1622 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:37:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75808 states. [2022-07-13 18:37:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75808 to 54629. [2022-07-13 18:37:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54629 states, 54628 states have (on average 1.6367979790583584) internal successors, (89415), 54628 states have internal predecessors, (89415), 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) [2022-07-13 18:37:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54629 states to 54629 states and 89415 transitions. [2022-07-13 18:37:04,592 INFO L78 Accepts]: Start accepts. Automaton has 54629 states and 89415 transitions. Word has length 114 [2022-07-13 18:37:04,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:37:04,593 INFO L495 AbstractCegarLoop]: Abstraction has 54629 states and 89415 transitions. [2022-07-13 18:37:04,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2022-07-13 18:37:04,593 INFO L276 IsEmpty]: Start isEmpty. Operand 54629 states and 89415 transitions. [2022-07-13 18:37:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 18:37:04,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:37:04,594 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] [2022-07-13 18:37:04,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:37:04,594 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:37:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:37:04,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1648898606, now seen corresponding path program 1 times [2022-07-13 18:37:04,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:37:04,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463680413] [2022-07-13 18:37:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:37:04,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:37:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:37:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:37:04,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:37:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463680413] [2022-07-13 18:37:04,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463680413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:37:04,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:37:04,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:37:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322898038] [2022-07-13 18:37:04,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:37:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:37:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:37:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:37:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:37:04,651 INFO L87 Difference]: Start difference. First operand 54629 states and 89415 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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)