./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.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 96fefa83b30613ea39cc46bf8d68e79f92b274b671b8c94e773ac8e262712116 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:55:02,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:55:02,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:55:02,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:55:02,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:55:02,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:55:02,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:55:02,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:55:02,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:55:02,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:55:02,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:55:02,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:55:02,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:55:02,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:55:02,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:55:02,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:55:02,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:55:02,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:55:02,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:55:02,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:55:02,632 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:55:02,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:55:02,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:55:02,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:55:02,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:55:02,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:55:02,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:55:02,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:55:02,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:55:02,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:55:02,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:55:02,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:55:02,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:55:02,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:55:02,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:55:02,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:55:02,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:55:02,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:55:02,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:55:02,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:55:02,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:55:02,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:55:02,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:55:02,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:55:02,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:55:02,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:55:02,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:55:02,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:55:02,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:55:02,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:55:02,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:55:02,678 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:55:02,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:55:02,679 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:55:02,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:55:02,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:55:02,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:55:02,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:55:02,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:55:02,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:55:02,680 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:55:02,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:55:02,681 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:55:02,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:55:02,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:55:02,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:55:02,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:55:02,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:55:02,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:55:02,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:55:02,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:55:02,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:55:02,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:55:02,684 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:55:02,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:55:02,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:55:02,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96fefa83b30613ea39cc46bf8d68e79f92b274b671b8c94e773ac8e262712116 [2022-07-12 06:55:02,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:55:02,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:55:02,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:55:02,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:55:02,909 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:55:02,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-07-12 06:55:02,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2448ad62e/0d05a3a651ad4dcc9ecddfec2a7b13f5/FLAG0db779038 [2022-07-12 06:55:03,312 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:55:03,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-07-12 06:55:03,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2448ad62e/0d05a3a651ad4dcc9ecddfec2a7b13f5/FLAG0db779038 [2022-07-12 06:55:03,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2448ad62e/0d05a3a651ad4dcc9ecddfec2a7b13f5 [2022-07-12 06:55:03,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:55:03,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:55:03,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:55:03,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:55:03,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:55:03,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6486e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03, skipping insertion in model container [2022-07-12 06:55:03,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:55:03,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:55:03,606 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.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2022-07-12 06:55:03,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:55:03,652 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:55:03,684 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.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2022-07-12 06:55:03,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:55:03,731 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:55:03,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03 WrapperNode [2022-07-12 06:55:03,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:55:03,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:55:03,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:55:03,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:55:03,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,799 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 588 [2022-07-12 06:55:03,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:55:03,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:55:03,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:55:03,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:55:03,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:55:03,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:55:03,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:55:03,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:55:03,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (1/1) ... [2022-07-12 06:55:03,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:55:03,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:55:03,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:55:03,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:55:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:55:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:55:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:55:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:55:04,008 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:55:04,009 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:55:04,533 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:55:04,539 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:55:04,539 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 06:55:04,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:55:04 BoogieIcfgContainer [2022-07-12 06:55:04,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:55:04,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:55:04,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:55:04,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:55:04,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:55:03" (1/3) ... [2022-07-12 06:55:04,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f003caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:55:04, skipping insertion in model container [2022-07-12 06:55:04,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:55:03" (2/3) ... [2022-07-12 06:55:04,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f003caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:55:04, skipping insertion in model container [2022-07-12 06:55:04,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:55:04" (3/3) ... [2022-07-12 06:55:04,553 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-07-12 06:55:04,562 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:55:04,563 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:55:04,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:55:04,600 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@68dc1613, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f70def9 [2022-07-12 06:55:04,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:55:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:04,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 06:55:04,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:04,611 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] [2022-07-12 06:55:04,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1933157835, now seen corresponding path program 1 times [2022-07-12 06:55:04,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:04,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317996093] [2022-07-12 06:55:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:04,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:04,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:04,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317996093] [2022-07-12 06:55:04,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317996093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:04,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:04,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:55:04,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315724941] [2022-07-12 06:55:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:04,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:55:04,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:04,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:55:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:04,959 INFO L87 Difference]: Start difference. First operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 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 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:05,070 INFO L93 Difference]: Finished difference Result 288 states and 491 transitions. [2022-07-12 06:55:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:55:05,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-07-12 06:55:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:05,082 INFO L225 Difference]: With dead ends: 288 [2022-07-12 06:55:05,085 INFO L226 Difference]: Without dead ends: 201 [2022-07-12 06:55:05,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:05,094 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 131 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 412 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 [2022-07-12 06:55:05,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 412 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-12 06:55:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2022-07-12 06:55:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.5808080808080809) internal successors, (313), 198 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 313 transitions. [2022-07-12 06:55:05,160 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 313 transitions. Word has length 57 [2022-07-12 06:55:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:05,161 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 313 transitions. [2022-07-12 06:55:05,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,161 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 313 transitions. [2022-07-12 06:55:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 06:55:05,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:05,168 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] [2022-07-12 06:55:05,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:55:05,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:05,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1883490782, now seen corresponding path program 1 times [2022-07-12 06:55:05,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:05,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72079488] [2022-07-12 06:55:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:05,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:05,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72079488] [2022-07-12 06:55:05,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72079488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:05,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:05,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:55:05,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855312979] [2022-07-12 06:55:05,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:05,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:55:05,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:55:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:05,251 INFO L87 Difference]: Start difference. First operand 199 states and 313 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:05,285 INFO L93 Difference]: Finished difference Result 475 states and 769 transitions. [2022-07-12 06:55:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:55:05,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-07-12 06:55:05,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:05,288 INFO L225 Difference]: With dead ends: 475 [2022-07-12 06:55:05,289 INFO L226 Difference]: Without dead ends: 330 [2022-07-12 06:55:05,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:05,291 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 110 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:05,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 442 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-12 06:55:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2022-07-12 06:55:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.6055045871559632) internal successors, (525), 327 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 525 transitions. [2022-07-12 06:55:05,317 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 525 transitions. Word has length 59 [2022-07-12 06:55:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:05,318 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 525 transitions. [2022-07-12 06:55:05,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 525 transitions. [2022-07-12 06:55:05,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 06:55:05,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:05,321 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] [2022-07-12 06:55:05,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:55:05,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:05,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash -111872728, now seen corresponding path program 1 times [2022-07-12 06:55:05,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:05,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015848883] [2022-07-12 06:55:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:05,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:05,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:05,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015848883] [2022-07-12 06:55:05,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015848883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:05,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:05,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:55:05,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892887584] [2022-07-12 06:55:05,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:05,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:55:05,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:55:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:05,379 INFO L87 Difference]: Start difference. First operand 328 states and 525 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:05,411 INFO L93 Difference]: Finished difference Result 603 states and 981 transitions. [2022-07-12 06:55:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:55:05,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-07-12 06:55:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:05,414 INFO L225 Difference]: With dead ends: 603 [2022-07-12 06:55:05,415 INFO L226 Difference]: Without dead ends: 458 [2022-07-12 06:55:05,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:05,417 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 111 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:05,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 444 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-07-12 06:55:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 456. [2022-07-12 06:55:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 1.6153846153846154) internal successors, (735), 455 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 735 transitions. [2022-07-12 06:55:05,436 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 735 transitions. Word has length 61 [2022-07-12 06:55:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:05,437 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 735 transitions. [2022-07-12 06:55:05,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 735 transitions. [2022-07-12 06:55:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 06:55:05,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:05,438 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] [2022-07-12 06:55:05,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:55:05,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:05,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:05,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1275396395, now seen corresponding path program 1 times [2022-07-12 06:55:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:05,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966894072] [2022-07-12 06:55:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:05,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:05,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:05,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966894072] [2022-07-12 06:55:05,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966894072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:05,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:05,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:55:05,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255414028] [2022-07-12 06:55:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:55:05,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:55:05,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:05,536 INFO L87 Difference]: Start difference. First operand 456 states and 735 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:05,594 INFO L93 Difference]: Finished difference Result 1172 states and 1911 transitions. [2022-07-12 06:55:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:55:05,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-07-12 06:55:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:05,597 INFO L225 Difference]: With dead ends: 1172 [2022-07-12 06:55:05,597 INFO L226 Difference]: Without dead ends: 793 [2022-07-12 06:55:05,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:05,599 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:05,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 380 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-07-12 06:55:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 791. [2022-07-12 06:55:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.6164556962025316) internal successors, (1277), 790 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1277 transitions. [2022-07-12 06:55:05,627 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1277 transitions. Word has length 61 [2022-07-12 06:55:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:05,627 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1277 transitions. [2022-07-12 06:55:05,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1277 transitions. [2022-07-12 06:55:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:55:05,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:05,629 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] [2022-07-12 06:55:05,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:55:05,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1280827262, now seen corresponding path program 1 times [2022-07-12 06:55:05,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:05,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064010921] [2022-07-12 06:55:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:05,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:05,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064010921] [2022-07-12 06:55:05,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064010921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:05,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:05,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:55:05,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262116751] [2022-07-12 06:55:05,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:05,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:55:05,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:05,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:55:05,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:55:05,679 INFO L87 Difference]: Start difference. First operand 791 states and 1277 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:05,916 INFO L93 Difference]: Finished difference Result 3568 states and 5888 transitions. [2022-07-12 06:55:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:55:05,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2022-07-12 06:55:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:05,925 INFO L225 Difference]: With dead ends: 3568 [2022-07-12 06:55:05,926 INFO L226 Difference]: Without dead ends: 2854 [2022-07-12 06:55:05,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:55:05,928 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 881 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:05,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1260 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:55:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-07-12 06:55:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1432. [2022-07-12 06:55:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 1.623340321453529) internal successors, (2323), 1431 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2323 transitions. [2022-07-12 06:55:06,022 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2323 transitions. Word has length 63 [2022-07-12 06:55:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:06,023 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2323 transitions. [2022-07-12 06:55:06,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2323 transitions. [2022-07-12 06:55:06,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 06:55:06,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:06,026 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] [2022-07-12 06:55:06,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:55:06,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:06,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:06,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1113443658, now seen corresponding path program 1 times [2022-07-12 06:55:06,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:06,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038291019] [2022-07-12 06:55:06,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:06,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:06,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:06,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038291019] [2022-07-12 06:55:06,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038291019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:06,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:06,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:55:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93619103] [2022-07-12 06:55:06,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:06,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:55:06,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:55:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:55:06,098 INFO L87 Difference]: Start difference. First operand 1432 states and 2323 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:06,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:06,335 INFO L93 Difference]: Finished difference Result 4199 states and 6910 transitions. [2022-07-12 06:55:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:55:06,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2022-07-12 06:55:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:06,345 INFO L225 Difference]: With dead ends: 4199 [2022-07-12 06:55:06,345 INFO L226 Difference]: Without dead ends: 2846 [2022-07-12 06:55:06,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:55:06,350 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 379 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 674 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 [2022-07-12 06:55:06,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 674 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-07-12 06:55:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2127. [2022-07-12 06:55:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2126 states have (on average 1.6302916274694261) internal successors, (3466), 2126 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3466 transitions. [2022-07-12 06:55:06,499 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3466 transitions. Word has length 64 [2022-07-12 06:55:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:06,500 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3466 transitions. [2022-07-12 06:55:06,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:06,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3466 transitions. [2022-07-12 06:55:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 06:55:06,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:06,501 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] [2022-07-12 06:55:06,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:55:06,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:06,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1248232611, now seen corresponding path program 1 times [2022-07-12 06:55:06,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:06,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490798608] [2022-07-12 06:55:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:06,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:06,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490798608] [2022-07-12 06:55:06,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490798608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:06,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:06,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:55:06,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339492917] [2022-07-12 06:55:06,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:06,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:55:06,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:55:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:06,560 INFO L87 Difference]: Start difference. First operand 2127 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:06,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:06,742 INFO L93 Difference]: Finished difference Result 4121 states and 6752 transitions. [2022-07-12 06:55:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:55:06,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-12 06:55:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:06,752 INFO L225 Difference]: With dead ends: 4121 [2022-07-12 06:55:06,753 INFO L226 Difference]: Without dead ends: 2979 [2022-07-12 06:55:06,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:06,758 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 106 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:06,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 426 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:06,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2022-07-12 06:55:06,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2977. [2022-07-12 06:55:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2976 states have (on average 1.6256720430107527) internal successors, (4838), 2976 states have internal predecessors, (4838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4838 transitions. [2022-07-12 06:55:06,930 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4838 transitions. Word has length 64 [2022-07-12 06:55:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:06,930 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 4838 transitions. [2022-07-12 06:55:06,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4838 transitions. [2022-07-12 06:55:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 06:55:06,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:06,931 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] [2022-07-12 06:55:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:55:06,931 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -358605347, now seen corresponding path program 1 times [2022-07-12 06:55:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:06,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245775306] [2022-07-12 06:55:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:06,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:06,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245775306] [2022-07-12 06:55:06,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245775306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:06,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:06,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:55:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578137248] [2022-07-12 06:55:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:06,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:55:06,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:06,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:55:06,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:06,975 INFO L87 Difference]: Start difference. First operand 2977 states and 4838 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:07,188 INFO L93 Difference]: Finished difference Result 6399 states and 10550 transitions. [2022-07-12 06:55:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:55:07,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-12 06:55:07,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:07,201 INFO L225 Difference]: With dead ends: 6399 [2022-07-12 06:55:07,201 INFO L226 Difference]: Without dead ends: 4313 [2022-07-12 06:55:07,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:07,205 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:07,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:07,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2022-07-12 06:55:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4311. [2022-07-12 06:55:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 4310 states have (on average 1.6331786542923434) internal successors, (7039), 4310 states have internal predecessors, (7039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7039 transitions. [2022-07-12 06:55:07,487 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7039 transitions. Word has length 64 [2022-07-12 06:55:07,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:07,487 INFO L495 AbstractCegarLoop]: Abstraction has 4311 states and 7039 transitions. [2022-07-12 06:55:07,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7039 transitions. [2022-07-12 06:55:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 06:55:07,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:07,488 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] [2022-07-12 06:55:07,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:55:07,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:07,489 INFO L85 PathProgramCache]: Analyzing trace with hash -214961207, now seen corresponding path program 1 times [2022-07-12 06:55:07,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:07,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787206332] [2022-07-12 06:55:07,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:07,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:07,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787206332] [2022-07-12 06:55:07,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787206332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:07,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:07,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:55:07,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420239608] [2022-07-12 06:55:07,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:07,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:55:07,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:07,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:55:07,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:55:07,521 INFO L87 Difference]: Start difference. First operand 4311 states and 7039 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:08,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:08,017 INFO L93 Difference]: Finished difference Result 13702 states and 22482 transitions. [2022-07-12 06:55:08,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:55:08,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2022-07-12 06:55:08,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:08,051 INFO L225 Difference]: With dead ends: 13702 [2022-07-12 06:55:08,051 INFO L226 Difference]: Without dead ends: 9473 [2022-07-12 06:55:08,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:55:08,060 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 377 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 681 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 [2022-07-12 06:55:08,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 681 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2022-07-12 06:55:08,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 6863. [2022-07-12 06:55:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6863 states, 6862 states have (on average 1.6264937336053629) internal successors, (11161), 6862 states have internal predecessors, (11161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6863 states to 6863 states and 11161 transitions. [2022-07-12 06:55:08,552 INFO L78 Accepts]: Start accepts. Automaton has 6863 states and 11161 transitions. Word has length 65 [2022-07-12 06:55:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:08,553 INFO L495 AbstractCegarLoop]: Abstraction has 6863 states and 11161 transitions. [2022-07-12 06:55:08,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6863 states and 11161 transitions. [2022-07-12 06:55:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 06:55:08,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:08,554 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] [2022-07-12 06:55:08,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:55:08,554 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:08,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1872749021, now seen corresponding path program 1 times [2022-07-12 06:55:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:08,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368372605] [2022-07-12 06:55:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:08,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:08,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:08,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:08,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368372605] [2022-07-12 06:55:08,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368372605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:08,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:08,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:55:08,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833243223] [2022-07-12 06:55:08,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:08,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:55:08,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:08,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:55:08,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:55:08,596 INFO L87 Difference]: Start difference. First operand 6863 states and 11161 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:09,578 INFO L93 Difference]: Finished difference Result 21434 states and 34994 transitions. [2022-07-12 06:55:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:55:09,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-07-12 06:55:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:09,606 INFO L225 Difference]: With dead ends: 21434 [2022-07-12 06:55:09,607 INFO L226 Difference]: Without dead ends: 14653 [2022-07-12 06:55:09,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:55:09,616 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 375 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:09,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 663 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14653 states. [2022-07-12 06:55:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14653 to 10715. [2022-07-12 06:55:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10715 states, 10714 states have (on average 1.6190965092402465) internal successors, (17347), 10714 states have internal predecessors, (17347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 17347 transitions. [2022-07-12 06:55:10,430 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 17347 transitions. Word has length 66 [2022-07-12 06:55:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:10,430 INFO L495 AbstractCegarLoop]: Abstraction has 10715 states and 17347 transitions. [2022-07-12 06:55:10,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 17347 transitions. [2022-07-12 06:55:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 06:55:10,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:10,431 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] [2022-07-12 06:55:10,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:55:10,432 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1396799506, now seen corresponding path program 1 times [2022-07-12 06:55:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:10,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863559132] [2022-07-12 06:55:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:10,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:10,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863559132] [2022-07-12 06:55:10,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863559132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:10,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:10,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:55:10,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571328283] [2022-07-12 06:55:10,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:10,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:55:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:55:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:55:10,508 INFO L87 Difference]: Start difference. First operand 10715 states and 17347 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:11,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:11,451 INFO L93 Difference]: Finished difference Result 21350 states and 34583 transitions. [2022-07-12 06:55:11,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:55:11,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2022-07-12 06:55:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:11,470 INFO L225 Difference]: With dead ends: 21350 [2022-07-12 06:55:11,471 INFO L226 Difference]: Without dead ends: 10717 [2022-07-12 06:55:11,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:55:11,480 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 269 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:11,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 552 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10717 states. [2022-07-12 06:55:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10717 to 10715. [2022-07-12 06:55:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10715 states, 10714 states have (on average 1.607429531454172) internal successors, (17222), 10714 states have internal predecessors, (17222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 17222 transitions. [2022-07-12 06:55:12,171 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 17222 transitions. Word has length 68 [2022-07-12 06:55:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:12,172 INFO L495 AbstractCegarLoop]: Abstraction has 10715 states and 17222 transitions. [2022-07-12 06:55:12,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:12,172 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 17222 transitions. [2022-07-12 06:55:12,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 06:55:12,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:12,173 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] [2022-07-12 06:55:12,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:55:12,173 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:12,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:12,174 INFO L85 PathProgramCache]: Analyzing trace with hash -164512453, now seen corresponding path program 1 times [2022-07-12 06:55:12,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:12,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117086677] [2022-07-12 06:55:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:12,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:12,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:12,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117086677] [2022-07-12 06:55:12,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117086677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:12,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:12,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:55:12,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17332701] [2022-07-12 06:55:12,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:12,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:55:12,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:12,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:55:12,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:55:12,238 INFO L87 Difference]: Start difference. First operand 10715 states and 17222 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:13,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:13,651 INFO L93 Difference]: Finished difference Result 30660 states and 49437 transitions. [2022-07-12 06:55:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:55:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2022-07-12 06:55:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:13,752 INFO L225 Difference]: With dead ends: 30660 [2022-07-12 06:55:13,763 INFO L226 Difference]: Without dead ends: 20027 [2022-07-12 06:55:13,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:55:13,791 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 367 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:13,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 559 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:13,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20027 states. [2022-07-12 06:55:15,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20027 to 20025. [2022-07-12 06:55:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20025 states, 20024 states have (on average 1.5949360767079506) internal successors, (31937), 20024 states have internal predecessors, (31937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20025 states to 20025 states and 31937 transitions. [2022-07-12 06:55:15,482 INFO L78 Accepts]: Start accepts. Automaton has 20025 states and 31937 transitions. Word has length 71 [2022-07-12 06:55:15,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:15,482 INFO L495 AbstractCegarLoop]: Abstraction has 20025 states and 31937 transitions. [2022-07-12 06:55:15,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:15,483 INFO L276 IsEmpty]: Start isEmpty. Operand 20025 states and 31937 transitions. [2022-07-12 06:55:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 06:55:15,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:15,483 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] [2022-07-12 06:55:15,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:55:15,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:15,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash -806828053, now seen corresponding path program 1 times [2022-07-12 06:55:15,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:15,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572391288] [2022-07-12 06:55:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:15,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:15,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:15,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572391288] [2022-07-12 06:55:15,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572391288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:15,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:15,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:55:15,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563819359] [2022-07-12 06:55:15,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:15,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:55:15,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:15,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:55:15,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:55:15,541 INFO L87 Difference]: Start difference. First operand 20025 states and 31937 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:18,165 INFO L93 Difference]: Finished difference Result 38403 states and 60950 transitions. [2022-07-12 06:55:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:55:18,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 72 [2022-07-12 06:55:18,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:18,241 INFO L225 Difference]: With dead ends: 38403 [2022-07-12 06:55:18,242 INFO L226 Difference]: Without dead ends: 38401 [2022-07-12 06:55:18,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:55:18,261 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 234 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:18,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 942 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38401 states. [2022-07-12 06:55:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38401 to 20749. [2022-07-12 06:55:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20749 states, 20748 states have (on average 1.573742047426258) internal successors, (32652), 20748 states have internal predecessors, (32652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20749 states to 20749 states and 32652 transitions. [2022-07-12 06:55:20,494 INFO L78 Accepts]: Start accepts. Automaton has 20749 states and 32652 transitions. Word has length 72 [2022-07-12 06:55:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:20,494 INFO L495 AbstractCegarLoop]: Abstraction has 20749 states and 32652 transitions. [2022-07-12 06:55:20,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 20749 states and 32652 transitions. [2022-07-12 06:55:20,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 06:55:20,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:20,498 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:55:20,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:55:20,498 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:20,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:20,499 INFO L85 PathProgramCache]: Analyzing trace with hash 25494517, now seen corresponding path program 1 times [2022-07-12 06:55:20,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:20,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595734902] [2022-07-12 06:55:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 06:55:20,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:20,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595734902] [2022-07-12 06:55:20,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595734902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:20,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:20,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:55:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752847561] [2022-07-12 06:55:20,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:20,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:55:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:55:20,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:55:20,572 INFO L87 Difference]: Start difference. First operand 20749 states and 32652 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:25,225 INFO L93 Difference]: Finished difference Result 50557 states and 79854 transitions. [2022-07-12 06:55:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:55:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 93 [2022-07-12 06:55:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:25,319 INFO L225 Difference]: With dead ends: 50557 [2022-07-12 06:55:25,320 INFO L226 Difference]: Without dead ends: 40765 [2022-07-12 06:55:25,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:55:25,350 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 483 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:25,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 872 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40765 states. [2022-07-12 06:55:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40765 to 31835. [2022-07-12 06:55:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31835 states, 31834 states have (on average 1.572532512408117) internal successors, (50060), 31834 states have internal predecessors, (50060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31835 states to 31835 states and 50060 transitions. [2022-07-12 06:55:28,134 INFO L78 Accepts]: Start accepts. Automaton has 31835 states and 50060 transitions. Word has length 93 [2022-07-12 06:55:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:28,134 INFO L495 AbstractCegarLoop]: Abstraction has 31835 states and 50060 transitions. [2022-07-12 06:55:28,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:28,134 INFO L276 IsEmpty]: Start isEmpty. Operand 31835 states and 50060 transitions. [2022-07-12 06:55:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 06:55:28,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:28,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:55:28,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:55:28,137 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1396393528, now seen corresponding path program 1 times [2022-07-12 06:55:28,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:28,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870887856] [2022-07-12 06:55:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:28,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 06:55:28,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:28,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870887856] [2022-07-12 06:55:28,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870887856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:28,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:28,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:55:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091648977] [2022-07-12 06:55:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:28,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:55:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:55:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:55:28,180 INFO L87 Difference]: Start difference. First operand 31835 states and 50060 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:31,687 INFO L93 Difference]: Finished difference Result 54449 states and 86018 transitions. [2022-07-12 06:55:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:55:31,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 93 [2022-07-12 06:55:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:31,764 INFO L225 Difference]: With dead ends: 54449 [2022-07-12 06:55:31,765 INFO L226 Difference]: Without dead ends: 44657 [2022-07-12 06:55:31,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:55:31,793 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 479 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:31,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 873 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44657 states. [2022-07-12 06:55:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44657 to 43067. [2022-07-12 06:55:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43067 states, 43066 states have (on average 1.573445409371662) internal successors, (67762), 43066 states have internal predecessors, (67762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:35,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43067 states to 43067 states and 67762 transitions. [2022-07-12 06:55:35,845 INFO L78 Accepts]: Start accepts. Automaton has 43067 states and 67762 transitions. Word has length 93 [2022-07-12 06:55:35,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:35,846 INFO L495 AbstractCegarLoop]: Abstraction has 43067 states and 67762 transitions. [2022-07-12 06:55:35,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:35,846 INFO L276 IsEmpty]: Start isEmpty. Operand 43067 states and 67762 transitions. [2022-07-12 06:55:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 06:55:35,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:35,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:55:35,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:55:35,854 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash -903182280, now seen corresponding path program 1 times [2022-07-12 06:55:35,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:35,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611925727] [2022-07-12 06:55:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:35,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:55:35,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:35,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611925727] [2022-07-12 06:55:35,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611925727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:35,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:35,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:55:35,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362630364] [2022-07-12 06:55:35,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:35,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:55:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:55:35,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:35,893 INFO L87 Difference]: Start difference. First operand 43067 states and 67762 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:42,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:42,373 INFO L93 Difference]: Finished difference Result 89605 states and 141689 transitions. [2022-07-12 06:55:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:55:42,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-12 06:55:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:42,553 INFO L225 Difference]: With dead ends: 89605 [2022-07-12 06:55:42,553 INFO L226 Difference]: Without dead ends: 79583 [2022-07-12 06:55:42,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:42,588 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 96 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:42,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 370 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79583 states. [2022-07-12 06:55:50,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79583 to 79466. [2022-07-12 06:55:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79466 states, 79465 states have (on average 1.5773233499024728) internal successors, (125342), 79465 states have internal predecessors, (125342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79466 states to 79466 states and 125342 transitions. [2022-07-12 06:55:50,502 INFO L78 Accepts]: Start accepts. Automaton has 79466 states and 125342 transitions. Word has length 93 [2022-07-12 06:55:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:55:50,504 INFO L495 AbstractCegarLoop]: Abstraction has 79466 states and 125342 transitions. [2022-07-12 06:55:50,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 79466 states and 125342 transitions. [2022-07-12 06:55:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 06:55:50,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:55:50,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:55:50,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:55:50,526 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:55:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:55:50,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1205465200, now seen corresponding path program 1 times [2022-07-12 06:55:50,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:55:50,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755173004] [2022-07-12 06:55:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:55:50,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:55:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:55:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:55:50,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:55:50,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755173004] [2022-07-12 06:55:50,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755173004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:55:50,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:55:50,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:55:50,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285940011] [2022-07-12 06:55:50,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:55:50,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:55:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:55:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:55:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:50,568 INFO L87 Difference]: Start difference. First operand 79466 states and 125342 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:55:57,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:55:57,541 INFO L93 Difference]: Finished difference Result 152410 states and 240883 transitions. [2022-07-12 06:55:57,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:55:57,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-12 06:55:57,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:55:57,693 INFO L225 Difference]: With dead ends: 152410 [2022-07-12 06:55:57,693 INFO L226 Difference]: Without dead ends: 73026 [2022-07-12 06:55:57,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:55:57,774 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:55:57,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 433 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:55:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73026 states.