./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93af4e6a9c0eb04ce4865a35985b5a12937072c2a8c22ec9da868c5c828002bb --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:53:34,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:53:34,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:53:34,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:53:34,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:53:34,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:53:34,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:53:34,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:53:34,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:53:34,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:53:34,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:53:34,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:53:34,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:53:34,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:53:34,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:53:34,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:53:34,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:53:34,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:53:34,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:53:34,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:53:34,652 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:53:34,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:53:34,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:53:34,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:53:34,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:53:34,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:53:34,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:53:34,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:53:34,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:53:34,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:53:34,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:53:34,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:53:34,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:53:34,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:53:34,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:53:34,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:53:34,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:53:34,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:53:34,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:53:34,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:53:34,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:53:34,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:53:34,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:53:34,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:53:34,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:53:34,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:53:34,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:53:34,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:53:34,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:53:34,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:53:34,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:53:34,703 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:53:34,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:53:34,704 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:53:34,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:53:34,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:53:34,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:53:34,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:53:34,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:53:34,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:53:34,705 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:53:34,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:53:34,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:53:34,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:53:34,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:53:34,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:53:34,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:53:34,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:53:34,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:53:34,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:53:34,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:53:34,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:53:34,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:53:34,708 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:53:34,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:53:34,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:53:34,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93af4e6a9c0eb04ce4865a35985b5a12937072c2a8c22ec9da868c5c828002bb [2022-07-22 18:53:34,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:53:34,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:53:34,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:53:34,899 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:53:34,899 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:53:34,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:53:34,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91f9b63aa/4a52f88b546a464ca5164674f472c651/FLAG299a35b92 [2022-07-22 18:53:35,320 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:53:35,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:53:35,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91f9b63aa/4a52f88b546a464ca5164674f472c651/FLAG299a35b92 [2022-07-22 18:53:35,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91f9b63aa/4a52f88b546a464ca5164674f472c651 [2022-07-22 18:53:35,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:53:35,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:53:35,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:53:35,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:53:35,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:53:35,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de74211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35, skipping insertion in model container [2022-07-22 18:53:35,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:53:35,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:53:35,636 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_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10668,10681] [2022-07-22 18:53:35,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:53:35,729 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:53:35,773 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_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10668,10681] [2022-07-22 18:53:35,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:53:35,814 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:53:35,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35 WrapperNode [2022-07-22 18:53:35,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:53:35,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:53:35,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:53:35,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:53:35,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,867 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 952 [2022-07-22 18:53:35,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:53:35,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:53:35,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:53:35,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:53:35,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:53:35,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:53:35,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:53:35,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:53:35,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (1/1) ... [2022-07-22 18:53:35,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:53:35,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:53:35,949 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) [2022-07-22 18:53:35,950 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 [2022-07-22 18:53:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:53:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:53:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:53:35,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:53:36,118 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:53:36,119 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:53:36,704 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:53:36,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:53:36,710 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:53:36,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:53:36 BoogieIcfgContainer [2022-07-22 18:53:36,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:53:36,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:53:36,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:53:36,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:53:36,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:53:35" (1/3) ... [2022-07-22 18:53:36,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d1bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:53:36, skipping insertion in model container [2022-07-22 18:53:36,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:53:35" (2/3) ... [2022-07-22 18:53:36,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d1bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:53:36, skipping insertion in model container [2022-07-22 18:53:36,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:53:36" (3/3) ... [2022-07-22 18:53:36,719 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:53:36,728 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:53:36,728 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:53:36,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:53:36,786 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@6e645d8f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51f5a971 [2022-07-22 18:53:36,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:53:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 245 states have (on average 1.7591836734693878) internal successors, (431), 246 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:36,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 18:53:36,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:36,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:36,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1005429677, now seen corresponding path program 1 times [2022-07-22 18:53:36,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:36,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996690710] [2022-07-22 18:53:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:36,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:37,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:37,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996690710] [2022-07-22 18:53:37,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996690710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:37,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:37,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:53:37,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925240973] [2022-07-22 18:53:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:37,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:53:37,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:37,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:53:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:53:37,211 INFO L87 Difference]: Start difference. First operand has 247 states, 245 states have (on average 1.7591836734693878) internal successors, (431), 246 states have internal predecessors, (431), 0 states have call successors, (0), 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 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:37,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:37,356 INFO L93 Difference]: Finished difference Result 714 states and 1248 transitions. [2022-07-22 18:53:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:53:37,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-07-22 18:53:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:37,374 INFO L225 Difference]: With dead ends: 714 [2022-07-22 18:53:37,375 INFO L226 Difference]: Without dead ends: 470 [2022-07-22 18:53:37,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:37,382 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1005 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:37,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 993 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:37,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-22 18:53:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 468. [2022-07-22 18:53:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.4753747323340471) internal successors, (689), 467 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 689 transitions. [2022-07-22 18:53:37,459 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 689 transitions. Word has length 101 [2022-07-22 18:53:37,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:37,459 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 689 transitions. [2022-07-22 18:53:37,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 689 transitions. [2022-07-22 18:53:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 18:53:37,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:37,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:37,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:53:37,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:37,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:37,464 INFO L85 PathProgramCache]: Analyzing trace with hash -769716679, now seen corresponding path program 1 times [2022-07-22 18:53:37,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:37,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146648400] [2022-07-22 18:53:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:37,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:37,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:37,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146648400] [2022-07-22 18:53:37,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146648400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:37,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:37,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:53:37,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70360066] [2022-07-22 18:53:37,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:37,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:53:37,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:37,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:53:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:53:37,513 INFO L87 Difference]: Start difference. First operand 468 states and 689 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:37,580 INFO L93 Difference]: Finished difference Result 1366 states and 2005 transitions. [2022-07-22 18:53:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:53:37,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-07-22 18:53:37,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:37,584 INFO L225 Difference]: With dead ends: 1366 [2022-07-22 18:53:37,584 INFO L226 Difference]: Without dead ends: 926 [2022-07-22 18:53:37,589 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 [2022-07-22 18:53:37,590 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 352 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:37,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1041 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-07-22 18:53:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 470. [2022-07-22 18:53:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.4733475479744136) internal successors, (691), 469 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 691 transitions. [2022-07-22 18:53:37,638 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 691 transitions. Word has length 102 [2022-07-22 18:53:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:37,639 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 691 transitions. [2022-07-22 18:53:37,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 691 transitions. [2022-07-22 18:53:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 18:53:37,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:37,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:37,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:53:37,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1142488916, now seen corresponding path program 1 times [2022-07-22 18:53:37,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:37,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453649895] [2022-07-22 18:53:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:37,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:37,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:37,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453649895] [2022-07-22 18:53:37,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453649895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:37,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:37,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:53:37,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054957767] [2022-07-22 18:53:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:53:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:53:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:53:37,734 INFO L87 Difference]: Start difference. First operand 470 states and 691 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:37,788 INFO L93 Difference]: Finished difference Result 977 states and 1492 transitions. [2022-07-22 18:53:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:53:37,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-07-22 18:53:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:37,791 INFO L225 Difference]: With dead ends: 977 [2022-07-22 18:53:37,791 INFO L226 Difference]: Without dead ends: 634 [2022-07-22 18:53:37,792 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 [2022-07-22 18:53:37,793 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 233 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:37,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 745 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-07-22 18:53:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 618. [2022-07-22 18:53:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 1.5153970826580228) internal successors, (935), 617 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 935 transitions. [2022-07-22 18:53:37,823 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 935 transitions. Word has length 103 [2022-07-22 18:53:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:37,823 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 935 transitions. [2022-07-22 18:53:37,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 935 transitions. [2022-07-22 18:53:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 18:53:37,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:37,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:37,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:53:37,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:37,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:37,826 INFO L85 PathProgramCache]: Analyzing trace with hash -362955380, now seen corresponding path program 1 times [2022-07-22 18:53:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:37,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727393743] [2022-07-22 18:53:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:37,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:37,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727393743] [2022-07-22 18:53:37,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727393743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:37,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:37,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:53:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136364365] [2022-07-22 18:53:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:37,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:53:37,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:37,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:53:37,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:53:37,955 INFO L87 Difference]: Start difference. First operand 618 states and 935 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:38,080 INFO L93 Difference]: Finished difference Result 1766 states and 2661 transitions. [2022-07-22 18:53:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:53:38,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-07-22 18:53:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:38,085 INFO L225 Difference]: With dead ends: 1766 [2022-07-22 18:53:38,085 INFO L226 Difference]: Without dead ends: 1178 [2022-07-22 18:53:38,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:38,087 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 760 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:38,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 858 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:38,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-07-22 18:53:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1176. [2022-07-22 18:53:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 1.4978723404255319) internal successors, (1760), 1175 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1760 transitions. [2022-07-22 18:53:38,168 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1760 transitions. Word has length 103 [2022-07-22 18:53:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:38,169 INFO L495 AbstractCegarLoop]: Abstraction has 1176 states and 1760 transitions. [2022-07-22 18:53:38,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:38,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1760 transitions. [2022-07-22 18:53:38,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:53:38,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:38,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:38,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:53:38,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:38,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:38,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1797210952, now seen corresponding path program 1 times [2022-07-22 18:53:38,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:38,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389063826] [2022-07-22 18:53:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:38,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:38,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:38,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389063826] [2022-07-22 18:53:38,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389063826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:38,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:38,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:53:38,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812523649] [2022-07-22 18:53:38,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:38,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:53:38,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:38,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:53:38,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:53:38,205 INFO L87 Difference]: Start difference. First operand 1176 states and 1760 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:38,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:38,344 INFO L93 Difference]: Finished difference Result 3452 states and 5160 transitions. [2022-07-22 18:53:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:53:38,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-07-22 18:53:38,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:38,353 INFO L225 Difference]: With dead ends: 3452 [2022-07-22 18:53:38,353 INFO L226 Difference]: Without dead ends: 2320 [2022-07-22 18:53:38,354 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 [2022-07-22 18:53:38,356 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 336 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:38,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1046 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2022-07-22 18:53:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1180. [2022-07-22 18:53:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 1.4961832061068703) internal successors, (1764), 1179 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1764 transitions. [2022-07-22 18:53:38,432 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1764 transitions. Word has length 104 [2022-07-22 18:53:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:38,433 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1764 transitions. [2022-07-22 18:53:38,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1764 transitions. [2022-07-22 18:53:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:53:38,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:38,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:38,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:53:38,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:38,445 INFO L85 PathProgramCache]: Analyzing trace with hash 978474865, now seen corresponding path program 1 times [2022-07-22 18:53:38,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:38,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130225979] [2022-07-22 18:53:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:38,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:38,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130225979] [2022-07-22 18:53:38,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130225979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:38,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:38,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:53:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162917177] [2022-07-22 18:53:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:38,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:53:38,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:53:38,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:53:38,487 INFO L87 Difference]: Start difference. First operand 1180 states and 1764 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:38,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:38,620 INFO L93 Difference]: Finished difference Result 2640 states and 4114 transitions. [2022-07-22 18:53:38,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:53:38,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-07-22 18:53:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:38,626 INFO L225 Difference]: With dead ends: 2640 [2022-07-22 18:53:38,626 INFO L226 Difference]: Without dead ends: 1744 [2022-07-22 18:53:38,627 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 [2022-07-22 18:53:38,629 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 241 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:38,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 729 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:38,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-07-22 18:53:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1690. [2022-07-22 18:53:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 1.5429248075784487) internal successors, (2606), 1689 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2606 transitions. [2022-07-22 18:53:38,756 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2606 transitions. Word has length 105 [2022-07-22 18:53:38,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:38,757 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2606 transitions. [2022-07-22 18:53:38,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2606 transitions. [2022-07-22 18:53:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:53:38,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:38,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:38,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:53:38,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:38,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:38,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1850549439, now seen corresponding path program 1 times [2022-07-22 18:53:38,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:38,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714913521] [2022-07-22 18:53:38,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:38,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:38,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714913521] [2022-07-22 18:53:38,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714913521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:38,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:38,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:53:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115314130] [2022-07-22 18:53:38,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:38,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:53:38,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:38,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:53:38,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:53:38,817 INFO L87 Difference]: Start difference. First operand 1690 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:39,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:39,048 INFO L93 Difference]: Finished difference Result 4594 states and 7162 transitions. [2022-07-22 18:53:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:53:39,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-07-22 18:53:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:39,057 INFO L225 Difference]: With dead ends: 4594 [2022-07-22 18:53:39,058 INFO L226 Difference]: Without dead ends: 3236 [2022-07-22 18:53:39,060 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 [2022-07-22 18:53:39,061 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 280 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:39,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 980 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2022-07-22 18:53:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3234. [2022-07-22 18:53:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3233 states have (on average 1.530467058459635) internal successors, (4948), 3233 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4948 transitions. [2022-07-22 18:53:39,326 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4948 transitions. Word has length 105 [2022-07-22 18:53:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:39,327 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 4948 transitions. [2022-07-22 18:53:39,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4948 transitions. [2022-07-22 18:53:39,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:53:39,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:39,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:39,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:53:39,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:39,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:39,330 INFO L85 PathProgramCache]: Analyzing trace with hash -417340030, now seen corresponding path program 1 times [2022-07-22 18:53:39,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:39,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020809162] [2022-07-22 18:53:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:39,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:39,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020809162] [2022-07-22 18:53:39,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020809162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:39,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:39,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:53:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5661099] [2022-07-22 18:53:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:39,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:53:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:53:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:39,424 INFO L87 Difference]: Start difference. First operand 3234 states and 4948 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:39,853 INFO L93 Difference]: Finished difference Result 8716 states and 13341 transitions. [2022-07-22 18:53:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:53:39,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-07-22 18:53:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:39,872 INFO L225 Difference]: With dead ends: 8716 [2022-07-22 18:53:39,873 INFO L226 Difference]: Without dead ends: 5519 [2022-07-22 18:53:39,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:39,876 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 653 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:39,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1218 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:53:39,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2022-07-22 18:53:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5517. [2022-07-22 18:53:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5517 states, 5516 states have (on average 1.5159535895576504) internal successors, (8362), 5516 states have internal predecessors, (8362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 8362 transitions. [2022-07-22 18:53:40,351 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 8362 transitions. Word has length 105 [2022-07-22 18:53:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:40,351 INFO L495 AbstractCegarLoop]: Abstraction has 5517 states and 8362 transitions. [2022-07-22 18:53:40,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:40,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 8362 transitions. [2022-07-22 18:53:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:53:40,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:40,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:40,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:53:40,355 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:40,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:40,355 INFO L85 PathProgramCache]: Analyzing trace with hash 540693227, now seen corresponding path program 1 times [2022-07-22 18:53:40,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:40,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19464392] [2022-07-22 18:53:40,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:40,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:40,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:40,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:40,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19464392] [2022-07-22 18:53:40,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19464392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:40,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:40,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:53:40,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327654192] [2022-07-22 18:53:40,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:40,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:53:40,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:53:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:53:40,436 INFO L87 Difference]: Start difference. First operand 5517 states and 8362 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:40,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:40,894 INFO L93 Difference]: Finished difference Result 11296 states and 16989 transitions. [2022-07-22 18:53:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:53:40,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-07-22 18:53:40,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:40,911 INFO L225 Difference]: With dead ends: 11296 [2022-07-22 18:53:40,912 INFO L226 Difference]: Without dead ends: 5896 [2022-07-22 18:53:40,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:40,917 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 698 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:40,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 881 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2022-07-22 18:53:41,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5741. [2022-07-22 18:53:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5741 states, 5740 states have (on average 1.4993031358885018) internal successors, (8606), 5740 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 8606 transitions. [2022-07-22 18:53:41,431 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 8606 transitions. Word has length 105 [2022-07-22 18:53:41,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:41,431 INFO L495 AbstractCegarLoop]: Abstraction has 5741 states and 8606 transitions. [2022-07-22 18:53:41,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 8606 transitions. [2022-07-22 18:53:41,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 18:53:41,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:41,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:41,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:53:41,436 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:41,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:41,436 INFO L85 PathProgramCache]: Analyzing trace with hash 138743479, now seen corresponding path program 1 times [2022-07-22 18:53:41,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:41,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913853247] [2022-07-22 18:53:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:41,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:41,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:41,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913853247] [2022-07-22 18:53:41,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913853247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:41,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:41,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:53:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313468704] [2022-07-22 18:53:41,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:41,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:53:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:53:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:53:41,462 INFO L87 Difference]: Start difference. First operand 5741 states and 8606 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:42,241 INFO L93 Difference]: Finished difference Result 16497 states and 24904 transitions. [2022-07-22 18:53:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:53:42,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-22 18:53:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:42,277 INFO L225 Difference]: With dead ends: 16497 [2022-07-22 18:53:42,277 INFO L226 Difference]: Without dead ends: 11357 [2022-07-22 18:53:42,283 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 [2022-07-22 18:53:42,284 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 320 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:42,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 826 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:42,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11357 states. [2022-07-22 18:53:42,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11357 to 5757. [2022-07-22 18:53:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5757 states, 5756 states have (on average 1.4979152189020153) internal successors, (8622), 5756 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5757 states to 5757 states and 8622 transitions. [2022-07-22 18:53:42,782 INFO L78 Accepts]: Start accepts. Automaton has 5757 states and 8622 transitions. Word has length 106 [2022-07-22 18:53:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:42,782 INFO L495 AbstractCegarLoop]: Abstraction has 5757 states and 8622 transitions. [2022-07-22 18:53:42,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5757 states and 8622 transitions. [2022-07-22 18:53:42,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 18:53:42,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:42,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:42,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:53:42,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2082987062, now seen corresponding path program 1 times [2022-07-22 18:53:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:42,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129127828] [2022-07-22 18:53:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:42,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:42,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129127828] [2022-07-22 18:53:42,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129127828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:42,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:42,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:53:42,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727192797] [2022-07-22 18:53:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:42,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:53:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:53:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:53:42,839 INFO L87 Difference]: Start difference. First operand 5757 states and 8622 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:43,372 INFO L93 Difference]: Finished difference Result 11504 states and 17230 transitions. [2022-07-22 18:53:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:53:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-07-22 18:53:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:43,382 INFO L225 Difference]: With dead ends: 11504 [2022-07-22 18:53:43,382 INFO L226 Difference]: Without dead ends: 5755 [2022-07-22 18:53:43,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:43,390 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 65 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1110 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 [2022-07-22 18:53:43,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1110 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5755 states. [2022-07-22 18:53:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5755 to 5755. [2022-07-22 18:53:43,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5755 states, 5754 states have (on average 1.4977407021202642) internal successors, (8618), 5754 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 8618 transitions. [2022-07-22 18:53:43,950 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 8618 transitions. Word has length 107 [2022-07-22 18:53:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:43,950 INFO L495 AbstractCegarLoop]: Abstraction has 5755 states and 8618 transitions. [2022-07-22 18:53:43,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 8618 transitions. [2022-07-22 18:53:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 18:53:43,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:43,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:43,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:53:43,954 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash 248103490, now seen corresponding path program 1 times [2022-07-22 18:53:43,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:43,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47625190] [2022-07-22 18:53:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:43,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:44,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:44,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47625190] [2022-07-22 18:53:44,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47625190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:44,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:44,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:53:44,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113458041] [2022-07-22 18:53:44,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:44,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:53:44,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:44,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:53:44,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:53:44,004 INFO L87 Difference]: Start difference. First operand 5755 states and 8618 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:44,623 INFO L93 Difference]: Finished difference Result 13045 states and 19796 transitions. [2022-07-22 18:53:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:53:44,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-07-22 18:53:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:44,638 INFO L225 Difference]: With dead ends: 13045 [2022-07-22 18:53:44,638 INFO L226 Difference]: Without dead ends: 8501 [2022-07-22 18:53:44,644 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 [2022-07-22 18:53:44,645 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 288 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:44,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 748 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:44,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2022-07-22 18:53:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 8499. [2022-07-22 18:53:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8499 states, 8498 states have (on average 1.476818074841139) internal successors, (12550), 8498 states have internal predecessors, (12550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8499 states to 8499 states and 12550 transitions. [2022-07-22 18:53:45,291 INFO L78 Accepts]: Start accepts. Automaton has 8499 states and 12550 transitions. Word has length 107 [2022-07-22 18:53:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:45,291 INFO L495 AbstractCegarLoop]: Abstraction has 8499 states and 12550 transitions. [2022-07-22 18:53:45,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 8499 states and 12550 transitions. [2022-07-22 18:53:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 18:53:45,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:45,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:45,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:53:45,296 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:45,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1043025895, now seen corresponding path program 1 times [2022-07-22 18:53:45,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:45,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061934756] [2022-07-22 18:53:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:45,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:45,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:45,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061934756] [2022-07-22 18:53:45,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061934756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:45,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:45,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:53:45,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272795329] [2022-07-22 18:53:45,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:45,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:53:45,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:45,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:53:45,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:53:45,325 INFO L87 Difference]: Start difference. First operand 8499 states and 12550 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:46,304 INFO L93 Difference]: Finished difference Result 18359 states and 28094 transitions. [2022-07-22 18:53:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:53:46,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-22 18:53:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:46,324 INFO L225 Difference]: With dead ends: 18359 [2022-07-22 18:53:46,324 INFO L226 Difference]: Without dead ends: 12642 [2022-07-22 18:53:46,331 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 [2022-07-22 18:53:46,332 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 245 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:46,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 712 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12642 states. [2022-07-22 18:53:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12642 to 12180. [2022-07-22 18:53:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12180 states, 12179 states have (on average 1.5104688398062238) internal successors, (18396), 12179 states have internal predecessors, (18396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 18396 transitions. [2022-07-22 18:53:47,601 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 18396 transitions. Word has length 109 [2022-07-22 18:53:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:47,601 INFO L495 AbstractCegarLoop]: Abstraction has 12180 states and 18396 transitions. [2022-07-22 18:53:47,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:47,602 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 18396 transitions. [2022-07-22 18:53:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 18:53:47,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:47,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:47,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:53:47,606 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:47,607 INFO L85 PathProgramCache]: Analyzing trace with hash 211922380, now seen corresponding path program 1 times [2022-07-22 18:53:47,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:47,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042719638] [2022-07-22 18:53:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:47,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:47,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042719638] [2022-07-22 18:53:47,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042719638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:47,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:47,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:53:47,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947593827] [2022-07-22 18:53:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:47,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:53:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:47,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:53:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:47,649 INFO L87 Difference]: Start difference. First operand 12180 states and 18396 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:48,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:48,790 INFO L93 Difference]: Finished difference Result 23210 states and 35482 transitions. [2022-07-22 18:53:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:53:48,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-22 18:53:48,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:48,811 INFO L225 Difference]: With dead ends: 23210 [2022-07-22 18:53:48,812 INFO L226 Difference]: Without dead ends: 12180 [2022-07-22 18:53:48,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:53:48,826 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 886 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:48,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 374 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:53:48,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12180 states. [2022-07-22 18:53:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12180 to 12180. [2022-07-22 18:53:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12180 states, 12179 states have (on average 1.496838820921258) internal successors, (18230), 12179 states have internal predecessors, (18230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 18230 transitions. [2022-07-22 18:53:49,975 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 18230 transitions. Word has length 110 [2022-07-22 18:53:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:49,976 INFO L495 AbstractCegarLoop]: Abstraction has 12180 states and 18230 transitions. [2022-07-22 18:53:49,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 18230 transitions. [2022-07-22 18:53:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 18:53:49,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:49,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:49,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:53:49,981 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:49,981 INFO L85 PathProgramCache]: Analyzing trace with hash 410270887, now seen corresponding path program 1 times [2022-07-22 18:53:49,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:49,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970653868] [2022-07-22 18:53:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:49,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:50,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:50,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970653868] [2022-07-22 18:53:50,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970653868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:50,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:50,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:53:50,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578495326] [2022-07-22 18:53:50,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:50,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:53:50,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:53:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:53:50,037 INFO L87 Difference]: Start difference. First operand 12180 states and 18230 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:52,210 INFO L93 Difference]: Finished difference Result 30759 states and 46380 transitions. [2022-07-22 18:53:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:53:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-22 18:53:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:52,237 INFO L225 Difference]: With dead ends: 30759 [2022-07-22 18:53:52,238 INFO L226 Difference]: Without dead ends: 18927 [2022-07-22 18:53:52,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:52,252 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 695 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:52,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 890 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18927 states. [2022-07-22 18:53:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18927 to 18925. [2022-07-22 18:53:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18925 states, 18924 states have (on average 1.4930247305009512) internal successors, (28254), 18924 states have internal predecessors, (28254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18925 states to 18925 states and 28254 transitions. [2022-07-22 18:53:54,324 INFO L78 Accepts]: Start accepts. Automaton has 18925 states and 28254 transitions. Word has length 110 [2022-07-22 18:53:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:54,324 INFO L495 AbstractCegarLoop]: Abstraction has 18925 states and 28254 transitions. [2022-07-22 18:53:54,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 18925 states and 28254 transitions. [2022-07-22 18:53:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 18:53:54,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:54,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:53:54,331 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:54,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2110822017, now seen corresponding path program 1 times [2022-07-22 18:53:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:54,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515840726] [2022-07-22 18:53:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:54,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:54,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515840726] [2022-07-22 18:53:54,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515840726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:54,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:54,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:53:54,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472927718] [2022-07-22 18:53:54,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:54,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:53:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:53:54,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:53:54,403 INFO L87 Difference]: Start difference. First operand 18925 states and 28254 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:56,055 INFO L93 Difference]: Finished difference Result 29923 states and 44851 transitions. [2022-07-22 18:53:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:53:56,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-22 18:53:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:56,081 INFO L225 Difference]: With dead ends: 29923 [2022-07-22 18:53:56,081 INFO L226 Difference]: Without dead ends: 15895 [2022-07-22 18:53:56,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:56,101 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 53 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:53:56,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1076 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15895 states. [2022-07-22 18:53:57,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15895 to 15895. [2022-07-22 18:53:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15895 states, 15894 states have (on average 1.4882345539197182) internal successors, (23654), 15894 states have internal predecessors, (23654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15895 states to 15895 states and 23654 transitions. [2022-07-22 18:53:57,788 INFO L78 Accepts]: Start accepts. Automaton has 15895 states and 23654 transitions. Word has length 112 [2022-07-22 18:53:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:53:57,788 INFO L495 AbstractCegarLoop]: Abstraction has 15895 states and 23654 transitions. [2022-07-22 18:53:57,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 15895 states and 23654 transitions. [2022-07-22 18:53:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 18:53:57,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:53:57,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:53:57,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:53:57,793 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:53:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:53:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2111608284, now seen corresponding path program 1 times [2022-07-22 18:53:57,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:53:57,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851791231] [2022-07-22 18:53:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:53:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:53:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:53:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:53:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:53:57,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851791231] [2022-07-22 18:53:57,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851791231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:53:57,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:53:57,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:53:57,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667831530] [2022-07-22 18:53:57,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:53:57,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:53:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:53:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:53:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:53:57,851 INFO L87 Difference]: Start difference. First operand 15895 states and 23654 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:53:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:53:59,306 INFO L93 Difference]: Finished difference Result 27467 states and 40894 transitions. [2022-07-22 18:53:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:53:59,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-07-22 18:53:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:53:59,320 INFO L225 Difference]: With dead ends: 27467 [2022-07-22 18:53:59,320 INFO L226 Difference]: Without dead ends: 11642 [2022-07-22 18:53:59,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:53:59,331 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 43 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1060 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 [2022-07-22 18:53:59,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1060 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:53:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2022-07-22 18:54:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 11642. [2022-07-22 18:54:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11642 states, 11641 states have (on average 1.4883601065200585) internal successors, (17326), 11641 states have internal predecessors, (17326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11642 states to 11642 states and 17326 transitions. [2022-07-22 18:54:00,701 INFO L78 Accepts]: Start accepts. Automaton has 11642 states and 17326 transitions. Word has length 115 [2022-07-22 18:54:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:00,701 INFO L495 AbstractCegarLoop]: Abstraction has 11642 states and 17326 transitions. [2022-07-22 18:54:00,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 11642 states and 17326 transitions. [2022-07-22 18:54:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 18:54:00,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:00,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:00,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:54:00,705 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:54:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash -993915098, now seen corresponding path program 1 times [2022-07-22 18:54:00,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:00,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033745628] [2022-07-22 18:54:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:00,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:00,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:00,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033745628] [2022-07-22 18:54:00,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033745628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:00,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:00,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:00,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380911783] [2022-07-22 18:54:00,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:00,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:54:00,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:00,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:54:00,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:54:00,763 INFO L87 Difference]: Start difference. First operand 11642 states and 17326 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:01,981 INFO L93 Difference]: Finished difference Result 20313 states and 30222 transitions. [2022-07-22 18:54:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:01,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-07-22 18:54:01,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:01,998 INFO L225 Difference]: With dead ends: 20313 [2022-07-22 18:54:01,999 INFO L226 Difference]: Without dead ends: 11632 [2022-07-22 18:54:02,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:02,009 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 23 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:02,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1042 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11632 states. [2022-07-22 18:54:03,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11632 to 11632. [2022-07-22 18:54:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11632 states, 11631 states have (on average 1.4883500988736995) internal successors, (17311), 11631 states have internal predecessors, (17311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 17311 transitions. [2022-07-22 18:54:03,284 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 17311 transitions. Word has length 120 [2022-07-22 18:54:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:03,284 INFO L495 AbstractCegarLoop]: Abstraction has 11632 states and 17311 transitions. [2022-07-22 18:54:03,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 17311 transitions. [2022-07-22 18:54:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 18:54:03,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:03,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:03,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 18:54:03,287 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:54:03,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:03,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1394285578, now seen corresponding path program 1 times [2022-07-22 18:54:03,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:03,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789657532] [2022-07-22 18:54:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:03,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:03,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:03,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789657532] [2022-07-22 18:54:03,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789657532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:03,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:03,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:54:03,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611251451] [2022-07-22 18:54:03,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:03,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:54:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:54:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:03,373 INFO L87 Difference]: Start difference. First operand 11632 states and 17311 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:04,686 INFO L93 Difference]: Finished difference Result 22352 states and 33242 transitions. [2022-07-22 18:54:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:04,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-07-22 18:54:04,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:04,698 INFO L225 Difference]: With dead ends: 22352 [2022-07-22 18:54:04,698 INFO L226 Difference]: Without dead ends: 10976 [2022-07-22 18:54:04,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:04,705 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 882 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:04,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 827 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:04,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10976 states. [2022-07-22 18:54:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10976 to 10819. [2022-07-22 18:54:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.4815122943242744) internal successors, (16027), 10818 states have internal predecessors, (16027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:05,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 16027 transitions. [2022-07-22 18:54:05,958 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 16027 transitions. Word has length 120 [2022-07-22 18:54:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:05,958 INFO L495 AbstractCegarLoop]: Abstraction has 10819 states and 16027 transitions. [2022-07-22 18:54:05,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 16027 transitions. [2022-07-22 18:54:05,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 18:54:05,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:05,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:05,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:54:05,962 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:54:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1343086903, now seen corresponding path program 1 times [2022-07-22 18:54:05,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:05,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621432775] [2022-07-22 18:54:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:05,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:06,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:06,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621432775] [2022-07-22 18:54:06,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621432775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:06,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:06,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:06,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847224161] [2022-07-22 18:54:06,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:06,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:54:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:06,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:54:06,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:06,022 INFO L87 Difference]: Start difference. First operand 10819 states and 16027 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:07,412 INFO L93 Difference]: Finished difference Result 20408 states and 30668 transitions. [2022-07-22 18:54:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:54:07,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-07-22 18:54:07,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:07,425 INFO L225 Difference]: With dead ends: 20408 [2022-07-22 18:54:07,426 INFO L226 Difference]: Without dead ends: 10819 [2022-07-22 18:54:07,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:54:07,441 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 840 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:07,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 350 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:54:07,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2022-07-22 18:54:08,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 10819. [2022-07-22 18:54:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.4694952856350527) internal successors, (15897), 10818 states have internal predecessors, (15897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 15897 transitions. [2022-07-22 18:54:08,761 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 15897 transitions. Word has length 122 [2022-07-22 18:54:08,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:08,761 INFO L495 AbstractCegarLoop]: Abstraction has 10819 states and 15897 transitions. [2022-07-22 18:54:08,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 15897 transitions. [2022-07-22 18:54:08,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 18:54:08,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:08,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:54:08,764 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:54:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1090994532, now seen corresponding path program 1 times [2022-07-22 18:54:08,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:08,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642223955] [2022-07-22 18:54:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:08,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:08,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:08,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642223955] [2022-07-22 18:54:08,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642223955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:08,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:08,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:08,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847320801] [2022-07-22 18:54:08,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:08,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:54:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:54:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:08,823 INFO L87 Difference]: Start difference. First operand 10819 states and 15897 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:10,190 INFO L93 Difference]: Finished difference Result 20628 states and 30690 transitions. [2022-07-22 18:54:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:54:10,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-07-22 18:54:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:10,204 INFO L225 Difference]: With dead ends: 20628 [2022-07-22 18:54:10,204 INFO L226 Difference]: Without dead ends: 10819 [2022-07-22 18:54:10,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:54:10,215 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 838 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:10,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 348 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:54:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2022-07-22 18:54:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 10819. [2022-07-22 18:54:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.457478276945831) internal successors, (15767), 10818 states have internal predecessors, (15767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 15767 transitions. [2022-07-22 18:54:11,607 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 15767 transitions. Word has length 122 [2022-07-22 18:54:11,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:11,607 INFO L495 AbstractCegarLoop]: Abstraction has 10819 states and 15767 transitions. [2022-07-22 18:54:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 15767 transitions. [2022-07-22 18:54:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 18:54:11,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:11,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:11,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 18:54:11,610 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:54:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:11,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1423224191, now seen corresponding path program 1 times [2022-07-22 18:54:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:11,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678282888] [2022-07-22 18:54:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:11,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:11,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:11,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678282888] [2022-07-22 18:54:11,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678282888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:11,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:11,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:54:11,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360871006] [2022-07-22 18:54:11,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:11,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:54:11,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:11,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:54:11,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:54:11,737 INFO L87 Difference]: Start difference. First operand 10819 states and 15767 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:14,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:14,368 INFO L93 Difference]: Finished difference Result 29158 states and 43675 transitions. [2022-07-22 18:54:14,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:14,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-07-22 18:54:14,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:14,389 INFO L225 Difference]: With dead ends: 29158 [2022-07-22 18:54:14,389 INFO L226 Difference]: Without dead ends: 20026 [2022-07-22 18:54:14,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:54:14,396 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 743 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:14,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 859 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20026 states. [2022-07-22 18:54:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20026 to 20024. [2022-07-22 18:54:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20024 states, 20023 states have (on average 1.4824451880337612) internal successors, (29683), 20023 states have internal predecessors, (29683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20024 states to 20024 states and 29683 transitions. [2022-07-22 18:54:17,254 INFO L78 Accepts]: Start accepts. Automaton has 20024 states and 29683 transitions. Word has length 122 [2022-07-22 18:54:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:17,254 INFO L495 AbstractCegarLoop]: Abstraction has 20024 states and 29683 transitions. [2022-07-22 18:54:17,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:17,254 INFO L276 IsEmpty]: Start isEmpty. Operand 20024 states and 29683 transitions. [2022-07-22 18:54:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 18:54:17,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:17,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:17,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 18:54:17,258 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:54:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:17,259 INFO L85 PathProgramCache]: Analyzing trace with hash 249575419, now seen corresponding path program 1 times [2022-07-22 18:54:17,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:17,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761967643] [2022-07-22 18:54:17,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:17,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:17,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:17,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761967643] [2022-07-22 18:54:17,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761967643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:17,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:17,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:54:17,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177415778] [2022-07-22 18:54:17,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:17,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:54:17,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:17,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:54:17,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:17,365 INFO L87 Difference]: Start difference. First operand 20024 states and 29683 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:23,249 INFO L93 Difference]: Finished difference Result 54720 states and 82953 transitions. [2022-07-22 18:54:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:54:23,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-07-22 18:54:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:23,315 INFO L225 Difference]: With dead ends: 54720 [2022-07-22 18:54:23,315 INFO L226 Difference]: Without dead ends: 37372 [2022-07-22 18:54:23,335 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 [2022-07-22 18:54:23,335 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 350 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:23,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1103 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:54:23,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37372 states. [2022-07-22 18:54:29,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37372 to 37370. [2022-07-22 18:54:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37370 states, 37369 states have (on average 1.4834488479755947) internal successors, (55435), 37369 states have internal predecessors, (55435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37370 states to 37370 states and 55435 transitions. [2022-07-22 18:54:29,438 INFO L78 Accepts]: Start accepts. Automaton has 37370 states and 55435 transitions. Word has length 122 [2022-07-22 18:54:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:29,438 INFO L495 AbstractCegarLoop]: Abstraction has 37370 states and 55435 transitions. [2022-07-22 18:54:29,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 37370 states and 55435 transitions. [2022-07-22 18:54:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 18:54:29,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:29,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:29,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 18:54:29,442 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:54:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1986267249, now seen corresponding path program 1 times [2022-07-22 18:54:29,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:29,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487956073] [2022-07-22 18:54:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:29,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:30,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:30,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487956073] [2022-07-22 18:54:30,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487956073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:30,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:30,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 18:54:30,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407752034] [2022-07-22 18:54:30,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:30,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 18:54:30,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:30,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 18:54:30,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:54:30,061 INFO L87 Difference]: Start difference. First operand 37370 states and 55435 transitions. Second operand has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:55:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:55:07,069 INFO L93 Difference]: Finished difference Result 185757 states and 278197 transitions. [2022-07-22 18:55:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 18:55:07,070 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-07-22 18:55:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:55:07,460 INFO L225 Difference]: With dead ends: 185757 [2022-07-22 18:55:07,460 INFO L226 Difference]: Without dead ends: 170003 [2022-07-22 18:55:07,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 18:55:07,519 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 2863 mSDsluCounter, 8475 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 9190 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:55:07,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2863 Valid, 9190 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 18:55:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170003 states.