./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6267d36e2eda753e26c9c989bedb16747ddf010783b33bee2d0cb2d2001d5ce --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:27:56,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:27:56,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:27:56,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:27:56,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:27:56,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:27:56,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:27:56,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:27:56,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:27:56,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:27:56,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:27:56,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:27:56,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:27:56,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:27:56,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:27:56,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:27:56,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:27:56,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:27:56,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:27:56,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:27:56,705 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:27:56,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:27:56,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:27:56,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:27:56,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:27:56,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:27:56,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:27:56,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:27:56,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:27:56,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:27:56,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:27:56,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:27:56,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:27:56,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:27:56,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:27:56,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:27:56,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:27:56,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:27:56,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:27:56,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:27:56,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:27:56,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:27:56,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:27:56,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:27:56,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:27:56,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:27:56,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:27:56,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:27:56,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:27:56,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:27:56,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:27:56,751 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:27:56,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:27:56,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:27:56,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:27:56,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:27:56,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:27:56,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:27:56,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:27:56,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:27:56,753 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:27:56,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:27:56,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:27:56,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:27:56,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:27:56,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:27:56,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:27:56,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:27:56,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:27:56,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:27:56,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:27:56,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:27:56,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:27:56,755 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:27:56,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:27:56,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:27:56,755 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6267d36e2eda753e26c9c989bedb16747ddf010783b33bee2d0cb2d2001d5ce [2022-07-21 05:27:57,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:27:57,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:27:57,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:27:57,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:27:57,070 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:27:57,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-07-21 05:27:57,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1ee9e8f/3dfc748264104265922c75725d9b696f/FLAG40f676356 [2022-07-21 05:27:57,526 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:27:57,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-07-21 05:27:57,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1ee9e8f/3dfc748264104265922c75725d9b696f/FLAG40f676356 [2022-07-21 05:27:57,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1ee9e8f/3dfc748264104265922c75725d9b696f [2022-07-21 05:27:57,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:27:57,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:27:57,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:27:57,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:27:57,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:27:57,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118a08ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57, skipping insertion in model container [2022-07-21 05:27:57,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:27:57,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:27:57,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c[12747,12760] [2022-07-21 05:27:57,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:27:57,800 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:27:57,851 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c[12747,12760] [2022-07-21 05:27:57,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:27:57,862 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:27:57,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57 WrapperNode [2022-07-21 05:27:57,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:27:57,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:27:57,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:27:57,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:27:57,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,921 INFO L137 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 465 [2022-07-21 05:27:57,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:27:57,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:27:57,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:27:57,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:27:57,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:27:57,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:27:57,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:27:57,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:27:57,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (1/1) ... [2022-07-21 05:27:57,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:27:57,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:27:58,029 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) [2022-07-21 05:27:58,035 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 [2022-07-21 05:27:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:27:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:27:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:27:58,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:27:58,145 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:27:58,146 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:27:58,577 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:27:58,582 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:27:58,583 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 05:27:58,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:27:58 BoogieIcfgContainer [2022-07-21 05:27:58,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:27:58,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:27:58,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:27:58,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:27:58,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:27:57" (1/3) ... [2022-07-21 05:27:58,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e41c275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:27:58, skipping insertion in model container [2022-07-21 05:27:58,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:27:57" (2/3) ... [2022-07-21 05:27:58,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e41c275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:27:58, skipping insertion in model container [2022-07-21 05:27:58,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:27:58" (3/3) ... [2022-07-21 05:27:58,589 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-07-21 05:27:58,609 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:27:58,609 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:27:58,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:27:58,658 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@12ff39d1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@48f59173 [2022-07-21 05:27:58,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:27:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 05:27:58,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:27:58,676 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] [2022-07-21 05:27:58,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:27:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:27:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash -479003881, now seen corresponding path program 1 times [2022-07-21 05:27:58,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:27:58,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171814220] [2022-07-21 05:27:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:27:58,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:27:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:27:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:27:58,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:27:58,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171814220] [2022-07-21 05:27:58,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171814220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:27:58,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:27:58,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 05:27:58,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312421777] [2022-07-21 05:27:58,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:27:58,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 05:27:58,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:27:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 05:27:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:27:58,940 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:58,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:27:58,970 INFO L93 Difference]: Finished difference Result 221 states and 376 transitions. [2022-07-21 05:27:58,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 05:27:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-07-21 05:27:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:27:58,982 INFO L225 Difference]: With dead ends: 221 [2022-07-21 05:27:58,982 INFO L226 Difference]: Without dead ends: 133 [2022-07-21 05:27:58,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:27:58,988 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:27:58,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:27:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-21 05:27:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-07-21 05:27:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 132 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 229 transitions. [2022-07-21 05:27:59,030 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 229 transitions. Word has length 37 [2022-07-21 05:27:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:27:59,031 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 229 transitions. [2022-07-21 05:27:59,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 229 transitions. [2022-07-21 05:27:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 05:27:59,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:27:59,036 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] [2022-07-21 05:27:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:27:59,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:27:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:27:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1296652331, now seen corresponding path program 1 times [2022-07-21 05:27:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:27:59,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174260900] [2022-07-21 05:27:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:27:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:27:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:27:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:27:59,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:27:59,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174260900] [2022-07-21 05:27:59,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174260900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:27:59,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:27:59,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:27:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600004531] [2022-07-21 05:27:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:27:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:27:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:27:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:27:59,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:27:59,136 INFO L87 Difference]: Start difference. First operand 133 states and 229 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:27:59,227 INFO L93 Difference]: Finished difference Result 295 states and 499 transitions. [2022-07-21 05:27:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:27:59,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-07-21 05:27:59,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:27:59,229 INFO L225 Difference]: With dead ends: 295 [2022-07-21 05:27:59,229 INFO L226 Difference]: Without dead ends: 212 [2022-07-21 05:27:59,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:27:59,230 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 135 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:27:59,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 871 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:27:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-21 05:27:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 133. [2022-07-21 05:27:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.553030303030303) internal successors, (205), 132 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 205 transitions. [2022-07-21 05:27:59,237 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 205 transitions. Word has length 37 [2022-07-21 05:27:59,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:27:59,237 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 205 transitions. [2022-07-21 05:27:59,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 205 transitions. [2022-07-21 05:27:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 05:27:59,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:27:59,238 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] [2022-07-21 05:27:59,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:27:59,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:27:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:27:59,239 INFO L85 PathProgramCache]: Analyzing trace with hash 141893846, now seen corresponding path program 1 times [2022-07-21 05:27:59,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:27:59,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24270152] [2022-07-21 05:27:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:27:59,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:27:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:27:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:27:59,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:27:59,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24270152] [2022-07-21 05:27:59,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24270152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:27:59,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:27:59,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:27:59,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349396264] [2022-07-21 05:27:59,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:27:59,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:27:59,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:27:59,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:27:59,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:27:59,340 INFO L87 Difference]: Start difference. First operand 133 states and 205 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:27:59,380 INFO L93 Difference]: Finished difference Result 281 states and 453 transitions. [2022-07-21 05:27:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:27:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-07-21 05:27:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:27:59,382 INFO L225 Difference]: With dead ends: 281 [2022-07-21 05:27:59,385 INFO L226 Difference]: Without dead ends: 202 [2022-07-21 05:27:59,385 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 [2022-07-21 05:27:59,387 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 107 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:27:59,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 372 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:27:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-21 05:27:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2022-07-21 05:27:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.5778894472361809) internal successors, (314), 199 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 314 transitions. [2022-07-21 05:27:59,396 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 314 transitions. Word has length 60 [2022-07-21 05:27:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:27:59,396 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 314 transitions. [2022-07-21 05:27:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 314 transitions. [2022-07-21 05:27:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:27:59,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:27:59,397 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] [2022-07-21 05:27:59,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:27:59,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:27:59,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:27:59,398 INFO L85 PathProgramCache]: Analyzing trace with hash -653639893, now seen corresponding path program 1 times [2022-07-21 05:27:59,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:27:59,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579040066] [2022-07-21 05:27:59,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:27:59,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:27:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:27:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:27:59,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:27:59,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579040066] [2022-07-21 05:27:59,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579040066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:27:59,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:27:59,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:27:59,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610665910] [2022-07-21 05:27:59,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:27:59,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:27:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:27:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:27:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:27:59,451 INFO L87 Difference]: Start difference. First operand 200 states and 314 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:27:59,471 INFO L93 Difference]: Finished difference Result 476 states and 770 transitions. [2022-07-21 05:27:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:27:59,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-21 05:27:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:27:59,473 INFO L225 Difference]: With dead ends: 476 [2022-07-21 05:27:59,473 INFO L226 Difference]: Without dead ends: 330 [2022-07-21 05:27:59,474 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 [2022-07-21 05:27:59,474 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 109 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:27:59,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 380 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:27:59,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-21 05:27:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2022-07-21 05:27:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.6055045871559632) internal successors, (525), 327 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 525 transitions. [2022-07-21 05:27:59,508 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 525 transitions. Word has length 62 [2022-07-21 05:27:59,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:27:59,508 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 525 transitions. [2022-07-21 05:27:59,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 525 transitions. [2022-07-21 05:27:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 05:27:59,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:27:59,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:27:59,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:27:59,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:27:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:27:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1628052192, now seen corresponding path program 1 times [2022-07-21 05:27:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:27:59,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339113030] [2022-07-21 05:27:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:27:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:27:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:27:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:27:59,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:27:59,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339113030] [2022-07-21 05:27:59,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339113030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:27:59,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:27:59,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:27:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156020670] [2022-07-21 05:27:59,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:27:59,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:27:59,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:27:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:27:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:27:59,605 INFO L87 Difference]: Start difference. First operand 328 states and 525 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:27:59,622 INFO L93 Difference]: Finished difference Result 844 states and 1375 transitions. [2022-07-21 05:27:59,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:27:59,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-21 05:27:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:27:59,624 INFO L225 Difference]: With dead ends: 844 [2022-07-21 05:27:59,624 INFO L226 Difference]: Without dead ends: 570 [2022-07-21 05:27:59,625 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 [2022-07-21 05:27:59,626 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 103 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 381 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 [2022-07-21 05:27:59,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 381 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:27:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-07-21 05:27:59,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 568. [2022-07-21 05:27:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 1.617283950617284) internal successors, (917), 567 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 917 transitions. [2022-07-21 05:27:59,647 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 917 transitions. Word has length 64 [2022-07-21 05:27:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:27:59,647 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 917 transitions. [2022-07-21 05:27:59,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,648 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 917 transitions. [2022-07-21 05:27:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 05:27:59,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:27:59,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:27:59,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:27:59,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:27:59,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:27:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1698900981, now seen corresponding path program 1 times [2022-07-21 05:27:59,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:27:59,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442464016] [2022-07-21 05:27:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:27:59,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:27:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:27:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:27:59,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:27:59,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442464016] [2022-07-21 05:27:59,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442464016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:27:59,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:27:59,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:27:59,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706940069] [2022-07-21 05:27:59,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:27:59,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:27:59,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:27:59,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:27:59,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:27:59,712 INFO L87 Difference]: Start difference. First operand 568 states and 917 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:27:59,841 INFO L93 Difference]: Finished difference Result 2444 states and 4039 transitions. [2022-07-21 05:27:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:27:59,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-21 05:27:59,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:27:59,851 INFO L225 Difference]: With dead ends: 2444 [2022-07-21 05:27:59,851 INFO L226 Difference]: Without dead ends: 1930 [2022-07-21 05:27:59,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:27:59,858 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 863 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:27:59,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1352 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:27:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2022-07-21 05:27:59,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1017. [2022-07-21 05:27:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 1.6289370078740157) internal successors, (1655), 1016 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1655 transitions. [2022-07-21 05:27:59,917 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1655 transitions. Word has length 66 [2022-07-21 05:27:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:27:59,918 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1655 transitions. [2022-07-21 05:27:59,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:27:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1655 transitions. [2022-07-21 05:27:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 05:27:59,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:27:59,922 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] [2022-07-21 05:27:59,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:27:59,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:27:59,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:27:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash -796509765, now seen corresponding path program 1 times [2022-07-21 05:27:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:27:59,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842130233] [2022-07-21 05:27:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:27:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:27:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842130233] [2022-07-21 05:28:00,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842130233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:00,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:00,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:28:00,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380376786] [2022-07-21 05:28:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:00,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:28:00,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:00,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:28:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:28:00,030 INFO L87 Difference]: Start difference. First operand 1017 states and 1655 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:00,112 INFO L93 Difference]: Finished difference Result 2966 states and 4892 transitions. [2022-07-21 05:28:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:28:00,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-21 05:28:00,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:00,121 INFO L225 Difference]: With dead ends: 2966 [2022-07-21 05:28:00,121 INFO L226 Difference]: Without dead ends: 2003 [2022-07-21 05:28:00,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:28:00,123 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 385 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:00,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 678 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2022-07-21 05:28:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1501. [2022-07-21 05:28:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 1.6353333333333333) internal successors, (2453), 1500 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2453 transitions. [2022-07-21 05:28:00,162 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2453 transitions. Word has length 67 [2022-07-21 05:28:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:00,162 INFO L495 AbstractCegarLoop]: Abstraction has 1501 states and 2453 transitions. [2022-07-21 05:28:00,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2453 transitions. [2022-07-21 05:28:00,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 05:28:00,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:00,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:00,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:28:00,164 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:00,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:00,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2022785868, now seen corresponding path program 1 times [2022-07-21 05:28:00,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:00,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076906694] [2022-07-21 05:28:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:00,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:00,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:00,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076906694] [2022-07-21 05:28:00,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076906694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:00,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:00,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:28:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815530212] [2022-07-21 05:28:00,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:00,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:28:00,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:28:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:28:00,201 INFO L87 Difference]: Start difference. First operand 1501 states and 2453 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:00,248 INFO L93 Difference]: Finished difference Result 3316 states and 5473 transitions. [2022-07-21 05:28:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:28:00,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-21 05:28:00,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:00,255 INFO L225 Difference]: With dead ends: 3316 [2022-07-21 05:28:00,255 INFO L226 Difference]: Without dead ends: 2278 [2022-07-21 05:28:00,257 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 [2022-07-21 05:28:00,257 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 116 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:00,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2022-07-21 05:28:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2276. [2022-07-21 05:28:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2275 states have (on average 1.6360439560439561) internal successors, (3722), 2275 states have internal predecessors, (3722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3722 transitions. [2022-07-21 05:28:00,325 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3722 transitions. Word has length 68 [2022-07-21 05:28:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:00,326 INFO L495 AbstractCegarLoop]: Abstraction has 2276 states and 3722 transitions. [2022-07-21 05:28:00,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3722 transitions. [2022-07-21 05:28:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 05:28:00,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:00,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:00,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:28:00,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:00,328 INFO L85 PathProgramCache]: Analyzing trace with hash -675827220, now seen corresponding path program 1 times [2022-07-21 05:28:00,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:00,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913278225] [2022-07-21 05:28:00,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:00,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:00,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:00,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913278225] [2022-07-21 05:28:00,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913278225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:00,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:00,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:28:00,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213061018] [2022-07-21 05:28:00,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:00,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:28:00,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:28:00,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:28:00,364 INFO L87 Difference]: Start difference. First operand 2276 states and 3722 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:00,501 INFO L93 Difference]: Finished difference Result 6680 states and 10988 transitions. [2022-07-21 05:28:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:28:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-21 05:28:00,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:00,514 INFO L225 Difference]: With dead ends: 6680 [2022-07-21 05:28:00,515 INFO L226 Difference]: Without dead ends: 4460 [2022-07-21 05:28:00,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:28:00,518 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 384 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:00,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 626 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2022-07-21 05:28:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 3349. [2022-07-21 05:28:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3348 states have (on average 1.6314217443249701) internal successors, (5462), 3348 states have internal predecessors, (5462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5462 transitions. [2022-07-21 05:28:00,626 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5462 transitions. Word has length 68 [2022-07-21 05:28:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:00,626 INFO L495 AbstractCegarLoop]: Abstraction has 3349 states and 5462 transitions. [2022-07-21 05:28:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5462 transitions. [2022-07-21 05:28:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 05:28:00,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:00,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:00,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:28:00,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash -446846068, now seen corresponding path program 1 times [2022-07-21 05:28:00,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:00,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740300002] [2022-07-21 05:28:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:00,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:00,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740300002] [2022-07-21 05:28:00,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740300002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:00,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:00,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:28:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469659269] [2022-07-21 05:28:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:00,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:28:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:28:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:28:00,656 INFO L87 Difference]: Start difference. First operand 3349 states and 5462 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:00,783 INFO L93 Difference]: Finished difference Result 6705 states and 10949 transitions. [2022-07-21 05:28:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:28:00,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-21 05:28:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:00,796 INFO L225 Difference]: With dead ends: 6705 [2022-07-21 05:28:00,797 INFO L226 Difference]: Without dead ends: 4777 [2022-07-21 05:28:00,799 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 [2022-07-21 05:28:00,800 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 104 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:00,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 427 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2022-07-21 05:28:00,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4775. [2022-07-21 05:28:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4774 states have (on average 1.6206535400083788) internal successors, (7737), 4774 states have internal predecessors, (7737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 7737 transitions. [2022-07-21 05:28:00,975 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 7737 transitions. Word has length 68 [2022-07-21 05:28:00,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:00,975 INFO L495 AbstractCegarLoop]: Abstraction has 4775 states and 7737 transitions. [2022-07-21 05:28:00,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:00,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 7737 transitions. [2022-07-21 05:28:00,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 05:28:00,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:00,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:00,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:28:00,977 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:00,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1835740012, now seen corresponding path program 1 times [2022-07-21 05:28:00,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:00,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209292315] [2022-07-21 05:28:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:00,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:01,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:01,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209292315] [2022-07-21 05:28:01,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209292315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:01,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:01,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:28:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191450525] [2022-07-21 05:28:01,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:01,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:28:01,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:28:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:28:01,006 INFO L87 Difference]: Start difference. First operand 4775 states and 7737 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:01,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:01,217 INFO L93 Difference]: Finished difference Result 10402 states and 16876 transitions. [2022-07-21 05:28:01,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:28:01,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-21 05:28:01,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:01,238 INFO L225 Difference]: With dead ends: 10402 [2022-07-21 05:28:01,238 INFO L226 Difference]: Without dead ends: 7073 [2022-07-21 05:28:01,243 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 [2022-07-21 05:28:01,243 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 110 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:01,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 458 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7073 states. [2022-07-21 05:28:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7073 to 7071. [2022-07-21 05:28:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7071 states, 7070 states have (on average 1.608062234794908) internal successors, (11369), 7070 states have internal predecessors, (11369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 11369 transitions. [2022-07-21 05:28:01,541 INFO L78 Accepts]: Start accepts. Automaton has 7071 states and 11369 transitions. Word has length 68 [2022-07-21 05:28:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:01,542 INFO L495 AbstractCegarLoop]: Abstraction has 7071 states and 11369 transitions. [2022-07-21 05:28:01,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7071 states and 11369 transitions. [2022-07-21 05:28:01,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 05:28:01,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:01,543 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] [2022-07-21 05:28:01,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:28:01,543 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:01,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1060631278, now seen corresponding path program 1 times [2022-07-21 05:28:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:01,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096885202] [2022-07-21 05:28:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:01,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096885202] [2022-07-21 05:28:01,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096885202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:01,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:01,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:28:01,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822324428] [2022-07-21 05:28:01,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:28:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:28:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:28:01,581 INFO L87 Difference]: Start difference. First operand 7071 states and 11369 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:02,055 INFO L93 Difference]: Finished difference Result 22178 states and 35738 transitions. [2022-07-21 05:28:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:28:02,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-07-21 05:28:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:02,086 INFO L225 Difference]: With dead ends: 22178 [2022-07-21 05:28:02,086 INFO L226 Difference]: Without dead ends: 15187 [2022-07-21 05:28:02,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:28:02,096 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 382 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:02,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 670 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:28:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15187 states. [2022-07-21 05:28:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15187 to 11086. [2022-07-21 05:28:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11086 states, 11085 states have (on average 1.5983761840324764) internal successors, (17718), 11085 states have internal predecessors, (17718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11086 states to 11086 states and 17718 transitions. [2022-07-21 05:28:02,489 INFO L78 Accepts]: Start accepts. Automaton has 11086 states and 17718 transitions. Word has length 69 [2022-07-21 05:28:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:02,489 INFO L495 AbstractCegarLoop]: Abstraction has 11086 states and 17718 transitions. [2022-07-21 05:28:02,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 11086 states and 17718 transitions. [2022-07-21 05:28:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 05:28:02,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:02,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:02,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:28:02,491 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:02,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:02,491 INFO L85 PathProgramCache]: Analyzing trace with hash 808037418, now seen corresponding path program 1 times [2022-07-21 05:28:02,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:02,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038154831] [2022-07-21 05:28:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:02,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:02,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:02,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038154831] [2022-07-21 05:28:02,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038154831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:02,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:02,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:28:02,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850134660] [2022-07-21 05:28:02,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:02,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:28:02,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:02,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:28:02,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:28:02,555 INFO L87 Difference]: Start difference. First operand 11086 states and 17718 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:02,909 INFO L93 Difference]: Finished difference Result 22094 states and 35327 transitions. [2022-07-21 05:28:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:28:02,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-21 05:28:02,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:02,928 INFO L225 Difference]: With dead ends: 22094 [2022-07-21 05:28:02,928 INFO L226 Difference]: Without dead ends: 11088 [2022-07-21 05:28:02,941 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 [2022-07-21 05:28:02,942 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 283 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:02,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 543 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11088 states. [2022-07-21 05:28:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11088 to 11086. [2022-07-21 05:28:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11086 states, 11085 states have (on average 1.5870996842580063) internal successors, (17593), 11085 states have internal predecessors, (17593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11086 states to 11086 states and 17593 transitions. [2022-07-21 05:28:03,406 INFO L78 Accepts]: Start accepts. Automaton has 11086 states and 17593 transitions. Word has length 71 [2022-07-21 05:28:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:03,407 INFO L495 AbstractCegarLoop]: Abstraction has 11086 states and 17593 transitions. [2022-07-21 05:28:03,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 11086 states and 17593 transitions. [2022-07-21 05:28:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 05:28:03,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:03,408 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] [2022-07-21 05:28:03,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:28:03,409 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:03,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash 653988143, now seen corresponding path program 1 times [2022-07-21 05:28:03,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:03,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086316820] [2022-07-21 05:28:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:03,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:03,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086316820] [2022-07-21 05:28:03,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086316820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:03,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:03,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:28:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877472073] [2022-07-21 05:28:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:03,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:28:03,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:03,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:28:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:28:03,474 INFO L87 Difference]: Start difference. First operand 11086 states and 17593 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:04,076 INFO L93 Difference]: Finished difference Result 31750 states and 50527 transitions. [2022-07-21 05:28:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:28:04,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-07-21 05:28:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:04,116 INFO L225 Difference]: With dead ends: 31750 [2022-07-21 05:28:04,117 INFO L226 Difference]: Without dead ends: 20744 [2022-07-21 05:28:04,130 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 [2022-07-21 05:28:04,131 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 380 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:04,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 550 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20744 states. [2022-07-21 05:28:04,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20744 to 20742. [2022-07-21 05:28:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20742 states, 20741 states have (on average 1.5743696060942096) internal successors, (32654), 20741 states have internal predecessors, (32654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20742 states to 20742 states and 32654 transitions. [2022-07-21 05:28:04,812 INFO L78 Accepts]: Start accepts. Automaton has 20742 states and 32654 transitions. Word has length 74 [2022-07-21 05:28:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:04,813 INFO L495 AbstractCegarLoop]: Abstraction has 20742 states and 32654 transitions. [2022-07-21 05:28:04,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 20742 states and 32654 transitions. [2022-07-21 05:28:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 05:28:04,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:04,813 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] [2022-07-21 05:28:04,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:28:04,814 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:04,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1629779693, now seen corresponding path program 1 times [2022-07-21 05:28:04,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:04,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260548588] [2022-07-21 05:28:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:04,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:04,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:04,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260548588] [2022-07-21 05:28:04,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260548588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:04,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:04,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:28:04,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894293563] [2022-07-21 05:28:04,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:04,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:28:04,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:28:04,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:28:04,869 INFO L87 Difference]: Start difference. First operand 20742 states and 32654 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:06,032 INFO L93 Difference]: Finished difference Result 40553 states and 63100 transitions. [2022-07-21 05:28:06,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:28:06,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-21 05:28:06,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:06,086 INFO L225 Difference]: With dead ends: 40553 [2022-07-21 05:28:06,086 INFO L226 Difference]: Without dead ends: 40551 [2022-07-21 05:28:06,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:28:06,096 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 341 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:06,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 887 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40551 states. [2022-07-21 05:28:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40551 to 21828. [2022-07-21 05:28:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21828 states, 21827 states have (on average 1.545379575754799) internal successors, (33731), 21827 states have internal predecessors, (33731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21828 states to 21828 states and 33731 transitions. [2022-07-21 05:28:07,208 INFO L78 Accepts]: Start accepts. Automaton has 21828 states and 33731 transitions. Word has length 75 [2022-07-21 05:28:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:07,208 INFO L495 AbstractCegarLoop]: Abstraction has 21828 states and 33731 transitions. [2022-07-21 05:28:07,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 21828 states and 33731 transitions. [2022-07-21 05:28:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 05:28:07,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:07,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:07,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:28:07,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:07,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1037650854, now seen corresponding path program 1 times [2022-07-21 05:28:07,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:07,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658245675] [2022-07-21 05:28:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:07,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 05:28:07,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:07,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658245675] [2022-07-21 05:28:07,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658245675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:07,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:07,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:28:07,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756207731] [2022-07-21 05:28:07,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:07,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:28:07,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:28:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:28:07,264 INFO L87 Difference]: Start difference. First operand 21828 states and 33731 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:08,530 INFO L93 Difference]: Finished difference Result 53616 states and 83123 transitions. [2022-07-21 05:28:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:28:08,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-21 05:28:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:08,603 INFO L225 Difference]: With dead ends: 53616 [2022-07-21 05:28:08,603 INFO L226 Difference]: Without dead ends: 43014 [2022-07-21 05:28:08,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:28:08,628 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 489 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:08,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 835 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:08,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43014 states. [2022-07-21 05:28:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43014 to 33572. [2022-07-21 05:28:10,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33572 states, 33571 states have (on average 1.5427303327276518) internal successors, (51791), 33571 states have internal predecessors, (51791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33572 states to 33572 states and 51791 transitions. [2022-07-21 05:28:10,256 INFO L78 Accepts]: Start accepts. Automaton has 33572 states and 51791 transitions. Word has length 101 [2022-07-21 05:28:10,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:10,256 INFO L495 AbstractCegarLoop]: Abstraction has 33572 states and 51791 transitions. [2022-07-21 05:28:10,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 33572 states and 51791 transitions. [2022-07-21 05:28:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 05:28:10,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:10,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:10,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 05:28:10,259 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash 787684506, now seen corresponding path program 1 times [2022-07-21 05:28:10,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:10,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968968917] [2022-07-21 05:28:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:10,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 05:28:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:10,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968968917] [2022-07-21 05:28:10,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968968917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:10,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:10,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:28:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049637286] [2022-07-21 05:28:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:10,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:28:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:28:10,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:28:10,303 INFO L87 Difference]: Start difference. First operand 33572 states and 51791 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:11,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:11,807 INFO L93 Difference]: Finished difference Result 60140 states and 93241 transitions. [2022-07-21 05:28:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:28:11,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2022-07-21 05:28:11,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:11,885 INFO L225 Difference]: With dead ends: 60140 [2022-07-21 05:28:11,886 INFO L226 Difference]: Without dead ends: 49798 [2022-07-21 05:28:11,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:28:11,906 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 492 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:11,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 948 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49798 states. [2022-07-21 05:28:13,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49798 to 45552. [2022-07-21 05:28:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45552 states, 45551 states have (on average 1.5440056200742025) internal successors, (70331), 45551 states have internal predecessors, (70331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45552 states to 45552 states and 70331 transitions. [2022-07-21 05:28:13,906 INFO L78 Accepts]: Start accepts. Automaton has 45552 states and 70331 transitions. Word has length 101 [2022-07-21 05:28:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:13,906 INFO L495 AbstractCegarLoop]: Abstraction has 45552 states and 70331 transitions. [2022-07-21 05:28:13,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:13,906 INFO L276 IsEmpty]: Start isEmpty. Operand 45552 states and 70331 transitions. [2022-07-21 05:28:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 05:28:13,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:13,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:13,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 05:28:13,910 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:13,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:13,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1224696710, now seen corresponding path program 1 times [2022-07-21 05:28:13,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:13,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050978921] [2022-07-21 05:28:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:13,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:28:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:13,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050978921] [2022-07-21 05:28:13,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050978921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:13,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:13,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:28:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197189796] [2022-07-21 05:28:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:13,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:28:13,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:28:13,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:28:13,957 INFO L87 Difference]: Start difference. First operand 45552 states and 70331 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:15,735 INFO L93 Difference]: Finished difference Result 64276 states and 99649 transitions. [2022-07-21 05:28:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:28:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-21 05:28:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:15,826 INFO L225 Difference]: With dead ends: 64276 [2022-07-21 05:28:15,827 INFO L226 Difference]: Without dead ends: 53934 [2022-07-21 05:28:15,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:28:15,845 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 487 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:15,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 918 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53934 states. [2022-07-21 05:28:17,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53934 to 52232. [2022-07-21 05:28:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52232 states, 52231 states have (on average 1.5456529647144417) internal successors, (80731), 52231 states have internal predecessors, (80731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52232 states to 52232 states and 80731 transitions. [2022-07-21 05:28:18,042 INFO L78 Accepts]: Start accepts. Automaton has 52232 states and 80731 transitions. Word has length 101 [2022-07-21 05:28:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:18,042 INFO L495 AbstractCegarLoop]: Abstraction has 52232 states and 80731 transitions. [2022-07-21 05:28:18,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 52232 states and 80731 transitions. [2022-07-21 05:28:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 05:28:18,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:18,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:18,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 05:28:18,047 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash 269729270, now seen corresponding path program 1 times [2022-07-21 05:28:18,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:18,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476603876] [2022-07-21 05:28:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:18,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 05:28:18,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:18,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476603876] [2022-07-21 05:28:18,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476603876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:18,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:18,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:28:18,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006380530] [2022-07-21 05:28:18,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:18,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:28:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:28:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:28:18,086 INFO L87 Difference]: Start difference. First operand 52232 states and 80731 transitions. 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) [2022-07-21 05:28:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:20,627 INFO L93 Difference]: Finished difference Result 85235 states and 132380 transitions. [2022-07-21 05:28:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:28:20,628 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 102 [2022-07-21 05:28:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:20,740 INFO L225 Difference]: With dead ends: 85235 [2022-07-21 05:28:20,740 INFO L226 Difference]: Without dead ends: 67849 [2022-07-21 05:28:20,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:28:20,759 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 216 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:20,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 632 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67849 states. [2022-07-21 05:28:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67849 to 66149. [2022-07-21 05:28:23,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66149 states, 66148 states have (on average 1.5457005502811876) internal successors, (102245), 66148 states have internal predecessors, (102245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66149 states to 66149 states and 102245 transitions. [2022-07-21 05:28:23,368 INFO L78 Accepts]: Start accepts. Automaton has 66149 states and 102245 transitions. Word has length 102 [2022-07-21 05:28:23,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:23,368 INFO L495 AbstractCegarLoop]: Abstraction has 66149 states and 102245 transitions. [2022-07-21 05:28:23,368 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) [2022-07-21 05:28:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 66149 states and 102245 transitions. [2022-07-21 05:28:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 05:28:23,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:23,371 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:23,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 05:28:23,371 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:23,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash 692431096, now seen corresponding path program 1 times [2022-07-21 05:28:23,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:23,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271606176] [2022-07-21 05:28:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:23,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 05:28:23,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:23,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271606176] [2022-07-21 05:28:23,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271606176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:23,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:23,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:28:23,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125303825] [2022-07-21 05:28:23,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:23,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:28:23,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:28:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:28:23,402 INFO L87 Difference]: Start difference. First operand 66149 states and 102245 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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) [2022-07-21 05:28:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:28:27,412 INFO L93 Difference]: Finished difference Result 143003 states and 221693 transitions. [2022-07-21 05:28:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:28:27,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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 102 [2022-07-21 05:28:27,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:28:27,626 INFO L225 Difference]: With dead ends: 143003 [2022-07-21 05:28:27,627 INFO L226 Difference]: Without dead ends: 111837 [2022-07-21 05:28:27,709 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 [2022-07-21 05:28:27,710 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 92 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:28:27,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 373 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:28:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111837 states. [2022-07-21 05:28:32,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111837 to 111559. [2022-07-21 05:28:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111559 states, 111558 states have (on average 1.5450617615948654) internal successors, (172364), 111558 states have internal predecessors, (172364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:28:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111559 states to 111559 states and 172364 transitions. [2022-07-21 05:28:32,648 INFO L78 Accepts]: Start accepts. Automaton has 111559 states and 172364 transitions. Word has length 102 [2022-07-21 05:28:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:28:32,648 INFO L495 AbstractCegarLoop]: Abstraction has 111559 states and 172364 transitions. [2022-07-21 05:28:32,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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) [2022-07-21 05:28:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 111559 states and 172364 transitions. [2022-07-21 05:28:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 05:28:32,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:28:32,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:28:32,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 05:28:32,652 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:28:32,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:28:32,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1579286360, now seen corresponding path program 1 times [2022-07-21 05:28:32,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:28:32,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30840919] [2022-07-21 05:28:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:28:32,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:28:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:28:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:28:32,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:28:32,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30840919] [2022-07-21 05:28:32,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30840919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:28:32,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:28:32,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:28:32,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177415857] [2022-07-21 05:28:32,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:28:32,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:28:32,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:28:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:28:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:28:32,680 INFO L87 Difference]: Start difference. First operand 111559 states and 172364 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)