./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label22.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 d43cfdc29fde06b3f3db8e8550743c4a543837bf593795daae105a797554d3b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:26:16,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:26:16,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:26:16,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:26:16,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:26:16,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:26:16,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:26:16,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:26:16,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:26:16,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:26:16,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:26:16,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:26:16,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:26:16,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:26:16,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:26:16,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:26:16,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:26:16,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:26:16,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:26:16,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:26:16,692 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:26:16,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:26:16,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:26:16,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:26:16,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:26:16,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:26:16,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:26:16,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:26:16,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:26:16,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:26:16,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:26:16,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:26:16,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:26:16,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:26:16,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:26:16,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:26:16,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:26:16,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:26:16,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:26:16,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:26:16,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:26:16,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:26:16,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:26:16,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:26:16,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:26:16,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:26:16,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:26:16,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:26:16,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:26:16,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:26:16,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:26:16,757 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:26:16,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:26:16,758 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:26:16,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:26:16,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:26:16,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:26:16,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:26:16,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:26:16,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:26:16,759 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:26:16,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:26:16,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:26:16,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:26:16,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:26:16,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:26:16,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:26:16,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:26:16,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:26:16,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:26:16,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:26:16,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:26:16,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:26:16,761 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:26:16,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:26:16,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:26:16,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d43cfdc29fde06b3f3db8e8550743c4a543837bf593795daae105a797554d3b1 [2022-07-22 12:26:16,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:26:16,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:26:16,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:26:16,994 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:26:16,995 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:26:16,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label22.c [2022-07-22 12:26:17,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fc087371/ac74cf15c3864585b462fd089ce3ea6c/FLAG305fd1be9 [2022-07-22 12:26:17,621 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:26:17,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label22.c [2022-07-22 12:26:17,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fc087371/ac74cf15c3864585b462fd089ce3ea6c/FLAG305fd1be9 [2022-07-22 12:26:18,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fc087371/ac74cf15c3864585b462fd089ce3ea6c [2022-07-22 12:26:18,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:26:18,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:26:18,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:26:18,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:26:18,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:26:18,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:26:18" (1/1) ... [2022-07-22 12:26:18,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c29672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:18, skipping insertion in model container [2022-07-22 12:26:18,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:26:18" (1/1) ... [2022-07-22 12:26:18,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:26:18,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:26:18,334 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/eca-rers2012/Problem12_label22.c[7880,7893] [2022-07-22 12:26:18,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:26:18,906 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:26:18,933 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/eca-rers2012/Problem12_label22.c[7880,7893] [2022-07-22 12:26:19,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:26:19,259 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:26:19,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19 WrapperNode [2022-07-22 12:26:19,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:26:19,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:26:19,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:26:19,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:26:19,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,543 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-22 12:26:19,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:26:19,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:26:19,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:26:19,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:26:19,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:26:19,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:26:19,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:26:19,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:26:19,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (1/1) ... [2022-07-22 12:26:19,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:26:19,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:26:19,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 12:26:20,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 12:26:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:26:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:26:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:26:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:26:20,125 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:26:20,134 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:26:23,040 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:26:23,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:26:23,051 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:26:23,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:26:23 BoogieIcfgContainer [2022-07-22 12:26:23,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:26:23,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:26:23,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:26:23,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:26:23,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:26:18" (1/3) ... [2022-07-22 12:26:23,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac0b76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:26:23, skipping insertion in model container [2022-07-22 12:26:23,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:26:19" (2/3) ... [2022-07-22 12:26:23,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac0b76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:26:23, skipping insertion in model container [2022-07-22 12:26:23,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:26:23" (3/3) ... [2022-07-22 12:26:23,059 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2022-07-22 12:26:23,070 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:26:23,070 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:26:23,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:26:23,128 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@149b7221, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d077ef7 [2022-07-22 12:26:23,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:26:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 12:26:23,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:23,146 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] [2022-07-22 12:26:23,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:23,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:23,150 INFO L85 PathProgramCache]: Analyzing trace with hash -107486446, now seen corresponding path program 1 times [2022-07-22 12:26:23,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:23,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738053333] [2022-07-22 12:26:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:23,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:26:23,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:23,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738053333] [2022-07-22 12:26:23,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738053333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:23,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:23,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623861913] [2022-07-22 12:26:23,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:23,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:26:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:23,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:26:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:26:23,389 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 16.0) 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) [2022-07-22 12:26:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:28,787 INFO L93 Difference]: Finished difference Result 3142 states and 6130 transitions. [2022-07-22 12:26:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:26:28,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) 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 [2022-07-22 12:26:28,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:28,837 INFO L225 Difference]: With dead ends: 3142 [2022-07-22 12:26:28,837 INFO L226 Difference]: Without dead ends: 2257 [2022-07-22 12:26:28,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 12:26:28,846 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 2185 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5499 mSolverCounterSat, 1281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 6780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1281 IncrementalHoareTripleChecker+Valid, 5499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:28,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2185 Valid, 765 Invalid, 6780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1281 Valid, 5499 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-22 12:26:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-22 12:26:28,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-07-22 12:26:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5749113475177305) internal successors, (3553), 2256 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3553 transitions. [2022-07-22 12:26:28,933 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3553 transitions. Word has length 64 [2022-07-22 12:26:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:28,933 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3553 transitions. [2022-07-22 12:26:28,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) 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) [2022-07-22 12:26:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3553 transitions. [2022-07-22 12:26:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-22 12:26:28,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:28,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:26:28,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:26:28,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:28,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2079799393, now seen corresponding path program 1 times [2022-07-22 12:26:28,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:28,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590989292] [2022-07-22 12:26:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:28,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:29,095 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:26:29,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:29,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590989292] [2022-07-22 12:26:29,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590989292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:29,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:29,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:29,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535940038] [2022-07-22 12:26:29,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:29,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:26:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:29,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:26:29,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:26:29,098 INFO L87 Difference]: Start difference. First operand 2257 states and 3553 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:32,408 INFO L93 Difference]: Finished difference Result 6051 states and 9916 transitions. [2022-07-22 12:26:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:26:32,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-07-22 12:26:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:32,419 INFO L225 Difference]: With dead ends: 6051 [2022-07-22 12:26:32,420 INFO L226 Difference]: Without dead ends: 3759 [2022-07-22 12:26:32,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:26:32,424 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 705 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:32,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 688 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 12:26:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-07-22 12:26:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3008. [2022-07-22 12:26:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4319920186232125) internal successors, (4306), 3007 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4306 transitions. [2022-07-22 12:26:32,474 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4306 transitions. Word has length 135 [2022-07-22 12:26:32,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:32,475 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4306 transitions. [2022-07-22 12:26:32,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:32,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4306 transitions. [2022-07-22 12:26:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-22 12:26:32,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:32,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:26:32,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:26:32,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 357807558, now seen corresponding path program 1 times [2022-07-22 12:26:32,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:32,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091505710] [2022-07-22 12:26:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:32,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 12:26:32,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:32,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091505710] [2022-07-22 12:26:32,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091505710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:32,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:32,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:26:32,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808440377] [2022-07-22 12:26:32,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:32,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:32,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:32,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:32,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:32,723 INFO L87 Difference]: Start difference. First operand 3008 states and 4306 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:34,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:34,977 INFO L93 Difference]: Finished difference Result 8267 states and 11519 transitions. [2022-07-22 12:26:34,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:34,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 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 274 [2022-07-22 12:26:34,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:35,017 INFO L225 Difference]: With dead ends: 8267 [2022-07-22 12:26:35,018 INFO L226 Difference]: Without dead ends: 5261 [2022-07-22 12:26:35,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:35,021 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:35,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:26:35,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2022-07-22 12:26:35,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2022-07-22 12:26:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.1982889733840305) internal successors, (6303), 5260 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6303 transitions. [2022-07-22 12:26:35,117 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6303 transitions. Word has length 274 [2022-07-22 12:26:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:35,118 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 6303 transitions. [2022-07-22 12:26:35,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6303 transitions. [2022-07-22 12:26:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-22 12:26:35,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:35,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:26:35,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:26:35,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:35,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1396902847, now seen corresponding path program 1 times [2022-07-22 12:26:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:35,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436658493] [2022-07-22 12:26:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 12:26:35,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:35,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436658493] [2022-07-22 12:26:35,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436658493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:35,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:35,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:35,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792286267] [2022-07-22 12:26:35,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:35,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:26:35,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:35,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:26:35,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:26:35,297 INFO L87 Difference]: Start difference. First operand 5261 states and 6303 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:38,371 INFO L93 Difference]: Finished difference Result 12061 states and 15068 transitions. [2022-07-22 12:26:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:26:38,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 276 [2022-07-22 12:26:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:38,400 INFO L225 Difference]: With dead ends: 12061 [2022-07-22 12:26:38,400 INFO L226 Difference]: Without dead ends: 7516 [2022-07-22 12:26:38,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:26:38,414 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 776 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:38,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 327 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 12:26:38,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2022-07-22 12:26:38,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 7514. [2022-07-22 12:26:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 1.1812857713296951) internal successors, (8875), 7513 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:38,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 8875 transitions. [2022-07-22 12:26:38,578 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 8875 transitions. Word has length 276 [2022-07-22 12:26:38,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:38,579 INFO L495 AbstractCegarLoop]: Abstraction has 7514 states and 8875 transitions. [2022-07-22 12:26:38,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:38,580 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 8875 transitions. [2022-07-22 12:26:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-22 12:26:38,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:38,583 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:26:38,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 12:26:38,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:38,586 INFO L85 PathProgramCache]: Analyzing trace with hash -522510421, now seen corresponding path program 1 times [2022-07-22 12:26:38,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:38,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989302413] [2022-07-22 12:26:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:38,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 12:26:38,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:38,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989302413] [2022-07-22 12:26:38,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989302413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:38,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:38,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:38,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706370643] [2022-07-22 12:26:38,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:38,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:38,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:38,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:38,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:38,750 INFO L87 Difference]: Start difference. First operand 7514 states and 8875 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:40,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:40,636 INFO L93 Difference]: Finished difference Result 16528 states and 20146 transitions. [2022-07-22 12:26:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:40,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 353 [2022-07-22 12:26:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:40,692 INFO L225 Difference]: With dead ends: 16528 [2022-07-22 12:26:40,693 INFO L226 Difference]: Without dead ends: 9767 [2022-07-22 12:26:40,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:40,715 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 826 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 3018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:40,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 139 Invalid, 3018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 12:26:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-07-22 12:26:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-07-22 12:26:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.207352037681753) internal successors, (11791), 9766 states have internal predecessors, (11791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 11791 transitions. [2022-07-22 12:26:40,984 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 11791 transitions. Word has length 353 [2022-07-22 12:26:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:40,985 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 11791 transitions. [2022-07-22 12:26:40,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 11791 transitions. [2022-07-22 12:26:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-07-22 12:26:40,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:40,992 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:26:40,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:26:40,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:40,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1140799087, now seen corresponding path program 1 times [2022-07-22 12:26:40,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:40,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5279960] [2022-07-22 12:26:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:40,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 12:26:41,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:41,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5279960] [2022-07-22 12:26:41,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5279960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:41,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:41,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941799166] [2022-07-22 12:26:41,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:41,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:41,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:41,129 INFO L87 Difference]: Start difference. First operand 9767 states and 11791 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:43,471 INFO L93 Difference]: Finished difference Result 21034 states and 25744 transitions. [2022-07-22 12:26:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:43,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 377 [2022-07-22 12:26:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:43,488 INFO L225 Difference]: With dead ends: 21034 [2022-07-22 12:26:43,489 INFO L226 Difference]: Without dead ends: 12020 [2022-07-22 12:26:43,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:43,499 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:43,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 105 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:26:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2022-07-22 12:26:43,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 12020. [2022-07-22 12:26:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.1926116981446044) internal successors, (14334), 12019 states have internal predecessors, (14334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14334 transitions. [2022-07-22 12:26:43,611 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14334 transitions. Word has length 377 [2022-07-22 12:26:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:43,612 INFO L495 AbstractCegarLoop]: Abstraction has 12020 states and 14334 transitions. [2022-07-22 12:26:43,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14334 transitions. [2022-07-22 12:26:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-07-22 12:26:43,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:43,616 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:26:43,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 12:26:43,616 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:43,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:43,617 INFO L85 PathProgramCache]: Analyzing trace with hash -370054870, now seen corresponding path program 1 times [2022-07-22 12:26:43,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:43,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863126694] [2022-07-22 12:26:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:43,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 12:26:43,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:43,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863126694] [2022-07-22 12:26:43,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863126694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:43,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:43,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:43,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742342980] [2022-07-22 12:26:43,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:43,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:43,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:43,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:43,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:43,902 INFO L87 Difference]: Start difference. First operand 12020 states and 14334 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:46,598 INFO L93 Difference]: Finished difference Result 33801 states and 40725 transitions. [2022-07-22 12:26:46,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:46,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 391 [2022-07-22 12:26:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:46,632 INFO L225 Difference]: With dead ends: 33801 [2022-07-22 12:26:46,633 INFO L226 Difference]: Without dead ends: 22534 [2022-07-22 12:26:46,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:46,648 INFO L413 NwaCegarLoop]: 1322 mSDtfsCounter, 636 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:46,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1329 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:26:46,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2022-07-22 12:26:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 21783. [2022-07-22 12:26:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 21782 states have (on average 1.1774400881461757) internal successors, (25647), 21782 states have internal predecessors, (25647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 25647 transitions. [2022-07-22 12:26:46,864 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 25647 transitions. Word has length 391 [2022-07-22 12:26:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:46,864 INFO L495 AbstractCegarLoop]: Abstraction has 21783 states and 25647 transitions. [2022-07-22 12:26:46,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:46,865 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 25647 transitions. [2022-07-22 12:26:46,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-22 12:26:46,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:46,874 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:26:46,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:26:46,875 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:46,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1540892133, now seen corresponding path program 1 times [2022-07-22 12:26:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:46,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863438191] [2022-07-22 12:26:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:46,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 86 proven. 99 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-22 12:26:47,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:47,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863438191] [2022-07-22 12:26:47,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863438191] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:26:47,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643835015] [2022-07-22 12:26:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:47,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:26:47,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:26:47,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:26:47,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:26:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:47,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:26:47,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:26:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-22 12:26:47,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:26:47,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643835015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:47,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:26:47,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-22 12:26:47,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647311751] [2022-07-22 12:26:47,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:47,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:47,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:47,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:26:47,445 INFO L87 Difference]: Start difference. First operand 21783 states and 25647 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:49,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:49,952 INFO L93 Difference]: Finished difference Result 59335 states and 70698 transitions. [2022-07-22 12:26:49,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:49,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 392 [2022-07-22 12:26:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:50,052 INFO L225 Difference]: With dead ends: 59335 [2022-07-22 12:26:50,052 INFO L226 Difference]: Without dead ends: 38305 [2022-07-22 12:26:50,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:26:50,108 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 698 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:50,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1377 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:26:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38305 states. [2022-07-22 12:26:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38305 to 36052. [2022-07-22 12:26:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36052 states, 36051 states have (on average 1.1419100718426674) internal successors, (41167), 36051 states have internal predecessors, (41167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 41167 transitions. [2022-07-22 12:26:50,546 INFO L78 Accepts]: Start accepts. Automaton has 36052 states and 41167 transitions. Word has length 392 [2022-07-22 12:26:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:50,546 INFO L495 AbstractCegarLoop]: Abstraction has 36052 states and 41167 transitions. [2022-07-22 12:26:50,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 36052 states and 41167 transitions. [2022-07-22 12:26:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-07-22 12:26:50,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:50,552 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:26:50,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 12:26:50,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:26:50,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:50,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:50,771 INFO L85 PathProgramCache]: Analyzing trace with hash -346326368, now seen corresponding path program 1 times [2022-07-22 12:26:50,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:50,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798379538] [2022-07-22 12:26:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:50,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-22 12:26:50,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:50,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798379538] [2022-07-22 12:26:50,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798379538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:50,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:50,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:50,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460679931] [2022-07-22 12:26:50,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:50,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:50,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:50,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:50,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:50,877 INFO L87 Difference]: Start difference. First operand 36052 states and 41167 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:53,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:53,181 INFO L93 Difference]: Finished difference Result 87873 states and 101087 transitions. [2022-07-22 12:26:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:53,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 395 [2022-07-22 12:26:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:53,446 INFO L225 Difference]: With dead ends: 87873 [2022-07-22 12:26:53,446 INFO L226 Difference]: Without dead ends: 52574 [2022-07-22 12:26:53,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:53,467 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 710 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:53,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 335 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 12:26:53,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52574 states. [2022-07-22 12:26:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52574 to 50321. [2022-07-22 12:26:54,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50321 states, 50320 states have (on average 1.1420906200317964) internal successors, (57470), 50320 states have internal predecessors, (57470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50321 states to 50321 states and 57470 transitions. [2022-07-22 12:26:54,107 INFO L78 Accepts]: Start accepts. Automaton has 50321 states and 57470 transitions. Word has length 395 [2022-07-22 12:26:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:54,109 INFO L495 AbstractCegarLoop]: Abstraction has 50321 states and 57470 transitions. [2022-07-22 12:26:54,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:54,109 INFO L276 IsEmpty]: Start isEmpty. Operand 50321 states and 57470 transitions. [2022-07-22 12:26:54,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-07-22 12:26:54,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:54,118 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:26:54,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 12:26:54,119 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:54,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash -369619252, now seen corresponding path program 1 times [2022-07-22 12:26:54,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:54,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945495568] [2022-07-22 12:26:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-07-22 12:26:54,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:54,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945495568] [2022-07-22 12:26:54,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945495568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:54,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:54,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050626057] [2022-07-22 12:26:54,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:54,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:54,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:54,246 INFO L87 Difference]: Start difference. First operand 50321 states and 57470 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:56,638 INFO L93 Difference]: Finished difference Result 124672 states and 144149 transitions. [2022-07-22 12:26:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:56,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 483 [2022-07-22 12:26:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:56,722 INFO L225 Difference]: With dead ends: 124672 [2022-07-22 12:26:56,722 INFO L226 Difference]: Without dead ends: 75104 [2022-07-22 12:26:56,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:56,757 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 754 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 762 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:56,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1136 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [762 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 12:26:56,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75104 states. [2022-07-22 12:26:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75104 to 70598. [2022-07-22 12:26:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70598 states, 70597 states have (on average 1.1449495021034888) internal successors, (80830), 70597 states have internal predecessors, (80830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70598 states to 70598 states and 80830 transitions. [2022-07-22 12:26:57,600 INFO L78 Accepts]: Start accepts. Automaton has 70598 states and 80830 transitions. Word has length 483 [2022-07-22 12:26:57,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:57,600 INFO L495 AbstractCegarLoop]: Abstraction has 70598 states and 80830 transitions. [2022-07-22 12:26:57,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:57,601 INFO L276 IsEmpty]: Start isEmpty. Operand 70598 states and 80830 transitions. [2022-07-22 12:26:57,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2022-07-22 12:26:57,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:57,611 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:26:57,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 12:26:57,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:57,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash -12070787, now seen corresponding path program 1 times [2022-07-22 12:26:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:57,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434595164] [2022-07-22 12:26:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:57,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-22 12:26:57,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:57,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434595164] [2022-07-22 12:26:57,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434595164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:57,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:57,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:57,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483325268] [2022-07-22 12:26:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:57,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:57,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:57,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:57,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:57,716 INFO L87 Difference]: Start difference. First operand 70598 states and 80830 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:27:00,611 INFO L93 Difference]: Finished difference Result 141945 states and 162403 transitions. [2022-07-22 12:27:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:27:00,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 497 [2022-07-22 12:27:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:27:00,716 INFO L225 Difference]: With dead ends: 141945 [2022-07-22 12:27:00,716 INFO L226 Difference]: Without dead ends: 72100 [2022-07-22 12:27:00,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:27:00,757 INFO L413 NwaCegarLoop]: 1179 mSDtfsCounter, 694 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:27:00,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1187 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:27:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72100 states. [2022-07-22 12:27:01,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72100 to 70598. [2022-07-22 12:27:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70598 states, 70597 states have (on average 1.125855206311883) internal successors, (79482), 70597 states have internal predecessors, (79482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70598 states to 70598 states and 79482 transitions. [2022-07-22 12:27:01,776 INFO L78 Accepts]: Start accepts. Automaton has 70598 states and 79482 transitions. Word has length 497 [2022-07-22 12:27:01,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:27:01,777 INFO L495 AbstractCegarLoop]: Abstraction has 70598 states and 79482 transitions. [2022-07-22 12:27:01,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:01,777 INFO L276 IsEmpty]: Start isEmpty. Operand 70598 states and 79482 transitions. [2022-07-22 12:27:01,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-07-22 12:27:01,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:27:01,787 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:27:01,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 12:27:01,788 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:27:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:27:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash -70544315, now seen corresponding path program 1 times [2022-07-22 12:27:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:27:01,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389537964] [2022-07-22 12:27:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:27:01,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:27:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:27:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 618 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-22 12:27:02,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:27:02,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389537964] [2022-07-22 12:27:02,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389537964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:27:02,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:27:02,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:27:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389990940] [2022-07-22 12:27:02,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:27:02,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:27:02,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:27:02,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:27:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:27:02,008 INFO L87 Difference]: Start difference. First operand 70598 states and 79482 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:04,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:27:04,465 INFO L93 Difference]: Finished difference Result 186254 states and 210135 transitions. [2022-07-22 12:27:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:27:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 501 [2022-07-22 12:27:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:27:04,809 INFO L225 Difference]: With dead ends: 186254 [2022-07-22 12:27:04,809 INFO L226 Difference]: Without dead ends: 116409 [2022-07-22 12:27:04,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:27:04,866 INFO L413 NwaCegarLoop]: 1262 mSDtfsCounter, 665 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:27:04,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1269 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 12:27:04,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116409 states. [2022-07-22 12:27:05,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116409 to 114156. [2022-07-22 12:27:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114156 states, 114155 states have (on average 1.1025885856948885) internal successors, (125866), 114155 states have internal predecessors, (125866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114156 states to 114156 states and 125866 transitions. [2022-07-22 12:27:06,413 INFO L78 Accepts]: Start accepts. Automaton has 114156 states and 125866 transitions. Word has length 501 [2022-07-22 12:27:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:27:06,414 INFO L495 AbstractCegarLoop]: Abstraction has 114156 states and 125866 transitions. [2022-07-22 12:27:06,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 114156 states and 125866 transitions. [2022-07-22 12:27:06,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2022-07-22 12:27:06,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:27:06,426 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:27:06,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:27:06,426 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:27:06,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:27:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1729829438, now seen corresponding path program 1 times [2022-07-22 12:27:06,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:27:06,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748985269] [2022-07-22 12:27:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:27:06,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:27:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:27:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 728 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-07-22 12:27:06,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:27:06,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748985269] [2022-07-22 12:27:06,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748985269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:27:06,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:27:06,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:27:06,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327818795] [2022-07-22 12:27:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:27:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:27:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:27:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:27:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:27:06,583 INFO L87 Difference]: Start difference. First operand 114156 states and 125866 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:27:09,406 INFO L93 Difference]: Finished difference Result 230563 states and 254011 transitions. [2022-07-22 12:27:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:27:09,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 537 [2022-07-22 12:27:09,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:27:09,553 INFO L225 Difference]: With dead ends: 230563 [2022-07-22 12:27:09,553 INFO L226 Difference]: Without dead ends: 117160 [2022-07-22 12:27:09,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:27:09,598 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 803 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:27:09,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 898 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 12:27:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117160 states. [2022-07-22 12:27:10,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117160 to 110401. [2022-07-22 12:27:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110401 states, 110400 states have (on average 1.0839583333333334) internal successors, (119669), 110400 states have internal predecessors, (119669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110401 states to 110401 states and 119669 transitions. [2022-07-22 12:27:10,871 INFO L78 Accepts]: Start accepts. Automaton has 110401 states and 119669 transitions. Word has length 537 [2022-07-22 12:27:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:27:10,871 INFO L495 AbstractCegarLoop]: Abstraction has 110401 states and 119669 transitions. [2022-07-22 12:27:10,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 110401 states and 119669 transitions. [2022-07-22 12:27:10,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-07-22 12:27:10,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:27:10,884 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:27:10,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 12:27:10,884 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:27:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:27:10,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1764010138, now seen corresponding path program 1 times [2022-07-22 12:27:10,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:27:10,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765753018] [2022-07-22 12:27:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:27:10,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:27:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:27:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 350 proven. 108 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 12:27:11,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:27:11,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765753018] [2022-07-22 12:27:11,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765753018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:27:11,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060826263] [2022-07-22 12:27:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:27:11,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:27:11,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:27:11,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:27:11,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:27:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:27:11,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:27:11,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:27:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-07-22 12:27:11,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:27:11,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060826263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:27:11,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:27:11,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-22 12:27:11,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119788298] [2022-07-22 12:27:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:27:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:27:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:27:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:27:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:27:11,562 INFO L87 Difference]: Start difference. First operand 110401 states and 119669 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:27:14,108 INFO L93 Difference]: Finished difference Result 223053 states and 241597 transitions. [2022-07-22 12:27:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:27:14,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 554 [2022-07-22 12:27:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:27:14,268 INFO L225 Difference]: With dead ends: 223053 [2022-07-22 12:27:14,269 INFO L226 Difference]: Without dead ends: 113405 [2022-07-22 12:27:14,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:27:14,307 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 754 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 2706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:27:14,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 409 Invalid, 2706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 12:27:14,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113405 states. [2022-07-22 12:27:15,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113405 to 108899. [2022-07-22 12:27:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108899 states, 108898 states have (on average 1.0632518503553785) internal successors, (115786), 108898 states have internal predecessors, (115786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108899 states to 108899 states and 115786 transitions. [2022-07-22 12:27:15,689 INFO L78 Accepts]: Start accepts. Automaton has 108899 states and 115786 transitions. Word has length 554 [2022-07-22 12:27:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:27:15,690 INFO L495 AbstractCegarLoop]: Abstraction has 108899 states and 115786 transitions. [2022-07-22 12:27:15,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 108899 states and 115786 transitions. [2022-07-22 12:27:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2022-07-22 12:27:15,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:27:15,706 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:27:15,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 12:27:15,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 12:27:15,931 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:27:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:27:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1513061172, now seen corresponding path program 1 times [2022-07-22 12:27:15,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:27:15,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214114846] [2022-07-22 12:27:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:27:15,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:27:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:27:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-07-22 12:27:16,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:27:16,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214114846] [2022-07-22 12:27:16,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214114846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:27:16,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:27:16,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:27:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358518634] [2022-07-22 12:27:16,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:27:16,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:27:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:27:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:27:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:27:16,266 INFO L87 Difference]: Start difference. First operand 108899 states and 115786 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:27:19,130 INFO L93 Difference]: Finished difference Result 233567 states and 248547 transitions. [2022-07-22 12:27:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:27:19,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 555 [2022-07-22 12:27:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:27:19,291 INFO L225 Difference]: With dead ends: 233567 [2022-07-22 12:27:19,291 INFO L226 Difference]: Without dead ends: 125421 [2022-07-22 12:27:19,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:27:19,362 INFO L413 NwaCegarLoop]: 1112 mSDtfsCounter, 809 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:27:19,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1120 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 12:27:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125421 states. [2022-07-22 12:27:20,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125421 to 123919. [2022-07-22 12:27:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123919 states, 123918 states have (on average 1.0579415419874434) internal successors, (131098), 123918 states have internal predecessors, (131098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123919 states to 123919 states and 131098 transitions. [2022-07-22 12:27:20,797 INFO L78 Accepts]: Start accepts. Automaton has 123919 states and 131098 transitions. Word has length 555 [2022-07-22 12:27:20,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:27:20,797 INFO L495 AbstractCegarLoop]: Abstraction has 123919 states and 131098 transitions. [2022-07-22 12:27:20,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand 123919 states and 131098 transitions. [2022-07-22 12:27:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2022-07-22 12:27:20,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:27:20,817 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:27:20,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 12:27:20,818 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:27:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:27:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1452524345, now seen corresponding path program 1 times [2022-07-22 12:27:20,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:27:20,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186751858] [2022-07-22 12:27:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:27:20,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:27:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:27:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2022-07-22 12:27:21,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:27:21,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186751858] [2022-07-22 12:27:21,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186751858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:27:21,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:27:21,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:27:21,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71270146] [2022-07-22 12:27:21,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:27:21,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:27:21,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:27:21,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:27:21,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:27:21,024 INFO L87 Difference]: Start difference. First operand 123919 states and 131098 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:27:24,275 INFO L93 Difference]: Finished difference Result 295147 states and 312941 transitions. [2022-07-22 12:27:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:27:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 710 [2022-07-22 12:27:24,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:27:24,284 INFO L225 Difference]: With dead ends: 295147 [2022-07-22 12:27:24,284 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 12:27:24,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:27:24,317 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 763 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:27:24,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 327 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:27:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 12:27:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 12:27:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 12:27:24,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 710 [2022-07-22 12:27:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:27:24,319 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 12:27:24,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:27:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 12:27:24,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 12:27:24,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 12:27:24,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 12:27:24,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.