./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label02.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 5f9f68a3a1240fc969efb46a01cb5f627c0ce9dd351fdfdef3544b10231a4d97 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 12:44:24,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 12:44:24,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 12:44:24,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 12:44:24,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 12:44:24,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 12:44:24,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 12:44:24,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 12:44:24,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 12:44:24,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 12:44:24,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 12:44:24,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 12:44:24,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 12:44:24,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 12:44:24,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 12:44:24,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 12:44:24,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 12:44:24,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 12:44:24,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 12:44:24,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 12:44:24,679 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 12:44:24,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 12:44:24,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 12:44:24,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 12:44:24,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 12:44:24,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 12:44:24,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 12:44:24,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 12:44:24,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 12:44:24,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 12:44:24,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 12:44:24,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 12:44:24,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 12:44:24,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 12:44:24,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 12:44:24,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 12:44:24,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 12:44:24,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 12:44:24,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 12:44:24,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 12:44:24,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 12:44:24,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 12:44:24,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 12:44:24,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 12:44:24,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 12:44:24,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 12:44:24,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 12:44:24,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 12:44:24,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 12:44:24,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 12:44:24,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 12:44:24,730 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 12:44:24,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 12:44:24,731 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 12:44:24,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 12:44:24,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 12:44:24,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 12:44:24,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 12:44:24,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 12:44:24,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 12:44:24,732 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 12:44:24,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 12:44:24,732 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 12:44:24,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 12:44:24,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 12:44:24,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 12:44:24,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 12:44:24,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:44:24,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 12:44:24,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 12:44:24,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 12:44:24,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 12:44:24,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 12:44:24,748 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 12:44:24,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 12:44:24,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 12:44:24,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f9f68a3a1240fc969efb46a01cb5f627c0ce9dd351fdfdef3544b10231a4d97 [2022-07-13 12:44:24,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 12:44:24,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 12:44:24,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 12:44:24,951 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 12:44:24,967 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 12:44:24,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label02.c [2022-07-13 12:44:25,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2b68902/cb4d77289fd64e7eb13c775a1c6785bd/FLAGf07a72efd [2022-07-13 12:44:25,554 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 12:44:25,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label02.c [2022-07-13 12:44:25,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2b68902/cb4d77289fd64e7eb13c775a1c6785bd/FLAGf07a72efd [2022-07-13 12:44:25,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2b68902/cb4d77289fd64e7eb13c775a1c6785bd [2022-07-13 12:44:25,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 12:44:25,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 12:44:25,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 12:44:25,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 12:44:25,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 12:44:25,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:44:25" (1/1) ... [2022-07-13 12:44:25,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316c42be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:25, skipping insertion in model container [2022-07-13 12:44:25,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:44:25" (1/1) ... [2022-07-13 12:44:25,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 12:44:25,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 12:44:26,012 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_label02.c[7651,7664] [2022-07-13 12:44:26,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:44:26,556 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 12:44:26,579 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_label02.c[7651,7664] [2022-07-13 12:44:26,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:44:26,899 INFO L208 MainTranslator]: Completed translation [2022-07-13 12:44:26,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26 WrapperNode [2022-07-13 12:44:26,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 12:44:26,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 12:44:26,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 12:44:26,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 12:44:26,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:26,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:27,167 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-13 12:44:27,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 12:44:27,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 12:44:27,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 12:44:27,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 12:44:27,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:27,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:27,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:27,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:27,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:27,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:27,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:27,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 12:44:27,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 12:44:27,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 12:44:27,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 12:44:27,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (1/1) ... [2022-07-13 12:44:27,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:44:27,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:44:27,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 12:44:27,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 12:44:27,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 12:44:27,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 12:44:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 12:44:27,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 12:44:27,614 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 12:44:27,628 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 12:44:30,321 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 12:44:30,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 12:44:30,336 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 12:44:30,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:44:30 BoogieIcfgContainer [2022-07-13 12:44:30,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 12:44:30,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 12:44:30,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 12:44:30,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 12:44:30,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 12:44:25" (1/3) ... [2022-07-13 12:44:30,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a16c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:44:30, skipping insertion in model container [2022-07-13 12:44:30,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:44:26" (2/3) ... [2022-07-13 12:44:30,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a16c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:44:30, skipping insertion in model container [2022-07-13 12:44:30,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:44:30" (3/3) ... [2022-07-13 12:44:30,346 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label02.c [2022-07-13 12:44:30,355 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 12:44:30,355 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 12:44:30,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 12:44:30,416 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@5627392, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@46aecee7 [2022-07-13 12:44:30,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 12:44:30,421 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) [2022-07-13 12:44:30,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 12:44:30,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:44:30,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:44:30,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:44:30,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:44:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash 531730986, now seen corresponding path program 1 times [2022-07-13 12:44:30,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:44:30,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113450840] [2022-07-13 12:44:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:30,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:44:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:44:30,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:44:30,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113450840] [2022-07-13 12:44:30,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113450840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:44:30,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:44:30,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:44:30,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609195084] [2022-07-13 12:44:30,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:44:30,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:44:30,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:44:30,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:44:30,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:44:30,646 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 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:33,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:44:33,511 INFO L93 Difference]: Finished difference Result 2404 states and 4645 transitions. [2022-07-13 12:44:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:44:33,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-13 12:44:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:44:33,529 INFO L225 Difference]: With dead ends: 2404 [2022-07-13 12:44:33,529 INFO L226 Difference]: Without dead ends: 1506 [2022-07-13 12:44:33,533 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 [2022-07-13 12:44:33,535 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 758 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:44:33,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 525 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:44:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-13 12:44:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-13 12:44:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6066445182724252) internal successors, (2418), 1505 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2418 transitions. [2022-07-13 12:44:33,632 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2418 transitions. Word has length 62 [2022-07-13 12:44:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:44:33,633 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2418 transitions. [2022-07-13 12:44:33,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2418 transitions. [2022-07-13 12:44:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 12:44:33,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:44:33,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:44:33,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 12:44:33,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:44:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:44:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash 158284175, now seen corresponding path program 1 times [2022-07-13 12:44:33,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:44:33,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306151562] [2022-07-13 12:44:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:33,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:44:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:44:33,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:44:33,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306151562] [2022-07-13 12:44:33,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306151562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:44:33,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:44:33,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:44:33,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961494610] [2022-07-13 12:44:33,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:44:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:44:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:44:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:44:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:44:33,783 INFO L87 Difference]: Start difference. First operand 1506 states and 2418 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:44:36,176 INFO L93 Difference]: Finished difference Result 4512 states and 7249 transitions. [2022-07-13 12:44:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:44:36,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-07-13 12:44:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:44:36,190 INFO L225 Difference]: With dead ends: 4512 [2022-07-13 12:44:36,190 INFO L226 Difference]: Without dead ends: 3008 [2022-07-13 12:44:36,192 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 [2022-07-13 12:44:36,193 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:44:36,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 449 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 12:44:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-07-13 12:44:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-07-13 12:44:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4156967076820752) internal successors, (4257), 3007 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4257 transitions. [2022-07-13 12:44:36,235 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4257 transitions. Word has length 137 [2022-07-13 12:44:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:44:36,236 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4257 transitions. [2022-07-13 12:44:36,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4257 transitions. [2022-07-13 12:44:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 12:44:36,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:44:36,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:44:36,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 12:44:36,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:44:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:44:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1924184374, now seen corresponding path program 1 times [2022-07-13 12:44:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:44:36,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29158564] [2022-07-13 12:44:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:44:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:44:36,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:44:36,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29158564] [2022-07-13 12:44:36,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29158564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:44:36,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:44:36,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:44:36,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332847781] [2022-07-13 12:44:36,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:44:36,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:44:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:44:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:44:36,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:44:36,386 INFO L87 Difference]: Start difference. First operand 3008 states and 4257 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:44:39,966 INFO L93 Difference]: Finished difference Result 9769 states and 13601 transitions. [2022-07-13 12:44:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:44:39,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-07-13 12:44:39,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:44:39,984 INFO L225 Difference]: With dead ends: 9769 [2022-07-13 12:44:39,984 INFO L226 Difference]: Without dead ends: 6763 [2022-07-13 12:44:39,988 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 [2022-07-13 12:44:39,989 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 2180 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 5459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:44:39,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 166 Invalid, 5459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 12:44:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-07-13 12:44:40,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2022-07-13 12:44:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3507837917775807) internal successors, (9134), 6762 states have internal predecessors, (9134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9134 transitions. [2022-07-13 12:44:40,077 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9134 transitions. Word has length 139 [2022-07-13 12:44:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:44:40,078 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9134 transitions. [2022-07-13 12:44:40,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9134 transitions. [2022-07-13 12:44:40,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-13 12:44:40,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:44:40,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:44:40,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 12:44:40,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:44:40,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:44:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1063433376, now seen corresponding path program 1 times [2022-07-13 12:44:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:44:40,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034278746] [2022-07-13 12:44:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:40,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:44:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 12:44:40,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:44:40,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034278746] [2022-07-13 12:44:40,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034278746] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:44:40,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417511699] [2022-07-13 12:44:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:40,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:44:40,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:44:40,254 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) [2022-07-13 12:44:40,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 12:44:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:40,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:44:40,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:44:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-13 12:44:40,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:44:40,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417511699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:44:40,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:44:40,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-13 12:44:40,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407478937] [2022-07-13 12:44:40,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:44:40,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:44:40,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:44:40,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:44:40,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:44:40,562 INFO L87 Difference]: Start difference. First operand 6763 states and 9134 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:42,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:44:42,686 INFO L93 Difference]: Finished difference Result 15777 states and 21144 transitions. [2022-07-13 12:44:42,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:44:42,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 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 207 [2022-07-13 12:44:42,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:44:42,710 INFO L225 Difference]: With dead ends: 15777 [2022-07-13 12:44:42,710 INFO L226 Difference]: Without dead ends: 9767 [2022-07-13 12:44:42,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:44:42,718 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 712 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 12:44:42,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 156 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 12:44:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-07-13 12:44:42,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-07-13 12:44:42,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2556829817734998) internal successors, (12263), 9766 states have internal predecessors, (12263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12263 transitions. [2022-07-13 12:44:42,827 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12263 transitions. Word has length 207 [2022-07-13 12:44:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:44:42,828 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12263 transitions. [2022-07-13 12:44:42,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12263 transitions. [2022-07-13 12:44:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-13 12:44:42,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:44:42,831 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, 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] [2022-07-13 12:44:42,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 12:44:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:44:43,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:44:43,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:44:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2118553831, now seen corresponding path program 1 times [2022-07-13 12:44:43,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:44:43,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163909763] [2022-07-13 12:44:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:43,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:44:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-13 12:44:43,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:44:43,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163909763] [2022-07-13 12:44:43,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163909763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:44:43,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:44:43,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:44:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073934962] [2022-07-13 12:44:43,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:44:43,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:44:43,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:44:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:44:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:44:43,205 INFO L87 Difference]: Start difference. First operand 9767 states and 12263 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:46,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:44:46,166 INFO L93 Difference]: Finished difference Result 27118 states and 34546 transitions. [2022-07-13 12:44:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:44:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2022-07-13 12:44:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:44:46,212 INFO L225 Difference]: With dead ends: 27118 [2022-07-13 12:44:46,213 INFO L226 Difference]: Without dead ends: 18030 [2022-07-13 12:44:46,223 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 [2022-07-13 12:44:46,224 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 776 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 4343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:44:46,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 365 Invalid, 4343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 12:44:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18030 states. [2022-07-13 12:44:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18030 to 15775. [2022-07-13 12:44:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.1934195511601369) internal successors, (18825), 15774 states have internal predecessors, (18825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 18825 transitions. [2022-07-13 12:44:46,414 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 18825 transitions. Word has length 274 [2022-07-13 12:44:46,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:44:46,414 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 18825 transitions. [2022-07-13 12:44:46,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:46,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 18825 transitions. [2022-07-13 12:44:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-13 12:44:46,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:44:46,420 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, 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] [2022-07-13 12:44:46,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 12:44:46,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:44:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:44:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash -797031540, now seen corresponding path program 1 times [2022-07-13 12:44:46,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:44:46,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453823920] [2022-07-13 12:44:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:44:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 12:44:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:44:46,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453823920] [2022-07-13 12:44:46,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453823920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:44:46,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:44:46,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:44:46,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596921068] [2022-07-13 12:44:46,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:44:46,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:44:46,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:44:46,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:44:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:44:46,528 INFO L87 Difference]: Start difference. First operand 15775 states and 18825 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:44:48,984 INFO L93 Difference]: Finished difference Result 39058 states and 47478 transitions. [2022-07-13 12:44:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:44:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 385 [2022-07-13 12:44:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:44:49,018 INFO L225 Difference]: With dead ends: 39058 [2022-07-13 12:44:49,019 INFO L226 Difference]: Without dead ends: 24036 [2022-07-13 12:44:49,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:44:49,035 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 695 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:44:49,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 428 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 12:44:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2022-07-13 12:44:49,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 24036. [2022-07-13 12:44:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24036 states, 24035 states have (on average 1.182275847722072) internal successors, (28416), 24035 states have internal predecessors, (28416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24036 states to 24036 states and 28416 transitions. [2022-07-13 12:44:49,257 INFO L78 Accepts]: Start accepts. Automaton has 24036 states and 28416 transitions. Word has length 385 [2022-07-13 12:44:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:44:49,257 INFO L495 AbstractCegarLoop]: Abstraction has 24036 states and 28416 transitions. [2022-07-13 12:44:49,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 24036 states and 28416 transitions. [2022-07-13 12:44:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-07-13 12:44:49,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:44:49,264 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:44:49,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 12:44:49,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:44:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:44:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1789129640, now seen corresponding path program 1 times [2022-07-13 12:44:49,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:44:49,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917613435] [2022-07-13 12:44:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:49,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:44:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 12:44:49,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:44:49,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917613435] [2022-07-13 12:44:49,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917613435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:44:49,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:44:49,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:44:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420979036] [2022-07-13 12:44:49,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:44:49,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:44:49,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:44:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:44:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:44:49,387 INFO L87 Difference]: Start difference. First operand 24036 states and 28416 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:44:51,609 INFO L93 Difference]: Finished difference Result 56331 states and 68010 transitions. [2022-07-13 12:44:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:44:51,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 396 [2022-07-13 12:44:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:44:51,658 INFO L225 Difference]: With dead ends: 56331 [2022-07-13 12:44:51,658 INFO L226 Difference]: Without dead ends: 33048 [2022-07-13 12:44:51,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:44:51,683 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 12:44:51,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1216 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 12:44:51,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33048 states. [2022-07-13 12:44:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33048 to 30795. [2022-07-13 12:44:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30795 states, 30794 states have (on average 1.1705851789309605) internal successors, (36047), 30794 states have internal predecessors, (36047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30795 states to 30795 states and 36047 transitions. [2022-07-13 12:44:51,985 INFO L78 Accepts]: Start accepts. Automaton has 30795 states and 36047 transitions. Word has length 396 [2022-07-13 12:44:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:44:51,986 INFO L495 AbstractCegarLoop]: Abstraction has 30795 states and 36047 transitions. [2022-07-13 12:44:51,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 30795 states and 36047 transitions. [2022-07-13 12:44:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-07-13 12:44:51,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:44:51,990 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:44:51,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 12:44:51,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:44:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:44:51,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1548462628, now seen corresponding path program 1 times [2022-07-13 12:44:51,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:44:51,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816659756] [2022-07-13 12:44:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:51,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:44:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-13 12:44:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:44:52,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816659756] [2022-07-13 12:44:52,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816659756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:44:52,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:44:52,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:44:52,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098207188] [2022-07-13 12:44:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:44:52,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:44:52,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:44:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:44:52,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:44:52,179 INFO L87 Difference]: Start difference. First operand 30795 states and 36047 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:44:54,445 INFO L93 Difference]: Finished difference Result 69849 states and 83272 transitions. [2022-07-13 12:44:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:44:54,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 417 [2022-07-13 12:44:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:44:54,495 INFO L225 Difference]: With dead ends: 69849 [2022-07-13 12:44:54,495 INFO L226 Difference]: Without dead ends: 39807 [2022-07-13 12:44:54,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:44:54,520 INFO L413 NwaCegarLoop]: 1277 mSDtfsCounter, 673 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 12:44:54,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1285 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 12:44:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39807 states. [2022-07-13 12:44:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39807 to 39807. [2022-07-13 12:44:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39807 states, 39806 states have (on average 1.1525146962769433) internal successors, (45877), 39806 states have internal predecessors, (45877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39807 states to 39807 states and 45877 transitions. [2022-07-13 12:44:54,952 INFO L78 Accepts]: Start accepts. Automaton has 39807 states and 45877 transitions. Word has length 417 [2022-07-13 12:44:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:44:54,952 INFO L495 AbstractCegarLoop]: Abstraction has 39807 states and 45877 transitions. [2022-07-13 12:44:54,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:44:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 39807 states and 45877 transitions. [2022-07-13 12:44:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-07-13 12:44:54,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:44:54,957 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:44:54,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 12:44:54,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:44:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:44:54,958 INFO L85 PathProgramCache]: Analyzing trace with hash -405541038, now seen corresponding path program 1 times [2022-07-13 12:44:54,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:44:54,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887656132] [2022-07-13 12:44:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:54,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:44:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 452 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:44:55,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:44:55,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887656132] [2022-07-13 12:44:55,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887656132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:44:55,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104526344] [2022-07-13 12:44:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:44:55,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:44:55,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:44:55,204 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) [2022-07-13 12:44:55,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 12:44:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:44:55,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 12:44:55,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:44:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 312 proven. 60 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-13 12:44:55,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 12:44:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 312 proven. 60 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-13 12:44:55,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104526344] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 12:44:55,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 12:44:55,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 11 [2022-07-13 12:44:55,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719485451] [2022-07-13 12:44:55,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 12:44:55,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 12:44:55,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:44:55,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 12:44:55,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-13 12:44:55,789 INFO L87 Difference]: Start difference. First operand 39807 states and 45877 transitions. Second operand has 11 states, 11 states have (on average 80.36363636363636) internal successors, (884), 11 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:45:17,826 INFO L93 Difference]: Finished difference Result 171236 states and 194891 transitions. [2022-07-13 12:45:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 12:45:17,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 80.36363636363636) internal successors, (884), 11 states have internal predecessors, (884), 0 states have call successors, (0), 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 421 [2022-07-13 12:45:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:45:18,020 INFO L225 Difference]: With dead ends: 171236 [2022-07-13 12:45:18,020 INFO L226 Difference]: Without dead ends: 130680 [2022-07-13 12:45:18,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2022-07-13 12:45:18,051 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 11998 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 39075 mSolverCounterSat, 3549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11998 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 42624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3549 IncrementalHoareTripleChecker+Valid, 39075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:45:18,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11998 Valid, 304 Invalid, 42624 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3549 Valid, 39075 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2022-07-13 12:45:18,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130680 states. [2022-07-13 12:45:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130680 to 84116. [2022-07-13 12:45:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84116 states, 84115 states have (on average 1.1242227902276645) internal successors, (94564), 84115 states have internal predecessors, (94564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 94564 transitions. [2022-07-13 12:45:19,211 INFO L78 Accepts]: Start accepts. Automaton has 84116 states and 94564 transitions. Word has length 421 [2022-07-13 12:45:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:45:19,212 INFO L495 AbstractCegarLoop]: Abstraction has 84116 states and 94564 transitions. [2022-07-13 12:45:19,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 80.36363636363636) internal successors, (884), 11 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 84116 states and 94564 transitions. [2022-07-13 12:45:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-07-13 12:45:19,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:45:19,219 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, 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, 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] [2022-07-13 12:45:19,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 12:45:19,435 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,SelfDestructingSolverStorable8 [2022-07-13 12:45:19,436 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:45:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:45:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash -15096808, now seen corresponding path program 1 times [2022-07-13 12:45:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:45:19,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205252371] [2022-07-13 12:45:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:45:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:45:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:45:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-13 12:45:19,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:45:19,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205252371] [2022-07-13 12:45:19,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205252371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:45:19,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:45:19,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:45:19,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676515373] [2022-07-13 12:45:19,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:45:19,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:45:19,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:45:19,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:45:19,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:19,560 INFO L87 Difference]: Start difference. First operand 84116 states and 94564 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:45:22,605 INFO L93 Difference]: Finished difference Result 225306 states and 254534 transitions. [2022-07-13 12:45:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:45:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 463 [2022-07-13 12:45:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:45:22,838 INFO L225 Difference]: With dead ends: 225306 [2022-07-13 12:45:22,839 INFO L226 Difference]: Without dead ends: 140441 [2022-07-13 12:45:22,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:22,868 INFO L413 NwaCegarLoop]: 1336 mSDtfsCounter, 657 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:45:22,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1343 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 12:45:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140441 states. [2022-07-13 12:45:24,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140441 to 130678. [2022-07-13 12:45:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130678 states, 130677 states have (on average 1.1015480918600824) internal successors, (143947), 130677 states have internal predecessors, (143947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:24,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130678 states to 130678 states and 143947 transitions. [2022-07-13 12:45:24,515 INFO L78 Accepts]: Start accepts. Automaton has 130678 states and 143947 transitions. Word has length 463 [2022-07-13 12:45:24,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:45:24,515 INFO L495 AbstractCegarLoop]: Abstraction has 130678 states and 143947 transitions. [2022-07-13 12:45:24,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:24,516 INFO L276 IsEmpty]: Start isEmpty. Operand 130678 states and 143947 transitions. [2022-07-13 12:45:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-07-13 12:45:24,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:45:24,525 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:45:24,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 12:45:24,525 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:45:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:45:24,526 INFO L85 PathProgramCache]: Analyzing trace with hash -321984110, now seen corresponding path program 1 times [2022-07-13 12:45:24,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:45:24,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110226359] [2022-07-13 12:45:24,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:45:24,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:45:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:45:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-13 12:45:24,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:45:24,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110226359] [2022-07-13 12:45:24,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110226359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:45:24,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:45:24,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:45:24,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749625484] [2022-07-13 12:45:24,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:45:24,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:45:24,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:45:24,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:45:24,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:24,660 INFO L87 Difference]: Start difference. First operand 130678 states and 143947 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:27,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:45:27,817 INFO L93 Difference]: Finished difference Result 310169 states and 344532 transitions. [2022-07-13 12:45:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:45:27,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 488 [2022-07-13 12:45:27,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:45:28,053 INFO L225 Difference]: With dead ends: 310169 [2022-07-13 12:45:28,053 INFO L226 Difference]: Without dead ends: 178742 [2022-07-13 12:45:28,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:28,090 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 781 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:45:28,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1124 Invalid, 2873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 12:45:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178742 states. [2022-07-13 12:45:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178742 to 171232. [2022-07-13 12:45:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171232 states, 171231 states have (on average 1.1036844963820804) internal successors, (188985), 171231 states have internal predecessors, (188985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171232 states to 171232 states and 188985 transitions. [2022-07-13 12:45:30,207 INFO L78 Accepts]: Start accepts. Automaton has 171232 states and 188985 transitions. Word has length 488 [2022-07-13 12:45:30,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:45:30,207 INFO L495 AbstractCegarLoop]: Abstraction has 171232 states and 188985 transitions. [2022-07-13 12:45:30,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 171232 states and 188985 transitions. [2022-07-13 12:45:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-07-13 12:45:30,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:45:30,224 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:45:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 12:45:30,226 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:45:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:45:30,226 INFO L85 PathProgramCache]: Analyzing trace with hash 8677539, now seen corresponding path program 1 times [2022-07-13 12:45:30,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:45:30,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449655069] [2022-07-13 12:45:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:45:30,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:45:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:45:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-13 12:45:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:45:30,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449655069] [2022-07-13 12:45:30,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449655069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:45:30,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:45:30,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:45:30,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311998766] [2022-07-13 12:45:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:45:30,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:45:30,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:45:30,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:45:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:30,368 INFO L87 Difference]: Start difference. First operand 171232 states and 188985 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:33,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:45:33,275 INFO L93 Difference]: Finished difference Result 343964 states and 379477 transitions. [2022-07-13 12:45:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:45:33,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 494 [2022-07-13 12:45:33,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:45:33,510 INFO L225 Difference]: With dead ends: 343964 [2022-07-13 12:45:33,510 INFO L226 Difference]: Without dead ends: 172734 [2022-07-13 12:45:33,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:33,611 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 800 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 12:45:33,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 222 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 12:45:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172734 states. [2022-07-13 12:45:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172734 to 160718. [2022-07-13 12:45:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160718 states, 160717 states have (on average 1.07856045097905) internal successors, (173343), 160717 states have internal predecessors, (173343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160718 states to 160718 states and 173343 transitions. [2022-07-13 12:45:35,638 INFO L78 Accepts]: Start accepts. Automaton has 160718 states and 173343 transitions. Word has length 494 [2022-07-13 12:45:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:45:35,638 INFO L495 AbstractCegarLoop]: Abstraction has 160718 states and 173343 transitions. [2022-07-13 12:45:35,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 160718 states and 173343 transitions. [2022-07-13 12:45:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-07-13 12:45:35,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:45:35,647 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, 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, 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] [2022-07-13 12:45:35,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 12:45:35,647 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:45:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:45:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1716293343, now seen corresponding path program 1 times [2022-07-13 12:45:35,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:45:35,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33875702] [2022-07-13 12:45:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:45:35,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:45:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:45:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-13 12:45:35,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:45:35,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33875702] [2022-07-13 12:45:35,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33875702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:45:35,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:45:35,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:45:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143011979] [2022-07-13 12:45:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:45:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:45:35,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:45:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:45:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:35,752 INFO L87 Difference]: Start difference. First operand 160718 states and 173343 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:45:39,491 INFO L93 Difference]: Finished difference Result 362739 states and 392799 transitions. [2022-07-13 12:45:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:45:39,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 494 [2022-07-13 12:45:39,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:45:39,801 INFO L225 Difference]: With dead ends: 362739 [2022-07-13 12:45:39,801 INFO L226 Difference]: Without dead ends: 202023 [2022-07-13 12:45:39,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:39,881 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 666 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:45:39,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1243 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 12:45:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202023 states. [2022-07-13 12:45:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202023 to 196015. [2022-07-13 12:45:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196015 states, 196014 states have (on average 1.070474557939739) internal successors, (209828), 196014 states have internal predecessors, (209828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196015 states to 196015 states and 209828 transitions. [2022-07-13 12:45:42,431 INFO L78 Accepts]: Start accepts. Automaton has 196015 states and 209828 transitions. Word has length 494 [2022-07-13 12:45:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:45:42,431 INFO L495 AbstractCegarLoop]: Abstraction has 196015 states and 209828 transitions. [2022-07-13 12:45:42,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 196015 states and 209828 transitions. [2022-07-13 12:45:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-07-13 12:45:42,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:45:42,441 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:45:42,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 12:45:42,442 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:45:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:45:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1685247736, now seen corresponding path program 1 times [2022-07-13 12:45:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:45:42,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604136559] [2022-07-13 12:45:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:45:42,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:45:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:45:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-13 12:45:42,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:45:42,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604136559] [2022-07-13 12:45:42,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604136559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:45:42,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:45:42,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:45:42,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215805395] [2022-07-13 12:45:42,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:45:42,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:45:42,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:45:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:45:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:42,593 INFO L87 Difference]: Start difference. First operand 196015 states and 209828 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:45:45,731 INFO L93 Difference]: Finished difference Result 395783 states and 423457 transitions. [2022-07-13 12:45:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:45:45,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 545 [2022-07-13 12:45:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:45:46,010 INFO L225 Difference]: With dead ends: 395783 [2022-07-13 12:45:46,011 INFO L226 Difference]: Without dead ends: 195264 [2022-07-13 12:45:46,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:45:46,109 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 665 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:45:46,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1314 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 12:45:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195264 states. [2022-07-13 12:45:48,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195264 to 185501. [2022-07-13 12:45:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185501 states, 185500 states have (on average 1.0638706199460917) internal successors, (197348), 185500 states have internal predecessors, (197348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185501 states to 185501 states and 197348 transitions. [2022-07-13 12:45:48,737 INFO L78 Accepts]: Start accepts. Automaton has 185501 states and 197348 transitions. Word has length 545 [2022-07-13 12:45:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:45:48,738 INFO L495 AbstractCegarLoop]: Abstraction has 185501 states and 197348 transitions. [2022-07-13 12:45:48,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:45:48,738 INFO L276 IsEmpty]: Start isEmpty. Operand 185501 states and 197348 transitions. [2022-07-13 12:45:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-07-13 12:45:48,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:45:48,748 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:45:48,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 12:45:48,749 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:45:48,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:45:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1434748982, now seen corresponding path program 1 times [2022-07-13 12:45:48,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:45:48,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241128967] [2022-07-13 12:45:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:45:48,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:45:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:45:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 626 proven. 54 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-07-13 12:45:48,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:45:48,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241128967] [2022-07-13 12:45:48,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241128967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:45:48,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653887249] [2022-07-13 12:45:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:45:48,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:45:48,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:45:48,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:45:48,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 12:45:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:45:49,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 12:45:49,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:45:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 600 proven. 129 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-13 12:45:49,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 12:45:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 600 proven. 129 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-13 12:45:49,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653887249] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 12:45:49,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 12:45:49,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2022-07-13 12:45:49,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394379202] [2022-07-13 12:45:49,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 12:45:49,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 12:45:49,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:45:49,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 12:45:49,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-13 12:45:49,750 INFO L87 Difference]: Start difference. First operand 185501 states and 197348 transitions. Second operand has 11 states, 11 states have (on average 104.63636363636364) internal successors, (1151), 11 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:46:12,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:46:12,760 INFO L93 Difference]: Finished difference Result 496417 states and 526261 transitions. [2022-07-13 12:46:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-13 12:46:12,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 104.63636363636364) internal successors, (1151), 11 states have internal predecessors, (1151), 0 states have call successors, (0), 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 568 [2022-07-13 12:46:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:46:13,375 INFO L225 Difference]: With dead ends: 496417 [2022-07-13 12:46:13,376 INFO L226 Difference]: Without dead ends: 307163 [2022-07-13 12:46:13,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1154 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=385, Invalid=875, Unknown=0, NotChecked=0, Total=1260 [2022-07-13 12:46:13,436 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 31563 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 28086 mSolverCounterSat, 6786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31563 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 34872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6786 IncrementalHoareTripleChecker+Valid, 28086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:46:13,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31563 Valid, 201 Invalid, 34872 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6786 Valid, 28086 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2022-07-13 12:46:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307163 states. [2022-07-13 12:46:15,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307163 to 204276. [2022-07-13 12:46:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204276 states, 204275 states have (on average 1.05189083343532) internal successors, (214875), 204275 states have internal predecessors, (214875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:46:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204276 states to 204276 states and 214875 transitions. [2022-07-13 12:46:16,666 INFO L78 Accepts]: Start accepts. Automaton has 204276 states and 214875 transitions. Word has length 568 [2022-07-13 12:46:16,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:46:16,666 INFO L495 AbstractCegarLoop]: Abstraction has 204276 states and 214875 transitions. [2022-07-13 12:46:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 104.63636363636364) internal successors, (1151), 11 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:46:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 204276 states and 214875 transitions. [2022-07-13 12:46:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-07-13 12:46:16,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:46:16,693 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-07-13 12:46:16,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 12:46:16,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:46:16,894 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:46:16,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:46:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash 795715432, now seen corresponding path program 1 times [2022-07-13 12:46:16,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:46:16,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134375546] [2022-07-13 12:46:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:46:16,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:46:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:46:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 712 proven. 372 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-13 12:46:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:46:17,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134375546] [2022-07-13 12:46:17,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134375546] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:46:17,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175143539] [2022-07-13 12:46:17,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:46:17,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:46:17,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:46:17,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:46:17,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 12:46:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:46:17,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:46:17,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:46:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-13 12:46:17,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:46:17,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175143539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:46:17,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:46:17,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-13 12:46:17,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247731006] [2022-07-13 12:46:17,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:46:17,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:46:17,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:46:17,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:46:17,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 12:46:17,322 INFO L87 Difference]: Start difference. First operand 204276 states and 214875 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:46:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:46:20,408 INFO L93 Difference]: Finished difference Result 426574 states and 448661 transitions. [2022-07-13 12:46:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:46:20,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 629 [2022-07-13 12:46:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:46:20,688 INFO L225 Difference]: With dead ends: 426574 [2022-07-13 12:46:20,688 INFO L226 Difference]: Without dead ends: 218545 [2022-07-13 12:46:20,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 12:46:20,785 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 862 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 12:46:20,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 352 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 12:46:21,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218545 states. [2022-07-13 12:46:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218545 to 209533. [2022-07-13 12:46:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209533 states, 209532 states have (on average 1.0364192581562721) internal successors, (217163), 209532 states have internal predecessors, (217163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:46:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209533 states to 209533 states and 217163 transitions. [2022-07-13 12:46:23,461 INFO L78 Accepts]: Start accepts. Automaton has 209533 states and 217163 transitions. Word has length 629 [2022-07-13 12:46:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:46:23,461 INFO L495 AbstractCegarLoop]: Abstraction has 209533 states and 217163 transitions. [2022-07-13 12:46:23,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:46:23,461 INFO L276 IsEmpty]: Start isEmpty. Operand 209533 states and 217163 transitions. [2022-07-13 12:46:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2022-07-13 12:46:23,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:46:23,477 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:46:23,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 12:46:23,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 12:46:23,679 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:46:23,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:46:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash 248997848, now seen corresponding path program 1 times [2022-07-13 12:46:23,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:46:23,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144639502] [2022-07-13 12:46:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:46:23,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:46:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:46:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1268 backedges. 831 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2022-07-13 12:46:23,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:46:23,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144639502] [2022-07-13 12:46:23,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144639502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:46:23,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:46:23,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:46:23,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182912017] [2022-07-13 12:46:23,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:46:23,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:46:23,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:46:23,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:46:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:46:23,840 INFO L87 Difference]: Start difference. First operand 209533 states and 217163 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:46:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:46:27,290 INFO L93 Difference]: Finished difference Result 422068 states and 437377 transitions. [2022-07-13 12:46:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:46:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 700 [2022-07-13 12:46:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:46:27,584 INFO L225 Difference]: With dead ends: 422068 [2022-07-13 12:46:27,584 INFO L226 Difference]: Without dead ends: 213288 [2022-07-13 12:46:27,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:46:27,681 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:46:27,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1097 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 12:46:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213288 states.