./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_label11.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 7c2a5ace26f36583b09a306c2edaa0573f422d931cc3959f8aefc935152706cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 12:09:50,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 12:09:50,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 12:09:50,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 12:09:50,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 12:09:50,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 12:09:50,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 12:09:50,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 12:09:50,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 12:09:50,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 12:09:50,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 12:09:50,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 12:09:50,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 12:09:50,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 12:09:50,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 12:09:50,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 12:09:50,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 12:09:50,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 12:09:50,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 12:09:50,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 12:09:50,632 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 12:09:50,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 12:09:50,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 12:09:50,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 12:09:50,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 12:09:50,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 12:09:50,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 12:09:50,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 12:09:50,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 12:09:50,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 12:09:50,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 12:09:50,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 12:09:50,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 12:09:50,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 12:09:50,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 12:09:50,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 12:09:50,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 12:09:50,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 12:09:50,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 12:09:50,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 12:09:50,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 12:09:50,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 12:09:50,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 12:09:50,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 12:09:50,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 12:09:50,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 12:09:50,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 12:09:50,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 12:09:50,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 12:09:50,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 12:09:50,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 12:09:50,671 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 12:09:50,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 12:09:50,672 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 12:09:50,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 12:09:50,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 12:09:50,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 12:09:50,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 12:09:50,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 12:09:50,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 12:09:50,673 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 12:09:50,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 12:09:50,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 12:09:50,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 12:09:50,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 12:09:50,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 12:09:50,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 12:09:50,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:09:50,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 12:09:50,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 12:09:50,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 12:09:50,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 12:09:50,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 12:09:50,676 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 12:09:50,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 12:09:50,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 12:09:50,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c2a5ace26f36583b09a306c2edaa0573f422d931cc3959f8aefc935152706cf [2022-07-19 12:09:50,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 12:09:50,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 12:09:50,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 12:09:50,867 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 12:09:50,868 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 12:09:50,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label11.c [2022-07-19 12:09:50,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/037fbdd54/75bd0b74b3ac4f20aac7042aeeb981a7/FLAGac263a8ae [2022-07-19 12:09:51,439 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 12:09:51,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label11.c [2022-07-19 12:09:51,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/037fbdd54/75bd0b74b3ac4f20aac7042aeeb981a7/FLAGac263a8ae [2022-07-19 12:09:51,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/037fbdd54/75bd0b74b3ac4f20aac7042aeeb981a7 [2022-07-19 12:09:51,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 12:09:51,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 12:09:51,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 12:09:51,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 12:09:51,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 12:09:51,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:09:51" (1/1) ... [2022-07-19 12:09:51,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44217229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:51, skipping insertion in model container [2022-07-19 12:09:51,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:09:51" (1/1) ... [2022-07-19 12:09:51,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 12:09:51,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 12:09:52,023 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_label11.c[5009,5022] [2022-07-19 12:09:52,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:09:52,577 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 12:09:52,598 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_label11.c[5009,5022] [2022-07-19 12:09:52,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:09:52,892 INFO L208 MainTranslator]: Completed translation [2022-07-19 12:09:52,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52 WrapperNode [2022-07-19 12:09:52,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 12:09:52,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 12:09:52,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 12:09:52,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 12:09:52,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:52,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:53,273 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-19 12:09:53,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 12:09:53,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 12:09:53,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 12:09:53,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 12:09:53,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:53,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:53,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:53,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:53,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:53,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:53,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:53,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 12:09:53,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 12:09:53,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 12:09:53,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 12:09:53,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (1/1) ... [2022-07-19 12:09:53,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:09:53,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:09:53,668 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) [2022-07-19 12:09:53,685 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 [2022-07-19 12:09:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 12:09:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 12:09:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 12:09:53,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 12:09:53,759 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 12:09:53,761 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 12:09:56,363 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 12:09:56,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 12:09:56,389 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 12:09:56,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:09:56 BoogieIcfgContainer [2022-07-19 12:09:56,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 12:09:56,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 12:09:56,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 12:09:56,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 12:09:56,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 12:09:51" (1/3) ... [2022-07-19 12:09:56,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431c6736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:09:56, skipping insertion in model container [2022-07-19 12:09:56,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:09:52" (2/3) ... [2022-07-19 12:09:56,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431c6736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:09:56, skipping insertion in model container [2022-07-19 12:09:56,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:09:56" (3/3) ... [2022-07-19 12:09:56,397 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label11.c [2022-07-19 12:09:56,405 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 12:09:56,405 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 12:09:56,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 12:09:56,448 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@1903c1b3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28a29d01 [2022-07-19 12:09:56,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 12:09:56,453 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) [2022-07-19 12:09:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 12:09:56,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:56,459 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] [2022-07-19 12:09:56,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1453294289, now seen corresponding path program 1 times [2022-07-19 12:09:56,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:56,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11850935] [2022-07-19 12:09:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:56,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:56,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:09:56,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:56,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11850935] [2022-07-19 12:09:56,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11850935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:56,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:56,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:09:56,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516450275] [2022-07-19 12:09:56,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:56,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:56,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:56,625 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 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:59,329 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-07-19 12:09:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:59,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-07-19 12:09:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:59,357 INFO L225 Difference]: With dead ends: 2388 [2022-07-19 12:09:59,358 INFO L226 Difference]: Without dead ends: 1506 [2022-07-19 12:09:59,362 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 [2022-07-19 12:09:59,365 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 797 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:59,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 112 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 12:09:59,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-19 12:09:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-19 12:09:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.86578073089701) internal successors, (2808), 1505 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2808 transitions. [2022-07-19 12:09:59,434 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2808 transitions. Word has length 39 [2022-07-19 12:09:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:59,435 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2808 transitions. [2022-07-19 12:09:59,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2808 transitions. [2022-07-19 12:09:59,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-19 12:09:59,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:59,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:59,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 12:09:59,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:59,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:59,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1028899956, now seen corresponding path program 1 times [2022-07-19 12:09:59,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:59,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578871919] [2022-07-19 12:09:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:59,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:09:59,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:59,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578871919] [2022-07-19 12:09:59,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578871919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:59,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:59,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:59,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718961844] [2022-07-19 12:09:59,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:59,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:09:59,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:09:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:09:59,593 INFO L87 Difference]: Start difference. First operand 1506 states and 2808 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:03,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:03,795 INFO L93 Difference]: Finished difference Result 5271 states and 9796 transitions. [2022-07-19 12:10:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:10:03,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-19 12:10:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:03,808 INFO L225 Difference]: With dead ends: 5271 [2022-07-19 12:10:03,808 INFO L226 Difference]: Without dead ends: 3767 [2022-07-19 12:10:03,812 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 [2022-07-19 12:10:03,814 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 2305 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1534 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:03,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 199 Invalid, 5146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1534 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-19 12:10:03,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2022-07-19 12:10:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3759. [2022-07-19 12:10:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.6053751995742416) internal successors, (6033), 3758 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 6033 transitions. [2022-07-19 12:10:03,872 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 6033 transitions. Word has length 104 [2022-07-19 12:10:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:03,873 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 6033 transitions. [2022-07-19 12:10:03,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 6033 transitions. [2022-07-19 12:10:03,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-19 12:10:03,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:03,885 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:10:03,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 12:10:03,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:03,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1954930215, now seen corresponding path program 1 times [2022-07-19 12:10:03,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:03,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339292892] [2022-07-19 12:10:03,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:03,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 12:10:04,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:04,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339292892] [2022-07-19 12:10:04,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339292892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:04,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:04,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:04,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154640981] [2022-07-19 12:10:04,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:04,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:10:04,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:04,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:10:04,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:10:04,038 INFO L87 Difference]: Start difference. First operand 3759 states and 6033 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:07,451 INFO L93 Difference]: Finished difference Result 10559 states and 17375 transitions. [2022-07-19 12:10:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:10:07,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 200 [2022-07-19 12:10:07,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:07,474 INFO L225 Difference]: With dead ends: 10559 [2022-07-19 12:10:07,474 INFO L226 Difference]: Without dead ends: 6765 [2022-07-19 12:10:07,482 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 [2022-07-19 12:10:07,487 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 692 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:07,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 714 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 12:10:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2022-07-19 12:10:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 6763. [2022-07-19 12:10:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3571428571428572) internal successors, (9177), 6762 states have internal predecessors, (9177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9177 transitions. [2022-07-19 12:10:07,597 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9177 transitions. Word has length 200 [2022-07-19 12:10:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:07,597 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9177 transitions. [2022-07-19 12:10:07,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9177 transitions. [2022-07-19 12:10:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-07-19 12:10:07,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:07,600 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:10:07,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 12:10:07,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:07,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:07,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1172604746, now seen corresponding path program 1 times [2022-07-19 12:10:07,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:07,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97587243] [2022-07-19 12:10:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:07,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-19 12:10:07,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:07,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97587243] [2022-07-19 12:10:07,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97587243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:07,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:07,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:10:07,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542243149] [2022-07-19 12:10:07,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:07,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:07,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:07,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:07,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:07,791 INFO L87 Difference]: Start difference. First operand 6763 states and 9177 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:09,966 INFO L93 Difference]: Finished difference Result 16530 states and 23478 transitions. [2022-07-19 12:10:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:09,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 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 270 [2022-07-19 12:10:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:10,016 INFO L225 Difference]: With dead ends: 16530 [2022-07-19 12:10:10,017 INFO L226 Difference]: Without dead ends: 9769 [2022-07-19 12:10:10,046 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 [2022-07-19 12:10:10,051 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:10,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 390 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:10:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2022-07-19 12:10:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2022-07-19 12:10:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3653491705918492) internal successors, (13334), 9766 states have internal predecessors, (13334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13334 transitions. [2022-07-19 12:10:10,264 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13334 transitions. Word has length 270 [2022-07-19 12:10:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:10,266 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 13334 transitions. [2022-07-19 12:10:10,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13334 transitions. [2022-07-19 12:10:10,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-19 12:10:10,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:10,271 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:10:10,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 12:10:10,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:10,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1696081658, now seen corresponding path program 1 times [2022-07-19 12:10:10,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:10,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115475902] [2022-07-19 12:10:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:10,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-19 12:10:10,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:10,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115475902] [2022-07-19 12:10:10,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115475902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:10,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:10,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:10:10,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7832654] [2022-07-19 12:10:10,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:10,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:10,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:10,419 INFO L87 Difference]: Start difference. First operand 9767 states and 13334 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:12,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:12,828 INFO L93 Difference]: Finished difference Result 27042 states and 37585 transitions. [2022-07-19 12:10:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:12,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 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 302 [2022-07-19 12:10:12,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:12,858 INFO L225 Difference]: With dead ends: 27042 [2022-07-19 12:10:12,858 INFO L226 Difference]: Without dead ends: 17277 [2022-07-19 12:10:12,865 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 [2022-07-19 12:10:12,866 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:12,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:10:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2022-07-19 12:10:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 15775. [2022-07-19 12:10:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2816026372511728) internal successors, (20216), 15774 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 20216 transitions. [2022-07-19 12:10:13,037 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 20216 transitions. Word has length 302 [2022-07-19 12:10:13,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:13,038 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 20216 transitions. [2022-07-19 12:10:13,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 20216 transitions. [2022-07-19 12:10:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-07-19 12:10:13,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:13,046 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-19 12:10:13,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 12:10:13,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:13,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash -430593398, now seen corresponding path program 1 times [2022-07-19 12:10:13,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:13,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369930988] [2022-07-19 12:10:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 12:10:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:13,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369930988] [2022-07-19 12:10:13,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369930988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:13,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:13,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:13,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279256013] [2022-07-19 12:10:13,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:13,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:13,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:13,231 INFO L87 Difference]: Start difference. First operand 15775 states and 20216 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:15,762 INFO L93 Difference]: Finished difference Result 39809 states and 52170 transitions. [2022-07-19 12:10:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:15,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 381 [2022-07-19 12:10:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:15,791 INFO L225 Difference]: With dead ends: 39809 [2022-07-19 12:10:15,792 INFO L226 Difference]: Without dead ends: 24036 [2022-07-19 12:10:15,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:15,800 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 776 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:15,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 142 Invalid, 3130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:10:15,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2022-07-19 12:10:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 23285. [2022-07-19 12:10:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23285 states, 23284 states have (on average 1.3032554543892803) internal successors, (30345), 23284 states have internal predecessors, (30345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 30345 transitions. [2022-07-19 12:10:16,014 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 30345 transitions. Word has length 381 [2022-07-19 12:10:16,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:16,014 INFO L495 AbstractCegarLoop]: Abstraction has 23285 states and 30345 transitions. [2022-07-19 12:10:16,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 30345 transitions. [2022-07-19 12:10:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-07-19 12:10:16,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:16,021 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, 4, 4, 4, 4, 4, 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, 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] [2022-07-19 12:10:16,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 12:10:16,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:16,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash -144734893, now seen corresponding path program 1 times [2022-07-19 12:10:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:16,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931273002] [2022-07-19 12:10:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:16,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-19 12:10:16,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:16,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931273002] [2022-07-19 12:10:16,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931273002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:16,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:16,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:16,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397554919] [2022-07-19 12:10:16,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:16,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:16,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:16,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:16,134 INFO L87 Difference]: Start difference. First operand 23285 states and 30345 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:18,375 INFO L93 Difference]: Finished difference Result 57082 states and 74478 transitions. [2022-07-19 12:10:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:18,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 398 [2022-07-19 12:10:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:18,433 INFO L225 Difference]: With dead ends: 57082 [2022-07-19 12:10:18,434 INFO L226 Difference]: Without dead ends: 33799 [2022-07-19 12:10:18,451 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 [2022-07-19 12:10:18,453 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 734 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:18,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 217 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 12:10:18,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33799 states. [2022-07-19 12:10:18,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33799 to 33048. [2022-07-19 12:10:18,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33048 states, 33047 states have (on average 1.290797954428541) internal successors, (42657), 33047 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33048 states to 33048 states and 42657 transitions. [2022-07-19 12:10:18,839 INFO L78 Accepts]: Start accepts. Automaton has 33048 states and 42657 transitions. Word has length 398 [2022-07-19 12:10:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:18,840 INFO L495 AbstractCegarLoop]: Abstraction has 33048 states and 42657 transitions. [2022-07-19 12:10:18,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 33048 states and 42657 transitions. [2022-07-19 12:10:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-07-19 12:10:18,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:18,847 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:10:18,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 12:10:18,847 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:18,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1969623213, now seen corresponding path program 1 times [2022-07-19 12:10:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:18,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558626309] [2022-07-19 12:10:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:18,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-19 12:10:18,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:18,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558626309] [2022-07-19 12:10:18,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558626309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:18,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:18,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:18,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325644805] [2022-07-19 12:10:18,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:18,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:18,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:18,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:18,950 INFO L87 Difference]: Start difference. First operand 33048 states and 42657 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:21,785 INFO L93 Difference]: Finished difference Result 89375 states and 116905 transitions. [2022-07-19 12:10:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:21,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 409 [2022-07-19 12:10:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:21,857 INFO L225 Difference]: With dead ends: 89375 [2022-07-19 12:10:21,858 INFO L226 Difference]: Without dead ends: 56329 [2022-07-19 12:10:21,871 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 [2022-07-19 12:10:21,872 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 720 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:21,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 421 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:10:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56329 states. [2022-07-19 12:10:22,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56329 to 54827. [2022-07-19 12:10:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54827 states, 54826 states have (on average 1.2623572757450845) internal successors, (69210), 54826 states have internal predecessors, (69210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54827 states to 54827 states and 69210 transitions. [2022-07-19 12:10:22,403 INFO L78 Accepts]: Start accepts. Automaton has 54827 states and 69210 transitions. Word has length 409 [2022-07-19 12:10:22,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:22,404 INFO L495 AbstractCegarLoop]: Abstraction has 54827 states and 69210 transitions. [2022-07-19 12:10:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 54827 states and 69210 transitions. [2022-07-19 12:10:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-07-19 12:10:22,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:22,414 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:10:22,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 12:10:22,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1831054209, now seen corresponding path program 1 times [2022-07-19 12:10:22,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:22,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229459486] [2022-07-19 12:10:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:22,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-19 12:10:22,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:22,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229459486] [2022-07-19 12:10:22,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229459486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:22,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:22,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:22,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729524710] [2022-07-19 12:10:22,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:22,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:22,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:22,526 INFO L87 Difference]: Start difference. First operand 54827 states and 69210 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:25,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:25,173 INFO L93 Difference]: Finished difference Result 134435 states and 169113 transitions. [2022-07-19 12:10:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:25,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 423 [2022-07-19 12:10:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:25,277 INFO L225 Difference]: With dead ends: 134435 [2022-07-19 12:10:25,277 INFO L226 Difference]: Without dead ends: 79610 [2022-07-19 12:10:25,317 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 [2022-07-19 12:10:25,318 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 663 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:25,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1339 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:10:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79610 states. [2022-07-19 12:10:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79610 to 75855. [2022-07-19 12:10:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75855 states, 75854 states have (on average 1.2253935191288527) internal successors, (92951), 75854 states have internal predecessors, (92951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75855 states to 75855 states and 92951 transitions. [2022-07-19 12:10:26,341 INFO L78 Accepts]: Start accepts. Automaton has 75855 states and 92951 transitions. Word has length 423 [2022-07-19 12:10:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:26,342 INFO L495 AbstractCegarLoop]: Abstraction has 75855 states and 92951 transitions. [2022-07-19 12:10:26,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 75855 states and 92951 transitions. [2022-07-19 12:10:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-07-19 12:10:26,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:26,349 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:10:26,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 12:10:26,350 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1583971455, now seen corresponding path program 1 times [2022-07-19 12:10:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:26,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893237153] [2022-07-19 12:10:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:26,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-19 12:10:26,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:26,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893237153] [2022-07-19 12:10:26,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893237153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:26,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:26,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:26,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132283340] [2022-07-19 12:10:26,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:26,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:26,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:26,690 INFO L87 Difference]: Start difference. First operand 75855 states and 92951 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:29,334 INFO L93 Difference]: Finished difference Result 164475 states and 200519 transitions. [2022-07-19 12:10:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:29,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 435 [2022-07-19 12:10:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:29,462 INFO L225 Difference]: With dead ends: 164475 [2022-07-19 12:10:29,462 INFO L226 Difference]: Without dead ends: 88622 [2022-07-19 12:10:29,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:29,514 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 805 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:29,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 910 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:10:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88622 states. [2022-07-19 12:10:30,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88622 to 84867. [2022-07-19 12:10:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84867 states, 84866 states have (on average 1.180802677161643) internal successors, (100210), 84866 states have internal predecessors, (100210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:30,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84867 states to 84867 states and 100210 transitions. [2022-07-19 12:10:30,725 INFO L78 Accepts]: Start accepts. Automaton has 84867 states and 100210 transitions. Word has length 435 [2022-07-19 12:10:30,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:30,726 INFO L495 AbstractCegarLoop]: Abstraction has 84867 states and 100210 transitions. [2022-07-19 12:10:30,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:30,726 INFO L276 IsEmpty]: Start isEmpty. Operand 84867 states and 100210 transitions. [2022-07-19 12:10:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-07-19 12:10:30,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:30,734 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, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:10:30,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 12:10:30,734 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:30,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:30,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1917863277, now seen corresponding path program 1 times [2022-07-19 12:10:30,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:30,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768981853] [2022-07-19 12:10:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-07-19 12:10:30,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:30,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768981853] [2022-07-19 12:10:30,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768981853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:30,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:30,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:30,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140826823] [2022-07-19 12:10:30,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:30,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:30,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:30,956 INFO L87 Difference]: Start difference. First operand 84867 states and 100210 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:33,393 INFO L93 Difference]: Finished difference Result 198270 states and 234749 transitions. [2022-07-19 12:10:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:33,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 438 [2022-07-19 12:10:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:33,542 INFO L225 Difference]: With dead ends: 198270 [2022-07-19 12:10:33,542 INFO L226 Difference]: Without dead ends: 113405 [2022-07-19 12:10:33,583 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 [2022-07-19 12:10:33,584 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 694 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:33,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1267 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 12:10:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113405 states. [2022-07-19 12:10:34,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113405 to 102891. [2022-07-19 12:10:34,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102891 states, 102890 states have (on average 1.1585188064923706) internal successors, (119200), 102890 states have internal predecessors, (119200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102891 states to 102891 states and 119200 transitions. [2022-07-19 12:10:35,089 INFO L78 Accepts]: Start accepts. Automaton has 102891 states and 119200 transitions. Word has length 438 [2022-07-19 12:10:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:35,089 INFO L495 AbstractCegarLoop]: Abstraction has 102891 states and 119200 transitions. [2022-07-19 12:10:35,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:35,090 INFO L276 IsEmpty]: Start isEmpty. Operand 102891 states and 119200 transitions. [2022-07-19 12:10:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-19 12:10:35,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:35,366 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-19 12:10:35,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 12:10:35,367 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:35,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1911564865, now seen corresponding path program 1 times [2022-07-19 12:10:35,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:35,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273591200] [2022-07-19 12:10:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-19 12:10:35,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:35,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273591200] [2022-07-19 12:10:35,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273591200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:35,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:35,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:35,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257388058] [2022-07-19 12:10:35,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:35,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:35,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:35,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:35,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:35,497 INFO L87 Difference]: Start difference. First operand 102891 states and 119200 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) [2022-07-19 12:10:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:38,020 INFO L93 Difference]: Finished difference Result 208033 states and 240666 transitions. [2022-07-19 12:10:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:38,020 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 479 [2022-07-19 12:10:38,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:38,176 INFO L225 Difference]: With dead ends: 208033 [2022-07-19 12:10:38,177 INFO L226 Difference]: Without dead ends: 105144 [2022-07-19 12:10:38,221 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 [2022-07-19 12:10:38,222 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 681 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:38,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 220 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 12:10:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105144 states. [2022-07-19 12:10:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105144 to 102140. [2022-07-19 12:10:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102140 states, 102139 states have (on average 1.121530463388128) internal successors, (114552), 102139 states have internal predecessors, (114552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102140 states to 102140 states and 114552 transitions. [2022-07-19 12:10:39,581 INFO L78 Accepts]: Start accepts. Automaton has 102140 states and 114552 transitions. Word has length 479 [2022-07-19 12:10:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:39,582 INFO L495 AbstractCegarLoop]: Abstraction has 102140 states and 114552 transitions. [2022-07-19 12:10:39,582 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-07-19 12:10:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 102140 states and 114552 transitions. [2022-07-19 12:10:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-07-19 12:10:39,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:39,590 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:10:39,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 12:10:39,590 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash 736788866, now seen corresponding path program 1 times [2022-07-19 12:10:39,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:39,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669775735] [2022-07-19 12:10:39,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:39,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-19 12:10:39,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:39,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669775735] [2022-07-19 12:10:39,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669775735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:39,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:39,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:39,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601106465] [2022-07-19 12:10:39,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:39,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:39,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:39,976 INFO L87 Difference]: Start difference. First operand 102140 states and 114552 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:43,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:43,024 INFO L93 Difference]: Finished difference Result 204278 states and 229102 transitions. [2022-07-19 12:10:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2022-07-19 12:10:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:43,167 INFO L225 Difference]: With dead ends: 204278 [2022-07-19 12:10:43,168 INFO L226 Difference]: Without dead ends: 102140 [2022-07-19 12:10:43,215 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 [2022-07-19 12:10:43,217 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 567 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:43,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1284 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:10:43,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102140 states. [2022-07-19 12:10:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102140 to 96132. [2022-07-19 12:10:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96132 states, 96131 states have (on average 1.088764290395398) internal successors, (104664), 96131 states have internal predecessors, (104664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96132 states to 96132 states and 104664 transitions. [2022-07-19 12:10:44,547 INFO L78 Accepts]: Start accepts. Automaton has 96132 states and 104664 transitions. Word has length 501 [2022-07-19 12:10:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:44,548 INFO L495 AbstractCegarLoop]: Abstraction has 96132 states and 104664 transitions. [2022-07-19 12:10:44,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 96132 states and 104664 transitions. [2022-07-19 12:10:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2022-07-19 12:10:44,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:44,556 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:10:44,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 12:10:44,556 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:44,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:44,557 INFO L85 PathProgramCache]: Analyzing trace with hash 901067136, now seen corresponding path program 1 times [2022-07-19 12:10:44,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:44,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900000576] [2022-07-19 12:10:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:44,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-19 12:10:44,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:44,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900000576] [2022-07-19 12:10:44,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900000576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:44,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:44,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:44,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352819344] [2022-07-19 12:10:44,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:44,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:44,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:44,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:44,702 INFO L87 Difference]: Start difference. First operand 96132 states and 104664 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) [2022-07-19 12:10:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:47,622 INFO L93 Difference]: Finished difference Result 226808 states and 248397 transitions. [2022-07-19 12:10:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:47,622 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 516 [2022-07-19 12:10:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:47,795 INFO L225 Difference]: With dead ends: 226808 [2022-07-19 12:10:47,796 INFO L226 Difference]: Without dead ends: 130678 [2022-07-19 12:10:47,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:47,862 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 674 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:47,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 117 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:10:47,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130678 states. [2022-07-19 12:10:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130678 to 129176. [2022-07-19 12:10:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129176 states, 129175 states have (on average 1.088531062512096) internal successors, (140611), 129175 states have internal predecessors, (140611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129176 states to 129176 states and 140611 transitions. [2022-07-19 12:10:49,414 INFO L78 Accepts]: Start accepts. Automaton has 129176 states and 140611 transitions. Word has length 516 [2022-07-19 12:10:49,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:49,414 INFO L495 AbstractCegarLoop]: Abstraction has 129176 states and 140611 transitions. [2022-07-19 12:10:49,415 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-07-19 12:10:49,415 INFO L276 IsEmpty]: Start isEmpty. Operand 129176 states and 140611 transitions. [2022-07-19 12:10:49,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-07-19 12:10:49,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:49,422 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2022-07-19 12:10:49,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 12:10:49,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1834353811, now seen corresponding path program 1 times [2022-07-19 12:10:49,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:49,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427620595] [2022-07-19 12:10:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-07-19 12:10:49,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:49,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427620595] [2022-07-19 12:10:49,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427620595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:49,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:49,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:49,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020533706] [2022-07-19 12:10:49,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:49,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:49,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:49,778 INFO L87 Difference]: Start difference. First operand 129176 states and 140611 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:52,531 INFO L93 Difference]: Finished difference Result 277125 states and 301937 transitions. [2022-07-19 12:10:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:52,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 519 [2022-07-19 12:10:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:52,715 INFO L225 Difference]: With dead ends: 277125 [2022-07-19 12:10:52,715 INFO L226 Difference]: Without dead ends: 147951 [2022-07-19 12:10:52,768 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 [2022-07-19 12:10:52,768 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 835 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:52,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1117 Invalid, 2600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 12:10:52,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147951 states. [2022-07-19 12:10:54,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147951 to 145698. [2022-07-19 12:10:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145698 states, 145697 states have (on average 1.082609799789975) internal successors, (157733), 145697 states have internal predecessors, (157733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145698 states to 145698 states and 157733 transitions. [2022-07-19 12:10:54,674 INFO L78 Accepts]: Start accepts. Automaton has 145698 states and 157733 transitions. Word has length 519 [2022-07-19 12:10:54,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:10:54,675 INFO L495 AbstractCegarLoop]: Abstraction has 145698 states and 157733 transitions. [2022-07-19 12:10:54,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 145698 states and 157733 transitions. [2022-07-19 12:10:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2022-07-19 12:10:54,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:10:54,686 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-19 12:10:54,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 12:10:54,687 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:10:54,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:10:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1568793044, now seen corresponding path program 1 times [2022-07-19 12:10:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:10:54,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130017489] [2022-07-19 12:10:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:10:54,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:10:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:10:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-19 12:10:54,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:10:54,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130017489] [2022-07-19 12:10:54,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130017489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:10:54,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:10:54,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:10:54,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248117451] [2022-07-19 12:10:54,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:10:54,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:10:54,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:10:54,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:10:54,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:10:54,823 INFO L87 Difference]: Start difference. First operand 145698 states and 157733 transitions. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:10:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:10:57,812 INFO L93 Difference]: Finished difference Result 307916 states and 332767 transitions. [2022-07-19 12:10:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:10:57,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 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 592 [2022-07-19 12:10:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:10:58,043 INFO L225 Difference]: With dead ends: 307916 [2022-07-19 12:10:58,043 INFO L226 Difference]: Without dead ends: 162220 [2022-07-19 12:10:58,467 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 [2022-07-19 12:10:58,468 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 591 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:10:58,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1220 Invalid, 2655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 12:10:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162220 states. [2022-07-19 12:11:00,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162220 to 158465. [2022-07-19 12:11:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158465 states, 158464 states have (on average 1.0735372071890146) internal successors, (170117), 158464 states have internal predecessors, (170117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:11:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158465 states to 158465 states and 170117 transitions. [2022-07-19 12:11:00,399 INFO L78 Accepts]: Start accepts. Automaton has 158465 states and 170117 transitions. Word has length 592 [2022-07-19 12:11:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:11:00,399 INFO L495 AbstractCegarLoop]: Abstraction has 158465 states and 170117 transitions. [2022-07-19 12:11:00,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:11:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 158465 states and 170117 transitions. [2022-07-19 12:11:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-07-19 12:11:00,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:11:00,727 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-19 12:11:00,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 12:11:00,728 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:11:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:11:00,728 INFO L85 PathProgramCache]: Analyzing trace with hash 862578827, now seen corresponding path program 1 times [2022-07-19 12:11:00,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:11:00,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491878296] [2022-07-19 12:11:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:11:00,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:11:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:11:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 812 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-19 12:11:00,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:11:00,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491878296] [2022-07-19 12:11:00,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491878296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:11:00,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:11:00,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:11:00,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573546519] [2022-07-19 12:11:00,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:11:00,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:11:00,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:11:00,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:11:00,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:11:00,917 INFO L87 Difference]: Start difference. First operand 158465 states and 170117 transitions. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:11:03,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:11:03,745 INFO L93 Difference]: Finished difference Result 326691 states and 350424 transitions. [2022-07-19 12:11:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:11:03,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 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 [2022-07-19 12:11:03,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:11:03,951 INFO L225 Difference]: With dead ends: 326691 [2022-07-19 12:11:03,951 INFO L226 Difference]: Without dead ends: 168228 [2022-07-19 12:11:04,009 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 [2022-07-19 12:11:04,010 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 605 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:11:04,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1300 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2156 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 12:11:04,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168228 states. [2022-07-19 12:11:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168228 to 161469. [2022-07-19 12:11:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161469 states, 161468 states have (on average 1.0722248371194292) internal successors, (173130), 161468 states have internal predecessors, (173130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:11:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161469 states to 161469 states and 173130 transitions. [2022-07-19 12:11:06,306 INFO L78 Accepts]: Start accepts. Automaton has 161469 states and 173130 transitions. Word has length 629 [2022-07-19 12:11:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:11:06,307 INFO L495 AbstractCegarLoop]: Abstraction has 161469 states and 173130 transitions. [2022-07-19 12:11:06,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:11:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 161469 states and 173130 transitions. [2022-07-19 12:11:06,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-07-19 12:11:06,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:11:06,319 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:11:06,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 12:11:06,319 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:11:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:11:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1196794275, now seen corresponding path program 1 times [2022-07-19 12:11:06,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:11:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530521140] [2022-07-19 12:11:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:11:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:11:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:11:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 1065 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-19 12:11:06,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:11:06,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530521140] [2022-07-19 12:11:06,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530521140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:11:06,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:11:06,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:11:06,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256755937] [2022-07-19 12:11:06,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:11:06,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:11:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:11:06,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:11:06,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:11:06,475 INFO L87 Difference]: Start difference. First operand 161469 states and 173130 transitions. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:11:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:11:10,107 INFO L93 Difference]: Finished difference Result 332699 states and 356422 transitions. [2022-07-19 12:11:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:11:10,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 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 648 [2022-07-19 12:11:10,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:11:10,354 INFO L225 Difference]: With dead ends: 332699 [2022-07-19 12:11:10,354 INFO L226 Difference]: Without dead ends: 170481 [2022-07-19 12:11:10,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:11:10,804 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 1307 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5416 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 5623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 5416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:11:10,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1322 Invalid, 5623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 5416 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 12:11:10,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170481 states. [2022-07-19 12:11:12,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170481 to 170481. [2022-07-19 12:11:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170481 states, 170480 states have (on average 1.067562177381511) internal successors, (181998), 170480 states have internal predecessors, (181998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:11:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170481 states to 170481 states and 181998 transitions. [2022-07-19 12:11:13,078 INFO L78 Accepts]: Start accepts. Automaton has 170481 states and 181998 transitions. Word has length 648 [2022-07-19 12:11:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:11:13,078 INFO L495 AbstractCegarLoop]: Abstraction has 170481 states and 181998 transitions. [2022-07-19 12:11:13,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:11:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 170481 states and 181998 transitions.