./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label35.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_label35.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 d2c88e57f95302454037a8b8cda92c4c6c828f58a1c1642f9d0e242d65cc598d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:04:28,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:04:28,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:04:28,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:04:28,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:04:28,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:04:28,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:04:28,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:04:28,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:04:28,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:04:28,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:04:28,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:04:28,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:04:28,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:04:28,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:04:28,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:04:28,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:04:28,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:04:28,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:04:28,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:04:28,548 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:04:28,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:04:28,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:04:28,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:04:28,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:04:28,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:04:28,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:04:28,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:04:28,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:04:28,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:04:28,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:04:28,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:04:28,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:04:28,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:04:28,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:04:28,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:04:28,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:04:28,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:04:28,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:04:28,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:04:28,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:04:28,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:04:28,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:04:28,589 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:04:28,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:04:28,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:04:28,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:04:28,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:04:28,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:04:28,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:04:28,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:04:28,598 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:04:28,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:04:28,598 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:04:28,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:04:28,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:04:28,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:04:28,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:04:28,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:04:28,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:04:28,600 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:04:28,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:04:28,600 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:04:28,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:04:28,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:04:28,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:04:28,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:04:28,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:04:28,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:04:28,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:04:28,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:04:28,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:04:28,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:04:28,602 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:04:28,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:04:28,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:04:28,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2c88e57f95302454037a8b8cda92c4c6c828f58a1c1642f9d0e242d65cc598d [2022-07-12 01:04:28,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:04:28,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:04:28,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:04:28,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:04:28,867 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:04:28,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label35.c [2022-07-12 01:04:28,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00783c924/c7d6df739b984deb8d9ce9190f940faf/FLAG4686332ab [2022-07-12 01:04:29,440 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:04:29,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label35.c [2022-07-12 01:04:29,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00783c924/c7d6df739b984deb8d9ce9190f940faf/FLAG4686332ab [2022-07-12 01:04:29,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00783c924/c7d6df739b984deb8d9ce9190f940faf [2022-07-12 01:04:29,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:04:29,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:04:29,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:04:29,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:04:29,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:04:29,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:04:29" (1/1) ... [2022-07-12 01:04:29,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377f6b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:29, skipping insertion in model container [2022-07-12 01:04:29,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:04:29" (1/1) ... [2022-07-12 01:04:29,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:04:29,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:04:30,086 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_label35.c[1310,1323] [2022-07-12 01:04:30,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:04:30,676 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:04:30,688 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_label35.c[1310,1323] [2022-07-12 01:04:31,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:04:31,031 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:04:31,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31 WrapperNode [2022-07-12 01:04:31,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:04:31,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:04:31,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:04:31,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:04:31,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,351 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-12 01:04:31,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:04:31,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:04:31,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:04:31,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:04:31,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:04:31,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:04:31,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:04:31,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:04:31,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (1/1) ... [2022-07-12 01:04:31,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:04:31,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:04:31,721 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) [2022-07-12 01:04:31,730 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 [2022-07-12 01:04:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:04:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:04:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:04:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:04:31,794 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:04:31,795 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:04:34,588 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:04:34,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:04:34,600 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:04:34,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:04:34 BoogieIcfgContainer [2022-07-12 01:04:34,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:04:34,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:04:34,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:04:34,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:04:34,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:04:29" (1/3) ... [2022-07-12 01:04:34,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e0208b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:04:34, skipping insertion in model container [2022-07-12 01:04:34,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:04:31" (2/3) ... [2022-07-12 01:04:34,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e0208b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:04:34, skipping insertion in model container [2022-07-12 01:04:34,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:04:34" (3/3) ... [2022-07-12 01:04:34,608 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label35.c [2022-07-12 01:04:34,649 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:04:34,650 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:04:34,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:04:34,710 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@3f60bba8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e9a398d [2022-07-12 01:04:34,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:04:34,715 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) [2022-07-12 01:04:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 01:04:34,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:34,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:34,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:34,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:34,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1810726993, now seen corresponding path program 1 times [2022-07-12 01:04:34,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:34,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369004541] [2022-07-12 01:04:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:04:34,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:34,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369004541] [2022-07-12 01:04:34,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369004541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:34,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:34,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:04:34,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981694686] [2022-07-12 01:04:34,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:34,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:34,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:34,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:34,880 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:37,636 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-07-12 01:04:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:37,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-07-12 01:04:37,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:37,665 INFO L225 Difference]: With dead ends: 2388 [2022-07-12 01:04:37,665 INFO L226 Difference]: Without dead ends: 1506 [2022-07-12 01:04:37,672 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 [2022-07-12 01:04:37,674 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 827 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:37,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 01:04:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-12 01:04:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-12 01:04:37,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2022-07-12 01:04:37,756 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 7 [2022-07-12 01:04:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:37,756 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2022-07-12 01:04:37,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2022-07-12 01:04:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-12 01:04:37,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:37,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:37,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:04:37,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:37,759 INFO L85 PathProgramCache]: Analyzing trace with hash 26642083, now seen corresponding path program 1 times [2022-07-12 01:04:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:37,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806669966] [2022-07-12 01:04:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:04:37,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:37,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806669966] [2022-07-12 01:04:37,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806669966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:37,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:37,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999981875] [2022-07-12 01:04:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:37,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:37,855 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:40,370 INFO L93 Difference]: Finished difference Result 4512 states and 7393 transitions. [2022-07-12 01:04:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:40,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-07-12 01:04:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:40,380 INFO L225 Difference]: With dead ends: 4512 [2022-07-12 01:04:40,380 INFO L226 Difference]: Without dead ends: 3008 [2022-07-12 01:04:40,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:40,387 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 772 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:40,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1391 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:04:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-07-12 01:04:40,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-07-12 01:04:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.3634852011972065) internal successors, (4100), 3007 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4100 transitions. [2022-07-12 01:04:40,439 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4100 transitions. Word has length 78 [2022-07-12 01:04:40,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:40,440 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4100 transitions. [2022-07-12 01:04:40,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:40,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4100 transitions. [2022-07-12 01:04:40,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-12 01:04:40,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:40,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:40,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:04:40,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash 940371373, now seen corresponding path program 1 times [2022-07-12 01:04:40,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:40,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053061947] [2022-07-12 01:04:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:40,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:04:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:40,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053061947] [2022-07-12 01:04:40,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053061947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:40,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:40,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:04:40,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724597332] [2022-07-12 01:04:40,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:40,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:40,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:40,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:40,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:40,540 INFO L87 Difference]: Start difference. First operand 3008 states and 4100 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:42,919 INFO L93 Difference]: Finished difference Result 7516 states and 10661 transitions. [2022-07-12 01:04:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:42,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-12 01:04:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:42,933 INFO L225 Difference]: With dead ends: 7516 [2022-07-12 01:04:42,934 INFO L226 Difference]: Without dead ends: 4510 [2022-07-12 01:04:42,939 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 [2022-07-12 01:04:42,944 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 748 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:42,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 520 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 01:04:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-07-12 01:04:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2022-07-12 01:04:43,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.3251275227323132) internal successors, (5975), 4509 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5975 transitions. [2022-07-12 01:04:43,014 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5975 transitions. Word has length 81 [2022-07-12 01:04:43,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:43,016 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 5975 transitions. [2022-07-12 01:04:43,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:43,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5975 transitions. [2022-07-12 01:04:43,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 01:04:43,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:43,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:43,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:04:43,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:43,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:43,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1146415334, now seen corresponding path program 1 times [2022-07-12 01:04:43,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:43,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394990506] [2022-07-12 01:04:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:43,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:04:43,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:43,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394990506] [2022-07-12 01:04:43,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394990506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:43,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:43,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:43,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571858194] [2022-07-12 01:04:43,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:43,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:04:43,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:04:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:04:43,168 INFO L87 Difference]: Start difference. First operand 4510 states and 5975 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:46,900 INFO L93 Difference]: Finished difference Result 14275 states and 18791 transitions. [2022-07-12 01:04:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:04:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-12 01:04:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:46,927 INFO L225 Difference]: With dead ends: 14275 [2022-07-12 01:04:46,927 INFO L226 Difference]: Without dead ends: 9767 [2022-07-12 01:04:46,933 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 [2022-07-12 01:04:46,934 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 2160 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4749 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 5527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 4749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:46,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2160 Valid, 187 Invalid, 5527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 4749 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 01:04:46,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-07-12 01:04:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9016. [2022-07-12 01:04:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.303716028840821) internal successors, (11753), 9015 states have internal predecessors, (11753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11753 transitions. [2022-07-12 01:04:47,049 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11753 transitions. Word has length 92 [2022-07-12 01:04:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:47,049 INFO L495 AbstractCegarLoop]: Abstraction has 9016 states and 11753 transitions. [2022-07-12 01:04:47,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11753 transitions. [2022-07-12 01:04:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-12 01:04:47,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:47,053 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:47,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 01:04:47,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1006329333, now seen corresponding path program 1 times [2022-07-12 01:04:47,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:47,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714631437] [2022-07-12 01:04:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:47,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 01:04:47,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:47,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714631437] [2022-07-12 01:04:47,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714631437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:47,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:47,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:47,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595455668] [2022-07-12 01:04:47,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:47,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:04:47,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:04:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:04:47,157 INFO L87 Difference]: Start difference. First operand 9016 states and 11753 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:50,080 INFO L93 Difference]: Finished difference Result 22575 states and 30203 transitions. [2022-07-12 01:04:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:04:50,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 211 [2022-07-12 01:04:50,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:50,111 INFO L225 Difference]: With dead ends: 22575 [2022-07-12 01:04:50,111 INFO L226 Difference]: Without dead ends: 12773 [2022-07-12 01:04:50,123 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 [2022-07-12 01:04:50,124 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 706 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:50,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 710 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 01:04:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12773 states. [2022-07-12 01:04:50,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12773 to 12771. [2022-07-12 01:04:50,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12771 states, 12770 states have (on average 1.2170712607674237) internal successors, (15542), 12770 states have internal predecessors, (15542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 15542 transitions. [2022-07-12 01:04:50,374 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 15542 transitions. Word has length 211 [2022-07-12 01:04:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:50,376 INFO L495 AbstractCegarLoop]: Abstraction has 12771 states and 15542 transitions. [2022-07-12 01:04:50,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 15542 transitions. [2022-07-12 01:04:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-12 01:04:50,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:50,381 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:50,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:04:50,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1108247131, now seen corresponding path program 1 times [2022-07-12 01:04:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:50,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671053304] [2022-07-12 01:04:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:50,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 41 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:04:50,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:50,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671053304] [2022-07-12 01:04:50,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671053304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:04:50,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128344661] [2022-07-12 01:04:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:50,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:04:50,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:04:50,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:04:50,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 01:04:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:50,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:04:50,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:04:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 01:04:50,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:04:50,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128344661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:50,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:04:50,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-12 01:04:50,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351045411] [2022-07-12 01:04:50,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:50,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:50,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:04:50,735 INFO L87 Difference]: Start difference. First operand 12771 states and 15542 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:53,391 INFO L93 Difference]: Finished difference Result 32299 states and 40251 transitions. [2022-07-12 01:04:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:53,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 237 [2022-07-12 01:04:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:53,424 INFO L225 Difference]: With dead ends: 32299 [2022-07-12 01:04:53,424 INFO L226 Difference]: Without dead ends: 20281 [2022-07-12 01:04:53,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:04:53,439 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 805 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 3045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:53,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 972 Invalid, 3045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 01:04:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20281 states. [2022-07-12 01:04:53,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20281 to 18779. [2022-07-12 01:04:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.2514644797102994) internal successors, (23500), 18778 states have internal predecessors, (23500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 23500 transitions. [2022-07-12 01:04:53,735 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 23500 transitions. Word has length 237 [2022-07-12 01:04:53,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:53,736 INFO L495 AbstractCegarLoop]: Abstraction has 18779 states and 23500 transitions. [2022-07-12 01:04:53,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:53,737 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 23500 transitions. [2022-07-12 01:04:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-07-12 01:04:53,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:53,743 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:04:53,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 01:04:53,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-12 01:04:53,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1166393973, now seen corresponding path program 1 times [2022-07-12 01:04:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:53,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137473883] [2022-07-12 01:04:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 01:04:54,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:54,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137473883] [2022-07-12 01:04:54,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137473883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:54,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:54,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:54,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404482607] [2022-07-12 01:04:54,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:54,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:54,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:54,110 INFO L87 Difference]: Start difference. First operand 18779 states and 23500 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) [2022-07-12 01:04:56,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:56,734 INFO L93 Difference]: Finished difference Result 50323 states and 64012 transitions. [2022-07-12 01:04:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:56,735 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 387 [2022-07-12 01:04:56,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:56,775 INFO L225 Difference]: With dead ends: 50323 [2022-07-12 01:04:56,775 INFO L226 Difference]: Without dead ends: 32297 [2022-07-12 01:04:56,789 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 [2022-07-12 01:04:56,789 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 671 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:56,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 316 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:04:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32297 states. [2022-07-12 01:04:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32297 to 32297. [2022-07-12 01:04:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32297 states, 32296 states have (on average 1.21916026752539) internal successors, (39374), 32296 states have internal predecessors, (39374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32297 states to 32297 states and 39374 transitions. [2022-07-12 01:04:57,112 INFO L78 Accepts]: Start accepts. Automaton has 32297 states and 39374 transitions. Word has length 387 [2022-07-12 01:04:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:57,113 INFO L495 AbstractCegarLoop]: Abstraction has 32297 states and 39374 transitions. [2022-07-12 01:04:57,113 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) [2022-07-12 01:04:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 32297 states and 39374 transitions. [2022-07-12 01:04:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-07-12 01:04:57,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:57,120 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:57,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 01:04:57,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1975100085, now seen corresponding path program 1 times [2022-07-12 01:04:57,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:57,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573176317] [2022-07-12 01:04:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 01:04:57,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:57,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573176317] [2022-07-12 01:04:57,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573176317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:57,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:57,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:57,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211129795] [2022-07-12 01:04:57,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:57,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:57,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:57,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:57,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:57,244 INFO L87 Difference]: Start difference. First operand 32297 states and 39374 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:04:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:59,748 INFO L93 Difference]: Finished difference Result 75857 states and 94531 transitions. [2022-07-12 01:04:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:59,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 396 [2022-07-12 01:04:59,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:59,801 INFO L225 Difference]: With dead ends: 75857 [2022-07-12 01:04:59,801 INFO L226 Difference]: Without dead ends: 44313 [2022-07-12 01:04:59,831 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 [2022-07-12 01:04:59,831 INFO L413 NwaCegarLoop]: 1278 mSDtfsCounter, 610 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:59,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1286 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 01:04:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44313 states. [2022-07-12 01:05:00,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44313 to 44313. [2022-07-12 01:05:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44313 states, 44312 states have (on average 1.1909189384365408) internal successors, (52772), 44312 states have internal predecessors, (52772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44313 states to 44313 states and 52772 transitions. [2022-07-12 01:05:00,400 INFO L78 Accepts]: Start accepts. Automaton has 44313 states and 52772 transitions. Word has length 396 [2022-07-12 01:05:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:00,400 INFO L495 AbstractCegarLoop]: Abstraction has 44313 states and 52772 transitions. [2022-07-12 01:05:00,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 44313 states and 52772 transitions. [2022-07-12 01:05:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-07-12 01:05:00,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:00,407 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:05:00,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 01:05:00,408 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 762444563, now seen corresponding path program 1 times [2022-07-12 01:05:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:00,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856686887] [2022-07-12 01:05:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-07-12 01:05:00,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:00,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856686887] [2022-07-12 01:05:00,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856686887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:00,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:00,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:05:00,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596548233] [2022-07-12 01:05:00,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:00,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:00,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:00,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:05:00,540 INFO L87 Difference]: Start difference. First operand 44313 states and 52772 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:03,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:03,213 INFO L93 Difference]: Finished difference Result 120168 states and 144292 transitions. [2022-07-12 01:05:03,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:03,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 408 [2022-07-12 01:05:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:03,296 INFO L225 Difference]: With dead ends: 120168 [2022-07-12 01:05:03,296 INFO L226 Difference]: Without dead ends: 71351 [2022-07-12 01:05:03,330 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 [2022-07-12 01:05:03,331 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 817 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:03,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 323 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 01:05:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71351 states. [2022-07-12 01:05:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71351 to 66092. [2022-07-12 01:05:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66092 states, 66091 states have (on average 1.1548168434431314) internal successors, (76323), 66091 states have internal predecessors, (76323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66092 states to 66092 states and 76323 transitions. [2022-07-12 01:05:04,158 INFO L78 Accepts]: Start accepts. Automaton has 66092 states and 76323 transitions. Word has length 408 [2022-07-12 01:05:04,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:04,159 INFO L495 AbstractCegarLoop]: Abstraction has 66092 states and 76323 transitions. [2022-07-12 01:05:04,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 66092 states and 76323 transitions. [2022-07-12 01:05:04,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-07-12 01:05:04,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:04,165 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:05:04,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 01:05:04,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:04,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:04,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1744467404, now seen corresponding path program 1 times [2022-07-12 01:05:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:04,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287223488] [2022-07-12 01:05:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:04,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 01:05:04,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:04,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287223488] [2022-07-12 01:05:04,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287223488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:04,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:04,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:05:04,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383128897] [2022-07-12 01:05:04,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:04,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:04,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:04,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:05:04,501 INFO L87 Difference]: Start difference. First operand 66092 states and 76323 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:07,316 INFO L93 Difference]: Finished difference Result 147953 states and 171496 transitions. [2022-07-12 01:05:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:07,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 425 [2022-07-12 01:05:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:07,406 INFO L225 Difference]: With dead ends: 147953 [2022-07-12 01:05:07,406 INFO L226 Difference]: Without dead ends: 82614 [2022-07-12 01:05:07,438 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 [2022-07-12 01:05:07,438 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 696 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:07,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1264 Invalid, 2679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 01:05:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82614 states. [2022-07-12 01:05:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82614 to 78859. [2022-07-12 01:05:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78859 states, 78858 states have (on average 1.1429151132415227) internal successors, (90128), 78858 states have internal predecessors, (90128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78859 states to 78859 states and 90128 transitions. [2022-07-12 01:05:08,275 INFO L78 Accepts]: Start accepts. Automaton has 78859 states and 90128 transitions. Word has length 425 [2022-07-12 01:05:08,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:08,275 INFO L495 AbstractCegarLoop]: Abstraction has 78859 states and 90128 transitions. [2022-07-12 01:05:08,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:08,275 INFO L276 IsEmpty]: Start isEmpty. Operand 78859 states and 90128 transitions. [2022-07-12 01:05:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-07-12 01:05:08,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:08,280 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-12 01:05:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 01:05:08,280 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1268285029, now seen corresponding path program 1 times [2022-07-12 01:05:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:08,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213988313] [2022-07-12 01:05:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:08,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 270 proven. 5 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-12 01:05:08,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:08,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213988313] [2022-07-12 01:05:08,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213988313] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:05:08,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66247746] [2022-07-12 01:05:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:08,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:05:08,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:05:08,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:05:08,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 01:05:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:08,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:05:08,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:05:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-12 01:05:08,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:05:08,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66247746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:08,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:05:08,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 01:05:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113996395] [2022-07-12 01:05:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:08,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:08,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 01:05:08,899 INFO L87 Difference]: Start difference. First operand 78859 states and 90128 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:11,465 INFO L93 Difference]: Finished difference Result 156965 states and 179498 transitions. [2022-07-12 01:05:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:11,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 428 [2022-07-12 01:05:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:11,570 INFO L225 Difference]: With dead ends: 156965 [2022-07-12 01:05:11,570 INFO L226 Difference]: Without dead ends: 78859 [2022-07-12 01:05:11,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 01:05:11,621 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 644 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:11,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1153 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 01:05:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78859 states. [2022-07-12 01:05:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78859 to 75855. [2022-07-12 01:05:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75855 states, 75854 states have (on average 1.0916761146412846) internal successors, (82808), 75854 states have internal predecessors, (82808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75855 states to 75855 states and 82808 transitions. [2022-07-12 01:05:12,558 INFO L78 Accepts]: Start accepts. Automaton has 75855 states and 82808 transitions. Word has length 428 [2022-07-12 01:05:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:12,559 INFO L495 AbstractCegarLoop]: Abstraction has 75855 states and 82808 transitions. [2022-07-12 01:05:12,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 75855 states and 82808 transitions. [2022-07-12 01:05:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-07-12 01:05:12,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:12,564 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:05:12,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 01:05:12,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 01:05:12,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash 635747760, now seen corresponding path program 1 times [2022-07-12 01:05:12,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:12,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488552985] [2022-07-12 01:05:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:12,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-12 01:05:12,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:12,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488552985] [2022-07-12 01:05:12,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488552985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:12,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:12,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:05:12,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098962200] [2022-07-12 01:05:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:12,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:12,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:05:12,877 INFO L87 Difference]: Start difference. First operand 75855 states and 82808 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:15,835 INFO L93 Difference]: Finished difference Result 191511 states and 208662 transitions. [2022-07-12 01:05:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:15,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 441 [2022-07-12 01:05:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:15,958 INFO L225 Difference]: With dead ends: 191511 [2022-07-12 01:05:15,958 INFO L226 Difference]: Without dead ends: 116409 [2022-07-12 01:05:15,973 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 [2022-07-12 01:05:15,974 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 564 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:15,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1162 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 01:05:16,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116409 states. [2022-07-12 01:05:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116409 to 112654. [2022-07-12 01:05:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112654 states, 112653 states have (on average 1.0836906251941805) internal successors, (122081), 112653 states have internal predecessors, (122081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112654 states to 112654 states and 122081 transitions. [2022-07-12 01:05:17,219 INFO L78 Accepts]: Start accepts. Automaton has 112654 states and 122081 transitions. Word has length 441 [2022-07-12 01:05:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:17,219 INFO L495 AbstractCegarLoop]: Abstraction has 112654 states and 122081 transitions. [2022-07-12 01:05:17,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 112654 states and 122081 transitions. [2022-07-12 01:05:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-07-12 01:05:17,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:17,231 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:05:17,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 01:05:17,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:17,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1595029034, now seen corresponding path program 1 times [2022-07-12 01:05:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:17,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464609956] [2022-07-12 01:05:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:17,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-12 01:05:17,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:17,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464609956] [2022-07-12 01:05:17,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464609956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:17,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:17,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:05:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271796046] [2022-07-12 01:05:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:17,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:17,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:05:17,372 INFO L87 Difference]: Start difference. First operand 112654 states and 122081 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:20,430 INFO L93 Difference]: Finished difference Result 269615 states and 293181 transitions. [2022-07-12 01:05:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:20,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 552 [2022-07-12 01:05:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:20,601 INFO L225 Difference]: With dead ends: 269615 [2022-07-12 01:05:20,602 INFO L226 Difference]: Without dead ends: 157714 [2022-07-12 01:05:20,668 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 [2022-07-12 01:05:20,670 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 536 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:20,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 1241 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 2117 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:05:20,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157714 states. [2022-07-12 01:05:22,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157714 to 146449. [2022-07-12 01:05:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146449 states, 146448 states have (on average 1.0691371681415929) internal successors, (156573), 146448 states have internal predecessors, (156573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146449 states to 146449 states and 156573 transitions. [2022-07-12 01:05:22,561 INFO L78 Accepts]: Start accepts. Automaton has 146449 states and 156573 transitions. Word has length 552 [2022-07-12 01:05:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:22,562 INFO L495 AbstractCegarLoop]: Abstraction has 146449 states and 156573 transitions. [2022-07-12 01:05:22,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 146449 states and 156573 transitions. [2022-07-12 01:05:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-07-12 01:05:22,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:22,826 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:05:22,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 01:05:22,826 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash 252091667, now seen corresponding path program 1 times [2022-07-12 01:05:22,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:22,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619840973] [2022-07-12 01:05:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:22,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-07-12 01:05:23,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:23,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619840973] [2022-07-12 01:05:23,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619840973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:23,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:23,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:05:23,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126251065] [2022-07-12 01:05:23,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:23,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:05:23,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:23,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:05:23,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:05:23,060 INFO L87 Difference]: Start difference. First operand 146449 states and 156573 transitions. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:28,023 INFO L93 Difference]: Finished difference Result 429580 states and 459769 transitions. [2022-07-12 01:05:28,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:05:28,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 585 [2022-07-12 01:05:28,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:28,379 INFO L225 Difference]: With dead ends: 429580 [2022-07-12 01:05:28,379 INFO L226 Difference]: Without dead ends: 283884 [2022-07-12 01:05:28,675 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 [2022-07-12 01:05:28,677 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1739 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4619 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 5243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 4619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:28,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 40 Invalid, 5243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 4619 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-12 01:05:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283884 states. [2022-07-12 01:05:31,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283884 to 262103. [2022-07-12 01:05:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262103 states, 262102 states have (on average 1.0678247399867227) internal successors, (279879), 262102 states have internal predecessors, (279879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262103 states to 262103 states and 279879 transitions. [2022-07-12 01:05:32,118 INFO L78 Accepts]: Start accepts. Automaton has 262103 states and 279879 transitions. Word has length 585 [2022-07-12 01:05:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:32,118 INFO L495 AbstractCegarLoop]: Abstraction has 262103 states and 279879 transitions. [2022-07-12 01:05:32,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:32,119 INFO L276 IsEmpty]: Start isEmpty. Operand 262103 states and 279879 transitions. [2022-07-12 01:05:32,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2022-07-12 01:05:32,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:32,134 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:05:32,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 01:05:32,135 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:32,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:32,135 INFO L85 PathProgramCache]: Analyzing trace with hash -686188482, now seen corresponding path program 1 times [2022-07-12 01:05:32,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:32,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047980783] [2022-07-12 01:05:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:32,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-07-12 01:05:32,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:32,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047980783] [2022-07-12 01:05:32,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047980783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:32,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:32,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:05:32,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73874999] [2022-07-12 01:05:32,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:32,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:05:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:32,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:05:32,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:05:32,337 INFO L87 Difference]: Start difference. First operand 262103 states and 279879 transitions. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:37,770 INFO L93 Difference]: Finished difference Result 529463 states and 566181 transitions. [2022-07-12 01:05:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:05:37,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 607 [2022-07-12 01:05:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:38,226 INFO L225 Difference]: With dead ends: 529463 [2022-07-12 01:05:38,226 INFO L226 Difference]: Without dead ends: 310169 [2022-07-12 01:05:38,328 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 [2022-07-12 01:05:38,328 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1690 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4388 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 5025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 4388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:38,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 40 Invalid, 5025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 4388 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 01:05:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310169 states. [2022-07-12 01:05:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310169 to 262103. [2022-07-12 01:05:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262103 states, 262102 states have (on average 1.0677560644329307) internal successors, (279861), 262102 states have internal predecessors, (279861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262103 states to 262103 states and 279861 transitions. [2022-07-12 01:05:42,185 INFO L78 Accepts]: Start accepts. Automaton has 262103 states and 279861 transitions. Word has length 607 [2022-07-12 01:05:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:42,185 INFO L495 AbstractCegarLoop]: Abstraction has 262103 states and 279861 transitions. [2022-07-12 01:05:42,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 262103 states and 279861 transitions. [2022-07-12 01:05:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2022-07-12 01:05:42,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:42,212 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:05:42,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 01:05:42,212 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash -581485506, now seen corresponding path program 1 times [2022-07-12 01:05:42,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:42,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774282600] [2022-07-12 01:05:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:42,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 1127 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-07-12 01:05:42,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:42,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774282600] [2022-07-12 01:05:42,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774282600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:42,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:42,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:05:42,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855805794] [2022-07-12 01:05:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:42,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:05:42,359 INFO L87 Difference]: Start difference. First operand 262103 states and 279861 transitions. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:45,995 INFO L93 Difference]: Finished difference Result 515192 states and 550408 transitions. [2022-07-12 01:05:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:45,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 752 [2022-07-12 01:05:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:46,394 INFO L225 Difference]: With dead ends: 515192 [2022-07-12 01:05:46,394 INFO L226 Difference]: Without dead ends: 265107 [2022-07-12 01:05:46,495 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 [2022-07-12 01:05:46,497 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 746 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:46,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 995 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 01:05:46,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265107 states. [2022-07-12 01:05:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265107 to 250838. [2022-07-12 01:05:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250838 states, 250837 states have (on average 1.0560044969442308) internal successors, (264885), 250837 states have internal predecessors, (264885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250838 states to 250838 states and 264885 transitions. [2022-07-12 01:05:49,875 INFO L78 Accepts]: Start accepts. Automaton has 250838 states and 264885 transitions. Word has length 752 [2022-07-12 01:05:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:49,884 INFO L495 AbstractCegarLoop]: Abstraction has 250838 states and 264885 transitions. [2022-07-12 01:05:49,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 250838 states and 264885 transitions. [2022-07-12 01:05:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2022-07-12 01:05:49,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:49,913 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:05:49,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 01:05:49,914 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash 312331955, now seen corresponding path program 1 times [2022-07-12 01:05:49,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:49,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478117498] [2022-07-12 01:05:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:49,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 817 proven. 79 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-07-12 01:05:50,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:50,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478117498] [2022-07-12 01:05:50,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478117498] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:05:50,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005598449] [2022-07-12 01:05:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:50,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:05:50,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:05:50,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:05:50,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 01:05:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:50,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:05:50,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:05:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 891 proven. 0 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2022-07-12 01:05:50,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:05:50,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005598449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:50,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:05:50,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-07-12 01:05:50,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727056176] [2022-07-12 01:05:50,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:50,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:50,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:50,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:05:50,730 INFO L87 Difference]: Start difference. First operand 250838 states and 264885 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:05:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:54,427 INFO L93 Difference]: Finished difference Result 539975 states and 570282 transitions. [2022-07-12 01:05:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:54,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 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 764 [2022-07-12 01:05:54,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:54,833 INFO L225 Difference]: With dead ends: 539975 [2022-07-12 01:05:54,833 INFO L226 Difference]: Without dead ends: 297400 [2022-07-12 01:05:54,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:05:54,964 INFO L413 NwaCegarLoop]: 1190 mSDtfsCounter, 705 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:54,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1197 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 01:05:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297400 states.