./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label54.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 83b9baf9f6deb0db64cb6e97ea77e31e0e6aa56bc46a9ba9c0c02a0377225524 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 11:13:59,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 11:13:59,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 11:13:59,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 11:13:59,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 11:13:59,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 11:13:59,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 11:13:59,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 11:13:59,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 11:13:59,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 11:13:59,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 11:13:59,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 11:13:59,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 11:13:59,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 11:13:59,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 11:13:59,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 11:13:59,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 11:13:59,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 11:13:59,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 11:13:59,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 11:13:59,618 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 11:13:59,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 11:13:59,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 11:13:59,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 11:13:59,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 11:13:59,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 11:13:59,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 11:13:59,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 11:13:59,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 11:13:59,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 11:13:59,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 11:13:59,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 11:13:59,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 11:13:59,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 11:13:59,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 11:13:59,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 11:13:59,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 11:13:59,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 11:13:59,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 11:13:59,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 11:13:59,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 11:13:59,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 11:13:59,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 11:13:59,649 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 11:13:59,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 11:13:59,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 11:13:59,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 11:13:59,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 11:13:59,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 11:13:59,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 11:13:59,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 11:13:59,652 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 11:13:59,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 11:13:59,652 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 11:13:59,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 11:13:59,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 11:13:59,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 11:13:59,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 11:13:59,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 11:13:59,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 11:13:59,653 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 11:13:59,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 11:13:59,653 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 11:13:59,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 11:13:59,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 11:13:59,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 11:13:59,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 11:13:59,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:13:59,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 11:13:59,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 11:13:59,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 11:13:59,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 11:13:59,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 11:13:59,655 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 11:13:59,655 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 11:13:59,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 11:13:59,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83b9baf9f6deb0db64cb6e97ea77e31e0e6aa56bc46a9ba9c0c02a0377225524 [2022-07-19 11:13:59,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 11:13:59,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 11:13:59,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 11:13:59,833 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 11:13:59,836 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 11:13:59,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label54.c [2022-07-19 11:13:59,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ebeb672/26fb036bb1f1406988c2a4376d598c2f/FLAGb93bcceaf [2022-07-19 11:14:00,371 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 11:14:00,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label54.c [2022-07-19 11:14:00,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ebeb672/26fb036bb1f1406988c2a4376d598c2f/FLAGb93bcceaf [2022-07-19 11:14:00,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ebeb672/26fb036bb1f1406988c2a4376d598c2f [2022-07-19 11:14:00,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 11:14:00,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 11:14:00,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 11:14:00,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 11:14:00,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 11:14:00,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:14:00" (1/1) ... [2022-07-19 11:14:00,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4760398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:00, skipping insertion in model container [2022-07-19 11:14:00,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:14:00" (1/1) ... [2022-07-19 11:14:00,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 11:14:00,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 11:14:00,882 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/Problem03_label54.c[56627,56640] [2022-07-19 11:14:00,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:14:00,917 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 11:14:01,070 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/Problem03_label54.c[56627,56640] [2022-07-19 11:14:01,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:14:01,092 INFO L208 MainTranslator]: Completed translation [2022-07-19 11:14:01,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01 WrapperNode [2022-07-19 11:14:01,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 11:14:01,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 11:14:01,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 11:14:01,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 11:14:01,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,188 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-19 11:14:01,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 11:14:01,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 11:14:01,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 11:14:01,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 11:14:01,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 11:14:01,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 11:14:01,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 11:14:01,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 11:14:01,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (1/1) ... [2022-07-19 11:14:01,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:14:01,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:01,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 11:14:01,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 11:14:01,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 11:14:01,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 11:14:01,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 11:14:01,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 11:14:01,394 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 11:14:01,395 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 11:14:02,472 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 11:14:02,485 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 11:14:02,486 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 11:14:02,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:14:02 BoogieIcfgContainer [2022-07-19 11:14:02,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 11:14:02,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 11:14:02,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 11:14:02,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 11:14:02,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:14:00" (1/3) ... [2022-07-19 11:14:02,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18af8d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:14:02, skipping insertion in model container [2022-07-19 11:14:02,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:01" (2/3) ... [2022-07-19 11:14:02,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18af8d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:14:02, skipping insertion in model container [2022-07-19 11:14:02,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:14:02" (3/3) ... [2022-07-19 11:14:02,496 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label54.c [2022-07-19 11:14:02,507 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 11:14:02,507 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 11:14:02,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 11:14:02,566 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@5cbf3f58, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@10ef069c [2022-07-19 11:14:02,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 11:14:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 11:14:02,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:02,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:02,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash -590757190, now seen corresponding path program 1 times [2022-07-19 11:14:02,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:02,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911370448] [2022-07-19 11:14:02,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:02,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:03,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:03,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911370448] [2022-07-19 11:14:03,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911370448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:03,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:03,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:03,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640696644] [2022-07-19 11:14:03,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:03,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:03,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:03,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:03,112 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:03,939 INFO L93 Difference]: Finished difference Result 829 states and 1478 transitions. [2022-07-19 11:14:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:03,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-07-19 11:14:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:03,951 INFO L225 Difference]: With dead ends: 829 [2022-07-19 11:14:03,951 INFO L226 Difference]: Without dead ends: 463 [2022-07-19 11:14:03,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:03,957 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 125 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:03,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 127 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:14:03,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-19 11:14:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2022-07-19 11:14:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 448 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 725 transitions. [2022-07-19 11:14:03,998 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 725 transitions. Word has length 166 [2022-07-19 11:14:03,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:03,999 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 725 transitions. [2022-07-19 11:14:03,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 725 transitions. [2022-07-19 11:14:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-19 11:14:04,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:04,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:04,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 11:14:04,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:04,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:04,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1027354506, now seen corresponding path program 1 times [2022-07-19 11:14:04,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:04,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963435999] [2022-07-19 11:14:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:04,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:04,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963435999] [2022-07-19 11:14:04,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963435999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:04,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:04,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:04,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965450460] [2022-07-19 11:14:04,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:04,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:04,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:04,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:04,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:04,061 INFO L87 Difference]: Start difference. First operand 449 states and 725 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:04,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:04,607 INFO L93 Difference]: Finished difference Result 1319 states and 2138 transitions. [2022-07-19 11:14:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:04,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-19 11:14:04,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:04,610 INFO L225 Difference]: With dead ends: 1319 [2022-07-19 11:14:04,610 INFO L226 Difference]: Without dead ends: 872 [2022-07-19 11:14:04,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:04,612 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:04,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 150 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-07-19 11:14:04,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2022-07-19 11:14:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2022-07-19 11:14:04,634 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 171 [2022-07-19 11:14:04,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:04,635 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2022-07-19 11:14:04,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:04,635 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2022-07-19 11:14:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-19 11:14:04,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:04,639 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 11:14:04,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:04,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2004202496, now seen corresponding path program 1 times [2022-07-19 11:14:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:04,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904934942] [2022-07-19 11:14:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:04,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:04,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904934942] [2022-07-19 11:14:04,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904934942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:04,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:04,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:04,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982562484] [2022-07-19 11:14:04,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:04,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:04,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:04,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:04,702 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 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) [2022-07-19 11:14:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:05,306 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2022-07-19 11:14:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:05,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 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 186 [2022-07-19 11:14:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:05,312 INFO L225 Difference]: With dead ends: 2554 [2022-07-19 11:14:05,312 INFO L226 Difference]: Without dead ends: 1686 [2022-07-19 11:14:05,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:05,313 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 232 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:05,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 417 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:14:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-07-19 11:14:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2022-07-19 11:14:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3363042186571599) internal successors, (2249), 1683 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2249 transitions. [2022-07-19 11:14:05,345 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2249 transitions. Word has length 186 [2022-07-19 11:14:05,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:05,346 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2249 transitions. [2022-07-19 11:14:05,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 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) [2022-07-19 11:14:05,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2249 transitions. [2022-07-19 11:14:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 11:14:05,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:05,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:05,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 11:14:05,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:05,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1182972067, now seen corresponding path program 1 times [2022-07-19 11:14:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:05,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205793882] [2022-07-19 11:14:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:05,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:05,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:05,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205793882] [2022-07-19 11:14:05,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205793882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:05,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:05,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:05,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308724486] [2022-07-19 11:14:05,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:05,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:05,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:05,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:05,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:05,442 INFO L87 Difference]: Start difference. First operand 1684 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:05,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:05,958 INFO L93 Difference]: Finished difference Result 5017 states and 6707 transitions. [2022-07-19 11:14:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2022-07-19 11:14:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:05,967 INFO L225 Difference]: With dead ends: 5017 [2022-07-19 11:14:05,967 INFO L226 Difference]: Without dead ends: 3335 [2022-07-19 11:14:05,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:05,983 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:05,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 123 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2022-07-19 11:14:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3326. [2022-07-19 11:14:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 1.3230075187969925) internal successors, (4399), 3325 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4399 transitions. [2022-07-19 11:14:06,062 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4399 transitions. Word has length 189 [2022-07-19 11:14:06,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:06,063 INFO L495 AbstractCegarLoop]: Abstraction has 3326 states and 4399 transitions. [2022-07-19 11:14:06,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:06,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4399 transitions. [2022-07-19 11:14:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-19 11:14:06,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:06,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:06,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 11:14:06,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash -50841403, now seen corresponding path program 1 times [2022-07-19 11:14:06,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:06,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47053314] [2022-07-19 11:14:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:06,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:06,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47053314] [2022-07-19 11:14:06,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47053314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:06,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:06,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:06,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405640169] [2022-07-19 11:14:06,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:06,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:06,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:06,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:06,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:06,125 INFO L87 Difference]: Start difference. First operand 3326 states and 4399 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:06,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:06,675 INFO L93 Difference]: Finished difference Result 9928 states and 13145 transitions. [2022-07-19 11:14:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-07-19 11:14:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:06,697 INFO L225 Difference]: With dead ends: 9928 [2022-07-19 11:14:06,711 INFO L226 Difference]: Without dead ends: 6604 [2022-07-19 11:14:06,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:06,734 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:06,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 167 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:06,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2022-07-19 11:14:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 5768. [2022-07-19 11:14:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 1.3370903415987516) internal successors, (7711), 5767 states have internal predecessors, (7711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 7711 transitions. [2022-07-19 11:14:06,895 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 7711 transitions. Word has length 192 [2022-07-19 11:14:06,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:06,896 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 7711 transitions. [2022-07-19 11:14:06,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 7711 transitions. [2022-07-19 11:14:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-19 11:14:06,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:06,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:06,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 11:14:06,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:06,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:06,907 INFO L85 PathProgramCache]: Analyzing trace with hash 564713384, now seen corresponding path program 1 times [2022-07-19 11:14:06,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:06,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352362382] [2022-07-19 11:14:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:06,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:06,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:06,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352362382] [2022-07-19 11:14:06,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352362382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:06,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:06,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367162751] [2022-07-19 11:14:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:06,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:06,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:06,970 INFO L87 Difference]: Start difference. First operand 5768 states and 7711 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:07,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:07,653 INFO L93 Difference]: Finished difference Result 14591 states and 19420 transitions. [2022-07-19 11:14:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:07,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 201 [2022-07-19 11:14:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:07,687 INFO L225 Difference]: With dead ends: 14591 [2022-07-19 11:14:07,688 INFO L226 Difference]: Without dead ends: 8825 [2022-07-19 11:14:07,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:07,700 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:07,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 421 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:14:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8825 states. [2022-07-19 11:14:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8825 to 8821. [2022-07-19 11:14:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 8820 states have (on average 1.2786848072562358) internal successors, (11278), 8820 states have internal predecessors, (11278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 11278 transitions. [2022-07-19 11:14:07,953 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 11278 transitions. Word has length 201 [2022-07-19 11:14:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:07,954 INFO L495 AbstractCegarLoop]: Abstraction has 8821 states and 11278 transitions. [2022-07-19 11:14:07,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 11278 transitions. [2022-07-19 11:14:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-19 11:14:07,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:07,970 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 11:14:07,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash -567138394, now seen corresponding path program 1 times [2022-07-19 11:14:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:07,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244681996] [2022-07-19 11:14:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:07,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:08,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:08,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244681996] [2022-07-19 11:14:08,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244681996] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:08,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101228068] [2022-07-19 11:14:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:08,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:08,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:08,070 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) [2022-07-19 11:14:08,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 11:14:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:08,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:14:08,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:08,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:08,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101228068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:08,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:08,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-19 11:14:08,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704911786] [2022-07-19 11:14:08,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:08,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:08,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:08,344 INFO L87 Difference]: Start difference. First operand 8821 states and 11278 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:09,144 INFO L93 Difference]: Finished difference Result 25787 states and 33056 transitions. [2022-07-19 11:14:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2022-07-19 11:14:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:09,190 INFO L225 Difference]: With dead ends: 25787 [2022-07-19 11:14:09,190 INFO L226 Difference]: Without dead ends: 16968 [2022-07-19 11:14:09,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:09,202 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 232 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:09,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 169 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16968 states. [2022-07-19 11:14:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16968 to 16559. [2022-07-19 11:14:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16559 states, 16558 states have (on average 1.2510568909288562) internal successors, (20715), 16558 states have internal predecessors, (20715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16559 states to 16559 states and 20715 transitions. [2022-07-19 11:14:09,446 INFO L78 Accepts]: Start accepts. Automaton has 16559 states and 20715 transitions. Word has length 203 [2022-07-19 11:14:09,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:09,447 INFO L495 AbstractCegarLoop]: Abstraction has 16559 states and 20715 transitions. [2022-07-19 11:14:09,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:09,448 INFO L276 IsEmpty]: Start isEmpty. Operand 16559 states and 20715 transitions. [2022-07-19 11:14:09,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-19 11:14:09,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:09,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:09,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 11:14:09,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:09,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:09,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:09,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1701117943, now seen corresponding path program 1 times [2022-07-19 11:14:09,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:09,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255344299] [2022-07-19 11:14:09,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:09,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:09,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:09,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255344299] [2022-07-19 11:14:09,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255344299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:09,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:09,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7279907] [2022-07-19 11:14:09,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:09,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:09,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:09,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:09,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:09,821 INFO L87 Difference]: Start difference. First operand 16559 states and 20715 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:10,611 INFO L93 Difference]: Finished difference Result 38428 states and 47966 transitions. [2022-07-19 11:14:10,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:10,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-07-19 11:14:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:10,644 INFO L225 Difference]: With dead ends: 38428 [2022-07-19 11:14:10,644 INFO L226 Difference]: Without dead ends: 21871 [2022-07-19 11:14:10,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:10,663 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:10,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 195 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:10,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21871 states. [2022-07-19 11:14:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21871 to 21857. [2022-07-19 11:14:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21857 states, 21856 states have (on average 1.2374633967789166) internal successors, (27046), 21856 states have internal predecessors, (27046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21857 states to 21857 states and 27046 transitions. [2022-07-19 11:14:10,981 INFO L78 Accepts]: Start accepts. Automaton has 21857 states and 27046 transitions. Word has length 207 [2022-07-19 11:14:10,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:10,981 INFO L495 AbstractCegarLoop]: Abstraction has 21857 states and 27046 transitions. [2022-07-19 11:14:10,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:10,981 INFO L276 IsEmpty]: Start isEmpty. Operand 21857 states and 27046 transitions. [2022-07-19 11:14:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-19 11:14:11,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:11,004 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:11,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 11:14:11,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -325061122, now seen corresponding path program 1 times [2022-07-19 11:14:11,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:11,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106192132] [2022-07-19 11:14:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:11,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106192132] [2022-07-19 11:14:11,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106192132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:11,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070229663] [2022-07-19 11:14:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:11,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:11,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:11,181 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) [2022-07-19 11:14:11,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 11:14:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:11,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 11:14:11,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:11,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:11,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070229663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:11,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:11,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-19 11:14:11,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38628145] [2022-07-19 11:14:11,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:11,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:11,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:11,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:11,509 INFO L87 Difference]: Start difference. First operand 21857 states and 27046 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:12,213 INFO L93 Difference]: Finished difference Result 50637 states and 63488 transitions. [2022-07-19 11:14:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:12,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 214 [2022-07-19 11:14:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:12,277 INFO L225 Difference]: With dead ends: 50637 [2022-07-19 11:14:12,278 INFO L226 Difference]: Without dead ends: 29391 [2022-07-19 11:14:12,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:12,306 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 87 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:12,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 398 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:12,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29391 states. [2022-07-19 11:14:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29391 to 29378. [2022-07-19 11:14:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29378 states, 29377 states have (on average 1.2391326547979713) internal successors, (36402), 29377 states have internal predecessors, (36402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29378 states to 29378 states and 36402 transitions. [2022-07-19 11:14:12,877 INFO L78 Accepts]: Start accepts. Automaton has 29378 states and 36402 transitions. Word has length 214 [2022-07-19 11:14:12,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:12,878 INFO L495 AbstractCegarLoop]: Abstraction has 29378 states and 36402 transitions. [2022-07-19 11:14:12,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 29378 states and 36402 transitions. [2022-07-19 11:14:12,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-19 11:14:12,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:12,913 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:14:12,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 11:14:13,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 11:14:13,137 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:13,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash 749729365, now seen corresponding path program 1 times [2022-07-19 11:14:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:13,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353376063] [2022-07-19 11:14:13,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:13,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 11:14:13,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:13,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353376063] [2022-07-19 11:14:13,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353376063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:13,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:13,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:13,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520364206] [2022-07-19 11:14:13,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:13,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:13,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:13,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:13,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:13,223 INFO L87 Difference]: Start difference. First operand 29378 states and 36402 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:13,608 INFO L93 Difference]: Finished difference Result 81392 states and 100767 transitions. [2022-07-19 11:14:13,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 227 [2022-07-19 11:14:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:13,702 INFO L225 Difference]: With dead ends: 81392 [2022-07-19 11:14:13,702 INFO L226 Difference]: Without dead ends: 52625 [2022-07-19 11:14:13,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:13,735 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 332 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:13,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 963 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 11:14:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52625 states. [2022-07-19 11:14:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52625 to 52622. [2022-07-19 11:14:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52622 states, 52621 states have (on average 1.2153892932479429) internal successors, (63955), 52621 states have internal predecessors, (63955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52622 states to 52622 states and 63955 transitions. [2022-07-19 11:14:14,885 INFO L78 Accepts]: Start accepts. Automaton has 52622 states and 63955 transitions. Word has length 227 [2022-07-19 11:14:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:14,885 INFO L495 AbstractCegarLoop]: Abstraction has 52622 states and 63955 transitions. [2022-07-19 11:14:14,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 52622 states and 63955 transitions. [2022-07-19 11:14:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-19 11:14:14,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:14,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:14,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 11:14:14,963 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash -585838557, now seen corresponding path program 1 times [2022-07-19 11:14:14,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:14,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170750992] [2022-07-19 11:14:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 11:14:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170750992] [2022-07-19 11:14:15,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170750992] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601821078] [2022-07-19 11:14:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:15,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:15,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:15,058 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) [2022-07-19 11:14:15,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 11:14:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:15,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:14:15,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:15,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:15,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601821078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:15,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:15,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-19 11:14:15,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547583125] [2022-07-19 11:14:15,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:15,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:15,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:15,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:15,277 INFO L87 Difference]: Start difference. First operand 52622 states and 63955 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:16,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:16,435 INFO L93 Difference]: Finished difference Result 124531 states and 153524 transitions. [2022-07-19 11:14:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:16,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2022-07-19 11:14:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:16,546 INFO L225 Difference]: With dead ends: 124531 [2022-07-19 11:14:16,546 INFO L226 Difference]: Without dead ends: 72114 [2022-07-19 11:14:16,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:16,579 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 224 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:16,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 172 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:14:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72114 states. [2022-07-19 11:14:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72114 to 71704. [2022-07-19 11:14:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71704 states, 71703 states have (on average 1.183353555639234) internal successors, (84850), 71703 states have internal predecessors, (84850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71704 states to 71704 states and 84850 transitions. [2022-07-19 11:14:17,570 INFO L78 Accepts]: Start accepts. Automaton has 71704 states and 84850 transitions. Word has length 233 [2022-07-19 11:14:17,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:17,570 INFO L495 AbstractCegarLoop]: Abstraction has 71704 states and 84850 transitions. [2022-07-19 11:14:17,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 71704 states and 84850 transitions. [2022-07-19 11:14:17,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-19 11:14:17,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:17,608 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:17,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 11:14:17,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:17,826 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:17,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:17,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1614905310, now seen corresponding path program 1 times [2022-07-19 11:14:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:17,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253550153] [2022-07-19 11:14:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:17,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 11:14:17,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:17,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253550153] [2022-07-19 11:14:17,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253550153] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:17,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446475512] [2022-07-19 11:14:17,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:17,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:17,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:17,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:14:17,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 11:14:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:18,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:14:18,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:18,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:18,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446475512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:18,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:18,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-19 11:14:18,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071093078] [2022-07-19 11:14:18,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:18,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:18,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:18,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:18,185 INFO L87 Difference]: Start difference. First operand 71704 states and 84850 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:19,453 INFO L93 Difference]: Finished difference Result 143207 states and 169481 transitions. [2022-07-19 11:14:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:19,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2022-07-19 11:14:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:19,664 INFO L225 Difference]: With dead ends: 143207 [2022-07-19 11:14:19,665 INFO L226 Difference]: Without dead ends: 71708 [2022-07-19 11:14:19,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:19,693 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 260 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:19,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 97 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71708 states. [2022-07-19 11:14:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71708 to 71704. [2022-07-19 11:14:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71704 states, 71703 states have (on average 1.1726287603029162) internal successors, (84081), 71703 states have internal predecessors, (84081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71704 states to 71704 states and 84081 transitions. [2022-07-19 11:14:20,493 INFO L78 Accepts]: Start accepts. Automaton has 71704 states and 84081 transitions. Word has length 234 [2022-07-19 11:14:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:20,493 INFO L495 AbstractCegarLoop]: Abstraction has 71704 states and 84081 transitions. [2022-07-19 11:14:20,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:20,494 INFO L276 IsEmpty]: Start isEmpty. Operand 71704 states and 84081 transitions. [2022-07-19 11:14:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-19 11:14:20,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:20,529 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:20,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 11:14:20,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:20,746 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:20,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1686341063, now seen corresponding path program 1 times [2022-07-19 11:14:20,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:20,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784255257] [2022-07-19 11:14:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:20,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-19 11:14:20,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:20,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784255257] [2022-07-19 11:14:20,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784255257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:20,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:20,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:20,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121983916] [2022-07-19 11:14:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:20,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:20,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:20,804 INFO L87 Difference]: Start difference. First operand 71704 states and 84081 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:22,241 INFO L93 Difference]: Finished difference Result 154410 states and 181101 transitions. [2022-07-19 11:14:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 [2022-07-19 11:14:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:22,350 INFO L225 Difference]: With dead ends: 154410 [2022-07-19 11:14:22,350 INFO L226 Difference]: Without dead ends: 82911 [2022-07-19 11:14:22,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:22,404 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:22,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 388 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:14:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82911 states. [2022-07-19 11:14:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82911 to 69463. [2022-07-19 11:14:23,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69463 states, 69462 states have (on average 1.1716046183524804) internal successors, (81382), 69462 states have internal predecessors, (81382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69463 states to 69463 states and 81382 transitions. [2022-07-19 11:14:23,519 INFO L78 Accepts]: Start accepts. Automaton has 69463 states and 81382 transitions. Word has length 237 [2022-07-19 11:14:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:23,520 INFO L495 AbstractCegarLoop]: Abstraction has 69463 states and 81382 transitions. [2022-07-19 11:14:23,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 69463 states and 81382 transitions. [2022-07-19 11:14:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-19 11:14:23,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:23,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:14:23,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 11:14:23,551 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1649515910, now seen corresponding path program 1 times [2022-07-19 11:14:23,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:23,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525581860] [2022-07-19 11:14:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:23,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:23,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:23,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525581860] [2022-07-19 11:14:23,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525581860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:23,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:23,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312736656] [2022-07-19 11:14:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:23,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:23,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:23,631 INFO L87 Difference]: Start difference. First operand 69463 states and 81382 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:24,692 INFO L93 Difference]: Finished difference Result 139129 states and 163011 transitions. [2022-07-19 11:14:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:24,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2022-07-19 11:14:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:24,775 INFO L225 Difference]: With dead ends: 139129 [2022-07-19 11:14:24,775 INFO L226 Difference]: Without dead ends: 69871 [2022-07-19 11:14:24,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:24,795 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:24,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 199 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69871 states. [2022-07-19 11:14:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69871 to 69869. [2022-07-19 11:14:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69869 states, 69868 states have (on average 1.1712515028339154) internal successors, (81833), 69868 states have internal predecessors, (81833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69869 states to 69869 states and 81833 transitions. [2022-07-19 11:14:25,661 INFO L78 Accepts]: Start accepts. Automaton has 69869 states and 81833 transitions. Word has length 240 [2022-07-19 11:14:25,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:25,661 INFO L495 AbstractCegarLoop]: Abstraction has 69869 states and 81833 transitions. [2022-07-19 11:14:25,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 69869 states and 81833 transitions. [2022-07-19 11:14:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-19 11:14:25,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:25,701 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:25,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 11:14:25,701 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:25,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1843214196, now seen corresponding path program 1 times [2022-07-19 11:14:25,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:25,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640670697] [2022-07-19 11:14:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:25,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-19 11:14:25,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:25,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640670697] [2022-07-19 11:14:25,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640670697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:25,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:25,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504729047] [2022-07-19 11:14:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:25,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:14:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:14:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:25,774 INFO L87 Difference]: Start difference. First operand 69869 states and 81833 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:27,029 INFO L93 Difference]: Finished difference Result 139603 states and 163557 transitions. [2022-07-19 11:14:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:14:27,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 253 [2022-07-19 11:14:27,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:27,108 INFO L225 Difference]: With dead ends: 139603 [2022-07-19 11:14:27,108 INFO L226 Difference]: Without dead ends: 70345 [2022-07-19 11:14:27,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:27,139 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 411 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:27,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 174 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:27,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70345 states. [2022-07-19 11:14:27,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70345 to 67634. [2022-07-19 11:14:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67634 states, 67633 states have (on average 1.173081188177369) internal successors, (79339), 67633 states have internal predecessors, (79339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67634 states to 67634 states and 79339 transitions. [2022-07-19 11:14:27,965 INFO L78 Accepts]: Start accepts. Automaton has 67634 states and 79339 transitions. Word has length 253 [2022-07-19 11:14:27,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:27,965 INFO L495 AbstractCegarLoop]: Abstraction has 67634 states and 79339 transitions. [2022-07-19 11:14:27,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 67634 states and 79339 transitions. [2022-07-19 11:14:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-19 11:14:27,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:27,995 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:27,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 11:14:27,995 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:27,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1370069441, now seen corresponding path program 1 times [2022-07-19 11:14:27,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:27,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981485171] [2022-07-19 11:14:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:27,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-19 11:14:28,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981485171] [2022-07-19 11:14:28,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981485171] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:28,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941087268] [2022-07-19 11:14:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:28,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:28,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:28,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:14:28,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 11:14:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:28,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:14:28,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-19 11:14:28,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:28,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941087268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:28,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:28,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-19 11:14:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698986779] [2022-07-19 11:14:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:28,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:28,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:28,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:28,245 INFO L87 Difference]: Start difference. First operand 67634 states and 79339 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:29,265 INFO L93 Difference]: Finished difference Result 132475 states and 155143 transitions. [2022-07-19 11:14:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:29,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 260 [2022-07-19 11:14:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:29,339 INFO L225 Difference]: With dead ends: 132475 [2022-07-19 11:14:29,340 INFO L226 Difference]: Without dead ends: 65046 [2022-07-19 11:14:29,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:29,367 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:29,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 384 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65046 states. [2022-07-19 11:14:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65046 to 64792. [2022-07-19 11:14:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64792 states, 64791 states have (on average 1.1605006868237873) internal successors, (75190), 64791 states have internal predecessors, (75190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64792 states to 64792 states and 75190 transitions. [2022-07-19 11:14:30,171 INFO L78 Accepts]: Start accepts. Automaton has 64792 states and 75190 transitions. Word has length 260 [2022-07-19 11:14:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:30,171 INFO L495 AbstractCegarLoop]: Abstraction has 64792 states and 75190 transitions. [2022-07-19 11:14:30,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 64792 states and 75190 transitions. [2022-07-19 11:14:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-19 11:14:30,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:30,203 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:30,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 11:14:30,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 11:14:30,416 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:30,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1308759228, now seen corresponding path program 1 times [2022-07-19 11:14:30,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:30,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790774961] [2022-07-19 11:14:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:30,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 114 proven. 6 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-19 11:14:30,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:30,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790774961] [2022-07-19 11:14:30,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790774961] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:30,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185614128] [2022-07-19 11:14:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:30,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:30,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:30,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:14:30,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 11:14:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:30,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:14:30,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 11:14:30,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:30,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185614128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:30,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:30,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-19 11:14:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776641877] [2022-07-19 11:14:30,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:30,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:30,756 INFO L87 Difference]: Start difference. First operand 64792 states and 75190 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:31,419 INFO L93 Difference]: Finished difference Result 182479 states and 211840 transitions. [2022-07-19 11:14:31,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:31,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 265 [2022-07-19 11:14:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:31,597 INFO L225 Difference]: With dead ends: 182479 [2022-07-19 11:14:31,597 INFO L226 Difference]: Without dead ends: 118298 [2022-07-19 11:14:31,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:31,657 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 303 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:31,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 900 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 11:14:32,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118298 states. [2022-07-19 11:14:33,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118298 to 111800. [2022-07-19 11:14:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111800 states, 111799 states have (on average 1.1472821760480862) internal successors, (128265), 111799 states have internal predecessors, (128265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111800 states to 111800 states and 128265 transitions. [2022-07-19 11:14:33,276 INFO L78 Accepts]: Start accepts. Automaton has 111800 states and 128265 transitions. Word has length 265 [2022-07-19 11:14:33,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:33,276 INFO L495 AbstractCegarLoop]: Abstraction has 111800 states and 128265 transitions. [2022-07-19 11:14:33,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 111800 states and 128265 transitions. [2022-07-19 11:14:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-19 11:14:33,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:33,316 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:33,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 11:14:33,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 11:14:33,533 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:33,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:33,533 INFO L85 PathProgramCache]: Analyzing trace with hash -385750121, now seen corresponding path program 1 times [2022-07-19 11:14:33,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:33,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896654423] [2022-07-19 11:14:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:33,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 116 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-19 11:14:33,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:33,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896654423] [2022-07-19 11:14:33,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896654423] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:33,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924934611] [2022-07-19 11:14:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:33,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:33,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:33,601 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:14:33,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 11:14:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:33,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:14:33,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-19 11:14:33,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:33,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924934611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:33,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:33,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-19 11:14:33,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975418961] [2022-07-19 11:14:33,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:33,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:33,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:33,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:33,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:33,923 INFO L87 Difference]: Start difference. First operand 111800 states and 128265 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:35,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:35,206 INFO L93 Difference]: Finished difference Result 222177 states and 254951 transitions. [2022-07-19 11:14:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:35,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 267 [2022-07-19 11:14:35,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:35,375 INFO L225 Difference]: With dead ends: 222177 [2022-07-19 11:14:35,375 INFO L226 Difference]: Without dead ends: 110988 [2022-07-19 11:14:35,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:35,441 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 104 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:35,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 342 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:14:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110988 states. [2022-07-19 11:14:36,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110988 to 110577. [2022-07-19 11:14:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110577 states, 110576 states have (on average 1.140771957748517) internal successors, (126142), 110576 states have internal predecessors, (126142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110577 states to 110577 states and 126142 transitions. [2022-07-19 11:14:37,498 INFO L78 Accepts]: Start accepts. Automaton has 110577 states and 126142 transitions. Word has length 267 [2022-07-19 11:14:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:37,499 INFO L495 AbstractCegarLoop]: Abstraction has 110577 states and 126142 transitions. [2022-07-19 11:14:37,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 110577 states and 126142 transitions. [2022-07-19 11:14:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-19 11:14:37,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:37,543 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:37,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 11:14:37,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:37,747 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 77971101, now seen corresponding path program 1 times [2022-07-19 11:14:37,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:37,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297244954] [2022-07-19 11:14:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:37,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 11:14:37,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:37,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297244954] [2022-07-19 11:14:37,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297244954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:37,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:37,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:37,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396428291] [2022-07-19 11:14:37,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:37,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:14:37,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:37,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:14:37,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:37,851 INFO L87 Difference]: Start difference. First operand 110577 states and 126142 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:38,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:38,942 INFO L93 Difference]: Finished difference Result 190923 states and 217676 transitions. [2022-07-19 11:14:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:14:38,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 273 [2022-07-19 11:14:38,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:39,043 INFO L225 Difference]: With dead ends: 190923 [2022-07-19 11:14:39,043 INFO L226 Difference]: Without dead ends: 77709 [2022-07-19 11:14:39,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:39,107 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 447 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:39,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 59 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:14:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77709 states. [2022-07-19 11:14:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77709 to 75474. [2022-07-19 11:14:40,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75474 states, 75473 states have (on average 1.0891709618009089) internal successors, (82203), 75473 states have internal predecessors, (82203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75474 states to 75474 states and 82203 transitions. [2022-07-19 11:14:40,279 INFO L78 Accepts]: Start accepts. Automaton has 75474 states and 82203 transitions. Word has length 273 [2022-07-19 11:14:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:40,295 INFO L495 AbstractCegarLoop]: Abstraction has 75474 states and 82203 transitions. [2022-07-19 11:14:40,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 75474 states and 82203 transitions. [2022-07-19 11:14:40,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-19 11:14:40,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:40,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:14:40,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 11:14:40,335 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 672800317, now seen corresponding path program 1 times [2022-07-19 11:14:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:40,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264694584] [2022-07-19 11:14:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:40,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-19 11:14:40,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264694584] [2022-07-19 11:14:40,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264694584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:40,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:40,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722529660] [2022-07-19 11:14:40,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:40,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:40,655 INFO L87 Difference]: Start difference. First operand 75474 states and 82203 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:41,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:41,564 INFO L93 Difference]: Finished difference Result 162142 states and 176746 transitions. [2022-07-19 11:14:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:41,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2022-07-19 11:14:41,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:41,685 INFO L225 Difference]: With dead ends: 162142 [2022-07-19 11:14:41,686 INFO L226 Difference]: Without dead ends: 87279 [2022-07-19 11:14:41,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:41,734 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 202 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:41,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 120 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87279 states. [2022-07-19 11:14:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87279 to 86259. [2022-07-19 11:14:42,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86259 states, 86258 states have (on average 1.090727816550349) internal successors, (94084), 86258 states have internal predecessors, (94084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86259 states to 86259 states and 94084 transitions. [2022-07-19 11:14:43,026 INFO L78 Accepts]: Start accepts. Automaton has 86259 states and 94084 transitions. Word has length 274 [2022-07-19 11:14:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:43,027 INFO L495 AbstractCegarLoop]: Abstraction has 86259 states and 94084 transitions. [2022-07-19 11:14:43,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 86259 states and 94084 transitions. [2022-07-19 11:14:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-19 11:14:43,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:43,062 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:43,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 11:14:43,062 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1441807218, now seen corresponding path program 1 times [2022-07-19 11:14:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:43,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425154449] [2022-07-19 11:14:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:43,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:43,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425154449] [2022-07-19 11:14:43,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425154449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:43,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:43,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:43,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059363976] [2022-07-19 11:14:43,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:43,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:43,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:43,208 INFO L87 Difference]: Start difference. First operand 86259 states and 94084 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:44,153 INFO L93 Difference]: Finished difference Result 155208 states and 168978 transitions. [2022-07-19 11:14:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:44,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2022-07-19 11:14:44,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:44,238 INFO L225 Difference]: With dead ends: 155208 [2022-07-19 11:14:44,239 INFO L226 Difference]: Without dead ends: 77499 [2022-07-19 11:14:44,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:44,281 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 218 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:44,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 312 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:14:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77499 states. [2022-07-19 11:14:45,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77499 to 76065. [2022-07-19 11:14:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76065 states, 76064 states have (on average 1.0792490534286916) internal successors, (82092), 76064 states have internal predecessors, (82092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:45,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76065 states to 76065 states and 82092 transitions. [2022-07-19 11:14:45,248 INFO L78 Accepts]: Start accepts. Automaton has 76065 states and 82092 transitions. Word has length 281 [2022-07-19 11:14:45,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:45,249 INFO L495 AbstractCegarLoop]: Abstraction has 76065 states and 82092 transitions. [2022-07-19 11:14:45,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:45,249 INFO L276 IsEmpty]: Start isEmpty. Operand 76065 states and 82092 transitions. [2022-07-19 11:14:45,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-19 11:14:45,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:45,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:45,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 11:14:45,273 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1117147942, now seen corresponding path program 1 times [2022-07-19 11:14:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:45,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359900727] [2022-07-19 11:14:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:45,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 11:14:45,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:45,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359900727] [2022-07-19 11:14:45,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359900727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:45,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:45,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:45,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594943285] [2022-07-19 11:14:45,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:45,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:14:45,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:14:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:45,367 INFO L87 Difference]: Start difference. First operand 76065 states and 82092 transitions. Second operand has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:46,296 INFO L93 Difference]: Finished difference Result 144829 states and 156010 transitions. [2022-07-19 11:14:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:14:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 287 [2022-07-19 11:14:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:46,383 INFO L225 Difference]: With dead ends: 144829 [2022-07-19 11:14:46,383 INFO L226 Difference]: Without dead ends: 78331 [2022-07-19 11:14:46,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:46,772 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 337 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:46,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 85 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:14:46,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78331 states. [2022-07-19 11:14:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78331 to 76677. [2022-07-19 11:14:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76677 states, 76676 states have (on average 1.0781991757525171) internal successors, (82672), 76676 states have internal predecessors, (82672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76677 states to 76677 states and 82672 transitions. [2022-07-19 11:14:47,874 INFO L78 Accepts]: Start accepts. Automaton has 76677 states and 82672 transitions. Word has length 287 [2022-07-19 11:14:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:47,874 INFO L495 AbstractCegarLoop]: Abstraction has 76677 states and 82672 transitions. [2022-07-19 11:14:47,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 76677 states and 82672 transitions. [2022-07-19 11:14:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-19 11:14:47,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:47,912 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:14:47,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 11:14:47,912 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:47,913 INFO L85 PathProgramCache]: Analyzing trace with hash -124409572, now seen corresponding path program 1 times [2022-07-19 11:14:47,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:47,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959718035] [2022-07-19 11:14:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:47,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 93 proven. 6 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-19 11:14:47,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:47,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959718035] [2022-07-19 11:14:47,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959718035] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:47,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891973563] [2022-07-19 11:14:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:47,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:47,998 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:14:47,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 11:14:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:48,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 11:14:48,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-19 11:14:48,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:48,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891973563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:48,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:48,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-19 11:14:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851799547] [2022-07-19 11:14:48,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:48,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:14:48,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:48,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:14:48,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-19 11:14:48,230 INFO L87 Difference]: Start difference. First operand 76677 states and 82672 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:49,259 INFO L93 Difference]: Finished difference Result 216764 states and 233935 transitions. [2022-07-19 11:14:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:14:49,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 314 [2022-07-19 11:14:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:49,440 INFO L225 Difference]: With dead ends: 216764 [2022-07-19 11:14:49,440 INFO L226 Difference]: Without dead ends: 142529 [2022-07-19 11:14:49,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-19 11:14:49,513 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 488 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:49,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 289 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:14:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142529 states. [2022-07-19 11:14:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142529 to 126273. [2022-07-19 11:14:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126273 states, 126272 states have (on average 1.0745612645717182) internal successors, (135687), 126272 states have internal predecessors, (135687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126273 states to 126273 states and 135687 transitions. [2022-07-19 11:14:51,481 INFO L78 Accepts]: Start accepts. Automaton has 126273 states and 135687 transitions. Word has length 314 [2022-07-19 11:14:51,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:51,481 INFO L495 AbstractCegarLoop]: Abstraction has 126273 states and 135687 transitions. [2022-07-19 11:14:51,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 126273 states and 135687 transitions. [2022-07-19 11:14:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-07-19 11:14:51,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:51,499 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:51,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 11:14:51,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-19 11:14:51,716 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:51,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1226804409, now seen corresponding path program 1 times [2022-07-19 11:14:51,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:51,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159994387] [2022-07-19 11:14:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:51,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 152 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 11:14:51,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:51,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159994387] [2022-07-19 11:14:51,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159994387] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:51,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592294573] [2022-07-19 11:14:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:51,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:51,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:51,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:14:51,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 11:14:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:51,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:14:51,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 11:14:52,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:52,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592294573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:52,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:52,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-19 11:14:52,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896260946] [2022-07-19 11:14:52,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:52,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:52,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:52,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:52,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:52,096 INFO L87 Difference]: Start difference. First operand 126273 states and 135687 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:53,322 INFO L93 Difference]: Finished difference Result 338133 states and 363078 transitions. [2022-07-19 11:14:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:53,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 315 [2022-07-19 11:14:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:53,657 INFO L225 Difference]: With dead ends: 338133 [2022-07-19 11:14:53,658 INFO L226 Difference]: Without dead ends: 212471 [2022-07-19 11:14:53,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:53,761 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 179 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:53,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 474 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 11:14:53,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212471 states.