./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.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 2f6e67caa8159a722902bebe9d23adade07462f3fac0eb20b485945b97ba6592 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:49:11,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:49:11,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:49:11,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:49:11,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:49:11,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:49:11,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:49:11,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:49:11,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:49:11,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:49:11,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:49:11,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:49:11,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:49:11,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:49:11,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:49:11,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:49:11,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:49:11,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:49:11,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:49:11,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:49:11,429 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:49:11,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:49:11,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:49:11,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:49:11,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:49:11,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:49:11,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:49:11,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:49:11,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:49:11,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:49:11,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:49:11,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:49:11,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:49:11,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:49:11,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:49:11,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:49:11,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:49:11,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:49:11,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:49:11,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:49:11,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:49:11,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:49:11,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:49:11,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:49:11,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:49:11,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:49:11,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:49:11,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:49:11,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:49:11,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:49:11,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:49:11,470 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:49:11,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:49:11,471 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:49:11,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:49:11,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:49:11,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:49:11,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:49:11,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:49:11,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:49:11,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:49:11,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:49:11,473 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:49:11,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:49:11,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:49:11,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:49:11,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:49:11,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:49:11,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:49:11,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:49:11,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:49:11,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:49:11,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:49:11,474 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:49:11,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:49:11,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:49:11,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f6e67caa8159a722902bebe9d23adade07462f3fac0eb20b485945b97ba6592 [2022-07-13 19:49:11,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:49:11,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:49:11,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:49:11,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:49:11,667 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:49:11,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c [2022-07-13 19:49:11,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228ce7de1/7b716c2d274d48fabeb84427224ac463/FLAG7a50e39cc [2022-07-13 19:49:12,359 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:49:12,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c [2022-07-13 19:49:12,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228ce7de1/7b716c2d274d48fabeb84427224ac463/FLAG7a50e39cc [2022-07-13 19:49:12,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228ce7de1/7b716c2d274d48fabeb84427224ac463 [2022-07-13 19:49:12,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:49:12,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:49:12,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:49:12,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:49:12,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:49:12,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:49:12" (1/1) ... [2022-07-13 19:49:12,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a89eefd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:12, skipping insertion in model container [2022-07-13 19:49:12,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:49:12" (1/1) ... [2022-07-13 19:49:12,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:49:12,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:49:14,098 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/combinations/Problem05_label40+token_ring.03.cil-2.c[377069,377082] [2022-07-13 19:49:14,117 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/combinations/Problem05_label40+token_ring.03.cil-2.c[383339,383352] [2022-07-13 19:49:14,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:49:14,234 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:49:14,768 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/combinations/Problem05_label40+token_ring.03.cil-2.c[377069,377082] [2022-07-13 19:49:14,775 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/combinations/Problem05_label40+token_ring.03.cil-2.c[383339,383352] [2022-07-13 19:49:14,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:49:14,836 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:49:14,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14 WrapperNode [2022-07-13 19:49:14,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:49:14,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:49:14,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:49:14,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:49:14,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:14,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:15,211 INFO L137 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-07-13 19:49:15,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:49:15,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:49:15,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:49:15,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:49:15,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:15,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:15,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:15,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:15,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:15,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:15,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:15,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:49:15,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:49:15,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:49:15,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:49:15,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (1/1) ... [2022-07-13 19:49:15,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:49:15,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:49:15,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 19:49:15,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 19:49:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:49:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 19:49:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 19:49:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 19:49:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 19:49:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 19:49:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 19:49:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 19:49:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 19:49:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 19:49:15,729 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 19:49:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 19:49:15,729 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 19:49:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:49:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:49:15,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:49:15,882 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:49:15,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:49:20,269 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:49:20,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:49:20,288 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-13 19:49:20,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:49:20 BoogieIcfgContainer [2022-07-13 19:49:20,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:49:20,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:49:20,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:49:20,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:49:20,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:49:12" (1/3) ... [2022-07-13 19:49:20,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9b55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:49:20, skipping insertion in model container [2022-07-13 19:49:20,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:49:14" (2/3) ... [2022-07-13 19:49:20,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9b55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:49:20, skipping insertion in model container [2022-07-13 19:49:20,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:49:20" (3/3) ... [2022-07-13 19:49:20,314 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.03.cil-2.c [2022-07-13 19:49:20,323 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:49:20,324 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 19:49:20,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:49:20,391 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@6a9e20b1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60906306 [2022-07-13 19:49:20,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 19:49:20,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-13 19:49:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 19:49:20,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:20,415 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] [2022-07-13 19:49:20,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-07-13 19:49:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:20,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870702202] [2022-07-13 19:49:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:20,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:49:20,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:20,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870702202] [2022-07-13 19:49:20,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870702202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:20,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:49:20,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:49:20,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922492208] [2022-07-13 19:49:20,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:49:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:20,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:49:20,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:49:20,776 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:21,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:21,656 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-07-13 19:49:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:49:21,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 19:49:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:21,676 INFO L225 Difference]: With dead ends: 4899 [2022-07-13 19:49:21,676 INFO L226 Difference]: Without dead ends: 2500 [2022-07-13 19:49:21,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:49:21,688 INFO L413 NwaCegarLoop]: 4287 mSDtfsCounter, 4543 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:21,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 16755 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:49:21,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-07-13 19:49:21,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-07-13 19:49:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-07-13 19:49:21,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-07-13 19:49:21,786 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-07-13 19:49:21,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:21,786 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-07-13 19:49:21,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-07-13 19:49:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 19:49:21,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:21,789 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] [2022-07-13 19:49:21,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:49:21,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:21,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:21,790 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-07-13 19:49:21,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:21,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517740402] [2022-07-13 19:49:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:21,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:49:21,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:21,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517740402] [2022-07-13 19:49:21,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517740402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:21,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:49:21,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:49:21,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568966238] [2022-07-13 19:49:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:21,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:49:21,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:49:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:49:21,869 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:22,736 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-07-13 19:49:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:49:22,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 19:49:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:22,749 INFO L225 Difference]: With dead ends: 2969 [2022-07-13 19:49:22,750 INFO L226 Difference]: Without dead ends: 2686 [2022-07-13 19:49:22,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:49:22,752 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 4469 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 20875 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:22,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 20875 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:49:22,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-07-13 19:49:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-07-13 19:49:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-13 19:49:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-07-13 19:49:22,803 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-07-13 19:49:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:22,803 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-07-13 19:49:22,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-07-13 19:49:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 19:49:22,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:22,806 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] [2022-07-13 19:49:22,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:49:22,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:22,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-07-13 19:49:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:22,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854717326] [2022-07-13 19:49:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:22,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:22,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:49:22,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:22,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854717326] [2022-07-13 19:49:22,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854717326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:22,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:49:22,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:49:22,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944162973] [2022-07-13 19:49:22,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:22,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:49:22,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:22,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:49:22,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:49:22,873 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:23,686 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-07-13 19:49:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:49:23,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 19:49:23,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:23,697 INFO L225 Difference]: With dead ends: 3451 [2022-07-13 19:49:23,697 INFO L226 Difference]: Without dead ends: 3035 [2022-07-13 19:49:23,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:49:23,700 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 4466 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 20867 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:23,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 20867 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:49:23,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-07-13 19:49:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-07-13 19:49:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-13 19:49:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-07-13 19:49:23,756 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-07-13 19:49:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:23,757 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-07-13 19:49:23,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-07-13 19:49:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 19:49:23,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:23,758 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] [2022-07-13 19:49:23,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:49:23,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-07-13 19:49:23,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:23,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655175982] [2022-07-13 19:49:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:23,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:49:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:23,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655175982] [2022-07-13 19:49:23,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655175982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:23,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:49:23,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:49:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065456782] [2022-07-13 19:49:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:23,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:49:23,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:23,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:49:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:49:23,869 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:24,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:24,666 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2022-07-13 19:49:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:49:24,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 19:49:24,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:24,678 INFO L225 Difference]: With dead ends: 4382 [2022-07-13 19:49:24,678 INFO L226 Difference]: Without dead ends: 3699 [2022-07-13 19:49:24,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:49:24,682 INFO L413 NwaCegarLoop]: 4308 mSDtfsCounter, 4462 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 20863 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:24,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4472 Valid, 20863 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:49:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-07-13 19:49:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2022-07-13 19:49:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-07-13 19:49:24,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2022-07-13 19:49:24,761 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2022-07-13 19:49:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:24,761 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2022-07-13 19:49:24,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:24,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2022-07-13 19:49:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 19:49:24,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:24,763 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] [2022-07-13 19:49:24,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:49:24,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2022-07-13 19:49:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:24,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131760318] [2022-07-13 19:49:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:49:24,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:24,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131760318] [2022-07-13 19:49:24,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131760318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:24,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:49:24,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:49:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075039896] [2022-07-13 19:49:24,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:24,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:49:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:49:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:49:24,821 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:25,708 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2022-07-13 19:49:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:49:25,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 19:49:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:25,726 INFO L225 Difference]: With dead ends: 6651 [2022-07-13 19:49:25,726 INFO L226 Difference]: Without dead ends: 5433 [2022-07-13 19:49:25,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:49:25,731 INFO L413 NwaCegarLoop]: 4302 mSDtfsCounter, 4593 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 20849 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:25,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 20849 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:49:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-07-13 19:49:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2022-07-13 19:49:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-07-13 19:49:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2022-07-13 19:49:25,837 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2022-07-13 19:49:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:25,837 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2022-07-13 19:49:25,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2022-07-13 19:49:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 19:49:25,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:25,839 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] [2022-07-13 19:49:25,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:49:25,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2022-07-13 19:49:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:25,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907492132] [2022-07-13 19:49:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:25,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:49:25,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:25,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907492132] [2022-07-13 19:49:25,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907492132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:25,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:49:25,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:49:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230670590] [2022-07-13 19:49:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:49:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:49:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:49:25,898 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:26,907 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2022-07-13 19:49:26,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:49:26,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 19:49:26,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:26,936 INFO L225 Difference]: With dead ends: 10516 [2022-07-13 19:49:26,937 INFO L226 Difference]: Without dead ends: 8247 [2022-07-13 19:49:26,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:49:26,946 INFO L413 NwaCegarLoop]: 4339 mSDtfsCounter, 4479 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4488 SdHoareTripleChecker+Valid, 20883 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:26,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4488 Valid, 20883 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 19:49:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2022-07-13 19:49:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2022-07-13 19:49:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-07-13 19:49:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2022-07-13 19:49:27,129 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2022-07-13 19:49:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:27,129 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2022-07-13 19:49:27,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2022-07-13 19:49:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 19:49:27,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:27,134 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] [2022-07-13 19:49:27,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:49:27,134 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:27,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2022-07-13 19:49:27,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:27,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851086849] [2022-07-13 19:49:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:27,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:27,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:27,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:49:27,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:27,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851086849] [2022-07-13 19:49:27,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851086849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:27,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:49:27,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:49:27,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869767471] [2022-07-13 19:49:27,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:27,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:49:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:49:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:49:27,216 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:28,274 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2022-07-13 19:49:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:49:28,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 19:49:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:28,312 INFO L225 Difference]: With dead ends: 17230 [2022-07-13 19:49:28,312 INFO L226 Difference]: Without dead ends: 12950 [2022-07-13 19:49:28,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:49:28,328 INFO L413 NwaCegarLoop]: 4289 mSDtfsCounter, 4470 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:28,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4484 Valid, 20836 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:49:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-07-13 19:49:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2022-07-13 19:49:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-07-13 19:49:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2022-07-13 19:49:28,692 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2022-07-13 19:49:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:28,693 INFO L495 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2022-07-13 19:49:28,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2022-07-13 19:49:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 19:49:28,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:28,698 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] [2022-07-13 19:49:28,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:49:28,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:28,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2022-07-13 19:49:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:28,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095340585] [2022-07-13 19:49:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:28,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:28,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:28,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:28,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:49:28,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:28,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095340585] [2022-07-13 19:49:28,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095340585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:28,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:49:28,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:49:28,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320070002] [2022-07-13 19:49:28,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:28,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:49:28,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:28,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:49:28,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:49:28,754 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:29,896 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2022-07-13 19:49:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:49:29,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 19:49:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:29,944 INFO L225 Difference]: With dead ends: 25979 [2022-07-13 19:49:29,945 INFO L226 Difference]: Without dead ends: 17584 [2022-07-13 19:49:29,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 19:49:29,970 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 4630 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 16716 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:29,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 16716 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:49:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-07-13 19:49:30,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2022-07-13 19:49:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-07-13 19:49:30,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2022-07-13 19:49:30,445 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2022-07-13 19:49:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:30,445 INFO L495 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2022-07-13 19:49:30,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:49:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2022-07-13 19:49:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 19:49:30,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:30,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:49:30,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:49:30,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:30,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:30,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2022-07-13 19:49:30,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:30,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547796544] [2022-07-13 19:49:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:30,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:49:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:49:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 19:49:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 19:49:30,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:30,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547796544] [2022-07-13 19:49:30,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547796544] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:49:30,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276924393] [2022-07-13 19:49:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:30,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:49:30,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:49:30,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:49:30,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 19:49:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:30,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:49:30,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:49:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 19:49:30,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:49:30,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276924393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:30,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:49:30,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 19:49:30,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410078184] [2022-07-13 19:49:30,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:30,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:49:30,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:30,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:49:30,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:49:30,769 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 19:49:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:31,468 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2022-07-13 19:49:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:49:31,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-13 19:49:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:31,555 INFO L225 Difference]: With dead ends: 39550 [2022-07-13 19:49:31,555 INFO L226 Difference]: Without dead ends: 26962 [2022-07-13 19:49:31,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:49:31,595 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:31,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:49:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2022-07-13 19:49:32,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2022-07-13 19:49:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-07-13 19:49:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2022-07-13 19:49:32,544 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2022-07-13 19:49:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:32,544 INFO L495 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2022-07-13 19:49:32,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 19:49:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2022-07-13 19:49:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 19:49:32,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:32,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:49:32,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 19:49:32,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:49:32,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:32,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:32,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2022-07-13 19:49:32,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:32,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074836159] [2022-07-13 19:49:32,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:32,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:49:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:49:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 19:49:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 19:49:32,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:32,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074836159] [2022-07-13 19:49:32,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074836159] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:49:32,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546721019] [2022-07-13 19:49:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:32,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:49:32,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:49:32,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:49:32,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 19:49:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:32,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:49:32,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:49:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 19:49:33,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:49:33,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546721019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:33,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:49:33,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 19:49:33,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403058556] [2022-07-13 19:49:33,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:33,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:49:33,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:33,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:49:33,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:49:33,049 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 19:49:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:34,393 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2022-07-13 19:49:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:49:34,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-13 19:49:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:34,548 INFO L225 Difference]: With dead ends: 75333 [2022-07-13 19:49:34,548 INFO L226 Difference]: Without dead ends: 50702 [2022-07-13 19:49:34,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:49:34,597 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:34,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:49:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2022-07-13 19:49:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2022-07-13 19:49:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-07-13 19:49:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2022-07-13 19:49:36,368 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2022-07-13 19:49:36,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:36,368 INFO L495 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2022-07-13 19:49:36,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 19:49:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2022-07-13 19:49:36,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 19:49:36,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:36,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:49:36,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 19:49:36,667 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,SelfDestructingSolverStorable9 [2022-07-13 19:49:36,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:36,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2022-07-13 19:49:36,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:36,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47546336] [2022-07-13 19:49:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:49:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:49:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 19:49:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 19:49:36,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:36,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47546336] [2022-07-13 19:49:36,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47546336] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:49:36,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107611287] [2022-07-13 19:49:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:36,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:49:36,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:49:36,756 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:49:36,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 19:49:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:36,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:49:36,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:49:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 19:49:36,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:49:36,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107611287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:36,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:49:36,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:49:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332758245] [2022-07-13 19:49:36,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:36,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:49:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:49:36,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:49:36,865 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 19:49:39,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:39,745 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2022-07-13 19:49:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:49:39,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-07-13 19:49:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:40,151 INFO L225 Difference]: With dead ends: 144685 [2022-07-13 19:49:40,151 INFO L226 Difference]: Without dead ends: 96511 [2022-07-13 19:49:40,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:49:40,256 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:40,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:49:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2022-07-13 19:49:43,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2022-07-13 19:49:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-07-13 19:49:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96511 states to 96511 states and 147320 transitions. [2022-07-13 19:49:44,000 INFO L78 Accepts]: Start accepts. Automaton has 96511 states and 147320 transitions. Word has length 128 [2022-07-13 19:49:44,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:49:44,001 INFO L495 AbstractCegarLoop]: Abstraction has 96511 states and 147320 transitions. [2022-07-13 19:49:44,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 19:49:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 96511 states and 147320 transitions. [2022-07-13 19:49:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 19:49:44,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:49:44,286 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, 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] [2022-07-13 19:49:44,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 19:49:44,499 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 [2022-07-13 19:49:44,500 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:49:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:49:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1108291405, now seen corresponding path program 1 times [2022-07-13 19:49:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:49:44,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522452960] [2022-07-13 19:49:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:49:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:49:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:49:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 19:49:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:49:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 19:49:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:49:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:49:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 19:49:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:49:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 19:49:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-13 19:49:44,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:49:44,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522452960] [2022-07-13 19:49:44,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522452960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:49:44,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992280560] [2022-07-13 19:49:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:49:44,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:49:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:49:44,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:49:44,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 19:49:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:49:44,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:49:44,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:49:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 19:49:44,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:49:44,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992280560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:49:44,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:49:44,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 19:49:44,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633775288] [2022-07-13 19:49:44,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:49:44,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:49:44,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:49:44,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:49:44,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:49:44,819 INFO L87 Difference]: Start difference. First operand 96511 states and 147320 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 19:49:50,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:49:50,858 INFO L93 Difference]: Finished difference Result 280463 states and 429619 transitions. [2022-07-13 19:49:50,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:49:50,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-07-13 19:49:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:49:51,634 INFO L225 Difference]: With dead ends: 280463 [2022-07-13 19:49:51,635 INFO L226 Difference]: Without dead ends: 186091 [2022-07-13 19:49:52,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:49:52,008 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 4086 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:49:52,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4399 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:49:52,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186091 states.