/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_THREAD_INSTANCE --traceabstraction.maximal.amount.of.steps.the.threads.are.allowed.to.take.successively 1 --traceabstraction.enable.heuristic.with.loops.as.step.type false --traceabstraction.considered.threads.and.their.maximal.amount.of.steps X --traceabstraction.defines.what.statements.are.considered.a.step.in.por ALL_READ_WRITE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/25_stack_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.orders-218013a [2023-05-04 13:52:19,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-05-04 13:52:19,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-05-04 13:52:19,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-05-04 13:52:19,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-05-04 13:52:19,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-05-04 13:52:19,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-05-04 13:52:19,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-05-04 13:52:19,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-05-04 13:52:19,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-05-04 13:52:19,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-05-04 13:52:19,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-05-04 13:52:19,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-05-04 13:52:19,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-05-04 13:52:19,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-05-04 13:52:19,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-05-04 13:52:19,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-05-04 13:52:19,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-05-04 13:52:19,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-05-04 13:52:19,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-05-04 13:52:19,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf [2023-05-04 13:52:19,623 INFO L113 SettingsManager]: Loading preferences was successful [2023-05-04 13:52:19,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-05-04 13:52:19,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-05-04 13:52:19,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-05-04 13:52:19,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-05-04 13:52:19,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-05-04 13:52:19,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-05-04 13:52:19,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-05-04 13:52:19,626 INFO L138 SettingsManager]: * Use SBE=true [2023-05-04 13:52:19,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-05-04 13:52:19,628 INFO L138 SettingsManager]: * sizeof long=4 [2023-05-04 13:52:19,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-05-04 13:52:19,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-05-04 13:52:19,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-05-04 13:52:19,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-05-04 13:52:19,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-05-04 13:52:19,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-05-04 13:52:19,629 INFO L138 SettingsManager]: * sizeof long double=12 [2023-05-04 13:52:19,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-05-04 13:52:19,629 INFO L138 SettingsManager]: * Use constant arrays=true [2023-05-04 13:52:19,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-05-04 13:52:19,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-05-04 13:52:19,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-05-04 13:52:19,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-05-04 13:52:19,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-05-04 13:52:19,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-04 13:52:19,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-05-04 13:52:19,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-05-04 13:52:19,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-05-04 13:52:19,631 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-05-04 13:52:19,631 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-05-04 13:52:19,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-05-04 13:52:19,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-05-04 13:52:19,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-05-04 13:52:19,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-05-04 13:52:19,632 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-05-04 13:52:19,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_THREAD_INSTANCE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Maximal amount of steps the threads are allowed to take successively -> 1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Enable heuristic with loops as step type -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Considered threads and their maximal amount of steps -> X Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Defines what statements are considered a step in POR -> ALL_READ_WRITE [2023-05-04 13:52:19,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-05-04 13:52:19,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-05-04 13:52:19,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-05-04 13:52:19,933 INFO L271 PluginConnector]: Initializing CDTParser... [2023-05-04 13:52:19,934 INFO L275 PluginConnector]: CDTParser initialized [2023-05-04 13:52:19,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/25_stack_longest-1.i [2023-05-04 13:52:20,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9a14c49/8cd116b0e71948a899bed8d04d574fa0/FLAG8dd528653 [2023-05-04 13:52:20,455 INFO L306 CDTParser]: Found 1 translation units. [2023-05-04 13:52:20,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-1.i [2023-05-04 13:52:20,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9a14c49/8cd116b0e71948a899bed8d04d574fa0/FLAG8dd528653 [2023-05-04 13:52:20,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9a14c49/8cd116b0e71948a899bed8d04d574fa0 [2023-05-04 13:52:20,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-05-04 13:52:20,790 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-05-04 13:52:20,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-05-04 13:52:20,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-05-04 13:52:20,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-05-04 13:52:20,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.05 01:52:20" (1/1) ... [2023-05-04 13:52:20,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d86283d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:20, skipping insertion in model container [2023-05-04 13:52:20,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.05 01:52:20" (1/1) ... [2023-05-04 13:52:20,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-05-04 13:52:20,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-05-04 13:52:21,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-1.i[31180,31193] [2023-05-04 13:52:21,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-04 13:52:21,204 INFO L203 MainTranslator]: Completed pre-run [2023-05-04 13:52:21,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-1.i[31180,31193] [2023-05-04 13:52:21,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-04 13:52:21,304 INFO L208 MainTranslator]: Completed translation [2023-05-04 13:52:21,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21 WrapperNode [2023-05-04 13:52:21,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-05-04 13:52:21,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-05-04 13:52:21,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-05-04 13:52:21,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-05-04 13:52:21,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,365 INFO L138 Inliner]: procedures = 179, calls = 36, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 174 [2023-05-04 13:52:21,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-05-04 13:52:21,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-05-04 13:52:21,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-05-04 13:52:21,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-05-04 13:52:21,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-05-04 13:52:21,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-05-04 13:52:21,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-05-04 13:52:21,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-05-04 13:52:21,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (1/1) ... [2023-05-04 13:52:21,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-04 13:52:21,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:52:21,450 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) [2023-05-04 13:52:21,472 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 [2023-05-04 13:52:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-05-04 13:52:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-05-04 13:52:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-05-04 13:52:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-05-04 13:52:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-05-04 13:52:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-05-04 13:52:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-05-04 13:52:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-05-04 13:52:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-05-04 13:52:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-05-04 13:52:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-05-04 13:52:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-05-04 13:52:21,493 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-05-04 13:52:21,644 INFO L235 CfgBuilder]: Building ICFG [2023-05-04 13:52:21,645 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-05-04 13:52:21,887 INFO L276 CfgBuilder]: Performing block encoding [2023-05-04 13:52:22,092 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-05-04 13:52:22,092 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-05-04 13:52:22,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.05 01:52:22 BoogieIcfgContainer [2023-05-04 13:52:22,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-05-04 13:52:22,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-05-04 13:52:22,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-05-04 13:52:22,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-05-04 13:52:22,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.05 01:52:20" (1/3) ... [2023-05-04 13:52:22,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cb0e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.05 01:52:22, skipping insertion in model container [2023-05-04 13:52:22,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:52:21" (2/3) ... [2023-05-04 13:52:22,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cb0e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.05 01:52:22, skipping insertion in model container [2023-05-04 13:52:22,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.05 01:52:22" (3/3) ... [2023-05-04 13:52:22,105 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longest-1.i [2023-05-04 13:52:22,113 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-05-04 13:52:22,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-05-04 13:52:22,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-05-04 13:52:22,122 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-05-04 13:52:22,230 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-05-04 13:52:22,278 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:52:22,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-04 13:52:22,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:52:22,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-04 13:52:22,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-05-04 13:52:22,337 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-04 13:52:22,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-05-04 13:52:22,380 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=PARTIAL_ORDER_FA, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@377bc4ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:52:22,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-04 13:52:22,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1591360525, now seen corresponding path program 1 times [2023-05-04 13:52:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:22,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506697964] [2023-05-04 13:52:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-05-04 13:52:22,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:22,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506697964] [2023-05-04 13:52:22,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506697964] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:22,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:52:22,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-05-04 13:52:22,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034971742] [2023-05-04 13:52:22,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:22,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-05-04 13:52:22,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-05-04 13:52:22,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-05-04 13:52:22,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:22,916 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:22,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:22,918 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:23,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-05-04 13:52:23,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash 423937295, now seen corresponding path program 1 times [2023-05-04 13:52:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:23,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234295657] [2023-05-04 13:52:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:23,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-04 13:52:23,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:23,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234295657] [2023-05-04 13:52:23,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234295657] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:23,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:52:23,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-05-04 13:52:23,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181678837] [2023-05-04 13:52:23,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:23,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-05-04 13:52:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-05-04 13:52:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-05-04 13:52:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:23,839 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:23,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:23,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:23,840 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-05-04 13:52:24,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-05-04 13:52:24,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-05-04 13:52:24,891 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2023-05-04 13:52:24,892 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2023-05-04 13:52:24,896 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:52:24,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-04 13:52:24,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:52:24,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-04 13:52:24,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2023-05-04 13:52:24,910 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-04 13:52:24,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-05-04 13:52:24,913 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=PARTIAL_ORDER_FA, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@377bc4ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:52:24,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-04 13:52:24,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-05-04 13:52:24,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:24,986 INFO L85 PathProgramCache]: Analyzing trace with hash -435465849, now seen corresponding path program 1 times [2023-05-04 13:52:24,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:24,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106487557] [2023-05-04 13:52:24,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:24,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-04 13:52:25,030 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-05-04 13:52:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-04 13:52:25,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-05-04 13:52:25,080 INFO L359 BasicCegarLoop]: Counterexample is feasible [2023-05-04 13:52:25,080 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-05-04 13:52:25,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-05-04 13:52:25,095 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2023-05-04 13:52:25,095 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2023-05-04 13:52:25,096 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-05-04 13:52:25,096 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-05-04 13:52:25,184 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-05-04 13:52:25,192 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:52:25,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-04 13:52:25,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:52:25,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-04 13:52:25,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2023-05-04 13:52:25,233 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-04 13:52:25,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-05-04 13:52:25,235 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=PARTIAL_ORDER_FA, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@377bc4ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:52:25,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-04 13:52:25,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-05-04 13:52:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1231819185, now seen corresponding path program 1 times [2023-05-04 13:52:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:25,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154464299] [2023-05-04 13:52:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-05-04 13:52:25,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:25,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154464299] [2023-05-04 13:52:25,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154464299] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:25,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:52:25,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-05-04 13:52:25,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909400878] [2023-05-04 13:52:25,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:25,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-05-04 13:52:25,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:25,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-05-04 13:52:25,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-05-04 13:52:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:25,481 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:25,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:25,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:25,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-05-04 13:52:25,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-05-04 13:52:25,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1663752499, now seen corresponding path program 1 times [2023-05-04 13:52:25,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:25,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549293457] [2023-05-04 13:52:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:25,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-05-04 13:52:25,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:25,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549293457] [2023-05-04 13:52:25,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549293457] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-04 13:52:25,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156971131] [2023-05-04 13:52:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:25,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-04 13:52:25,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:52:25,948 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) [2023-05-04 13:52:25,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-05-04 13:52:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:26,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 38 conjunts are in the unsatisfiable core [2023-05-04 13:52:26,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-04 13:52:26,246 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-05-04 13:52:26,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-05-04 13:52:26,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-05-04 13:52:26,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-05-04 13:52:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-05-04 13:52:26,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-04 13:52:26,630 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-05-04 13:52:26,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-05-04 13:52:26,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-05-04 13:52:26,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-05-04 13:52:26,693 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-05-04 13:52:26,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-05-04 13:52:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-05-04 13:52:26,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156971131] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-04 13:52:26,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-04 13:52:26,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2023-05-04 13:52:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908395306] [2023-05-04 13:52:26,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-04 13:52:26,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-05-04 13:52:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:26,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-05-04 13:52:26,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=272, Unknown=1, NotChecked=0, Total=342 [2023-05-04 13:52:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:26,705 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:26,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.684210526315789) internal successors, (146), 19 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:26,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:26,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:26,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-05-04 13:52:26,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-05-04 13:52:27,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-04 13:52:27,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-05-04 13:52:27,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:27,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1732612059, now seen corresponding path program 1 times [2023-05-04 13:52:27,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:27,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101227103] [2023-05-04 13:52:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:27,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-04 13:52:27,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-05-04 13:52:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-04 13:52:27,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-05-04 13:52:27,185 INFO L359 BasicCegarLoop]: Counterexample is feasible [2023-05-04 13:52:27,185 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-05-04 13:52:27,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-05-04 13:52:27,187 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-05-04 13:52:27,187 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2023-05-04 13:52:27,188 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-05-04 13:52:27,188 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-05-04 13:52:27,263 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-05-04 13:52:27,266 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:52:27,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-04 13:52:27,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:52:27,267 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-04 13:52:27,273 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-04 13:52:27,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2023-05-04 13:52:27,277 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=PARTIAL_ORDER_FA, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@377bc4ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:52:27,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-04 13:52:27,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2023-05-04 13:52:27,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:27,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1749103286, now seen corresponding path program 1 times [2023-05-04 13:52:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:27,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880860409] [2023-05-04 13:52:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-05-04 13:52:27,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:27,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880860409] [2023-05-04 13:52:27,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880860409] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:27,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:52:27,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-05-04 13:52:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878160236] [2023-05-04 13:52:27,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:27,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-05-04 13:52:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-05-04 13:52:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-05-04 13:52:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:27,796 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:27,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:27,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:28,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-05-04 13:52:28,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:28,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:28,219 INFO L85 PathProgramCache]: Analyzing trace with hash 936414306, now seen corresponding path program 1 times [2023-05-04 13:52:28,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:28,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003610307] [2023-05-04 13:52:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-05-04 13:52:28,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:28,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003610307] [2023-05-04 13:52:28,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003610307] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-04 13:52:28,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451130683] [2023-05-04 13:52:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:28,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-04 13:52:28,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:52:28,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-04 13:52:28,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-05-04 13:52:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:28,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 2 conjunts are in the unsatisfiable core [2023-05-04 13:52:28,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-04 13:52:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-05-04 13:52:28,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-05-04 13:52:28,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451130683] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:28,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-05-04 13:52:28,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-05-04 13:52:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359954956] [2023-05-04 13:52:28,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:28,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-04 13:52:28,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:28,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-04 13:52:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-05-04 13:52:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:28,819 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:28,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:28,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:28,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:28,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-05-04 13:52:29,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-04 13:52:29,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash 38692084, now seen corresponding path program 1 times [2023-05-04 13:52:29,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:29,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747305327] [2023-05-04 13:52:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-05-04 13:52:29,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:29,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747305327] [2023-05-04 13:52:29,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747305327] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-04 13:52:29,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401357646] [2023-05-04 13:52:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:29,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-04 13:52:29,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:52:29,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-04 13:52:29,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-05-04 13:52:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:29,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 4 conjunts are in the unsatisfiable core [2023-05-04 13:52:29,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-04 13:52:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-05-04 13:52:29,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-04 13:52:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-05-04 13:52:29,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401357646] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-04 13:52:29,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-04 13:52:29,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-05-04 13:52:29,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580713615] [2023-05-04 13:52:29,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-04 13:52:29,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-05-04 13:52:29,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:29,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-05-04 13:52:29,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-05-04 13:52:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:29,775 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:29,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:29,775 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:29,775 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:29,775 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:29,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-05-04 13:52:30,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-04 13:52:30,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1639319204, now seen corresponding path program 1 times [2023-05-04 13:52:30,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:30,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271347461] [2023-05-04 13:52:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:30,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-05-04 13:52:30,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:30,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271347461] [2023-05-04 13:52:30,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271347461] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:30,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:52:30,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-05-04 13:52:30,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564681780] [2023-05-04 13:52:30,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:30,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-05-04 13:52:30,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:30,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-05-04 13:52:30,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-05-04 13:52:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:30,390 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:30,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:30,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:30,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:30,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:30,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:30,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-05-04 13:52:30,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:30,491 INFO L85 PathProgramCache]: Analyzing trace with hash -638682412, now seen corresponding path program 1 times [2023-05-04 13:52:30,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:30,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961123062] [2023-05-04 13:52:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:30,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-05-04 13:52:30,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:30,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961123062] [2023-05-04 13:52:30,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961123062] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:30,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:52:30,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-05-04 13:52:30,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483333416] [2023-05-04 13:52:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:30,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-05-04 13:52:30,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-05-04 13:52:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-05-04 13:52:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:30,686 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:30,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:30,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:30,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:30,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:30,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:30,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-05-04 13:52:31,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-05-04 13:52:31,235 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:31,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 648610819, now seen corresponding path program 1 times [2023-05-04 13:52:31,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:31,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037116518] [2023-05-04 13:52:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:31,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 27597 backedges. 2962 proven. 0 refuted. 0 times theorem prover too weak. 24635 trivial. 0 not checked. [2023-05-04 13:52:33,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:33,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037116518] [2023-05-04 13:52:33,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037116518] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:33,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:52:33,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-05-04 13:52:33,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331286969] [2023-05-04 13:52:33,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:33,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-05-04 13:52:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:33,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-05-04 13:52:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-05-04 13:52:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:33,563 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:33,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 6 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:33,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:33,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:33,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:33,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:33,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-05-04 13:52:33,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-05-04 13:52:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-05-04 13:52:33,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-05-04 13:52:33,706 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:33,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1789950385, now seen corresponding path program 1 times [2023-05-04 13:52:33,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:33,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398926015] [2023-05-04 13:52:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:33,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-05-04 13:52:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:34,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398926015] [2023-05-04 13:52:34,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398926015] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:34,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:52:34,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-05-04 13:52:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665152536] [2023-05-04 13:52:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:34,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-05-04 13:52:34,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-05-04 13:52:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-05-04 13:52:34,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:34,094 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:34,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:34,094 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:34,094 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:34,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:34,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:34,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-05-04 13:52:34,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-05-04 13:52:34,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-05-04 13:52:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-05-04 13:52:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-05-04 13:52:34,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-05-04 13:52:34,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:52:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:52:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1018149874, now seen corresponding path program 1 times [2023-05-04 13:52:34,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:52:34,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890275385] [2023-05-04 13:52:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:52:34,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:52:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:52:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-05-04 13:52:34,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:52:34,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890275385] [2023-05-04 13:52:34,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890275385] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:52:34,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:52:34,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-05-04 13:52:34,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568497532] [2023-05-04 13:52:34,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:52:34,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-05-04 13:52:34,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:52:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-05-04 13:52:34,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-05-04 13:52:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:52:34,444 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:52:34,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 46.5) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-05-04 13:52:34,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:34,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-04 13:52:34,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:52:34,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-05-04 13:52:34,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-05-04 13:52:34,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-05-04 13:52:34,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-05-04 13:52:34,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.