./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/pthread-demo-datarace-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i ./goblint.2024-06-19_11-23-25.files/protection/pthread-demo-datarace-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:00:29,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:00:29,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:00:29,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:00:29,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:00:29,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:00:29,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:00:29,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:00:29,520 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:00:29,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:00:29,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:00:29,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:00:29,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:00:29,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:00:29,529 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:00:29,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:00:29,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:00:29,531 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:00:29,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:00:29,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:00:29,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:00:29,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:00:29,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:00:29,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:00:29,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:00:29,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:00:29,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:00:29,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:00:29,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:00:29,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:00:29,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:00:29,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:00:29,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:00:29,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:00:29,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:00:29,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:00:29,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:00:29,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:00:29,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:00:29,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:00:29,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:00:29,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:00:29,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:00:29,543 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:00:29,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:00:29,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:00:29,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:00:29,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:00:29,827 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:00:29,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2024-06-27 18:00:30,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:00:31,256 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:00:31,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2024-06-27 18:00:31,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/012595e5b/0c8cf757857c49e08f36e93aaf57553a/FLAG40d662c11 [2024-06-27 18:00:31,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/012595e5b/0c8cf757857c49e08f36e93aaf57553a [2024-06-27 18:00:31,303 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:00:31,304 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:00:31,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/pthread-demo-datarace-1.yml/witness.yml [2024-06-27 18:00:31,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:00:31,375 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:00:31,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:00:31,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:00:31,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:00:31,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:00:31" (1/2) ... [2024-06-27 18:00:31,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cec2614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:00:31, skipping insertion in model container [2024-06-27 18:00:31,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:00:31" (1/2) ... [2024-06-27 18:00:31,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@146409ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:00:31, skipping insertion in model container [2024-06-27 18:00:31,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:00:31" (2/2) ... [2024-06-27 18:00:31,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cec2614 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:31, skipping insertion in model container [2024-06-27 18:00:31,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:00:31" (2/2) ... [2024-06-27 18:00:31,387 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:00:31,418 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:00:31,420 INFO L97 edCorrectnessWitness]: Location invariant before [L1343-L1346] ! multithreaded || 0 <= myglobal [2024-06-27 18:00:31,420 INFO L103 edCorrectnessWitness]: ghost_variable mymutex_locked = 0 [2024-06-27 18:00:31,420 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:00:31,420 INFO L106 edCorrectnessWitness]: ghost_update [L1325-L1325] mymutex_locked = 1; [2024-06-27 18:00:31,420 INFO L106 edCorrectnessWitness]: ghost_update [L1351-L1351] mymutex_locked = 0; [2024-06-27 18:00:31,421 INFO L106 edCorrectnessWitness]: ghost_update [L1330-L1330] mymutex_locked = 0; [2024-06-27 18:00:31,421 INFO L106 edCorrectnessWitness]: ghost_update [L1343-L1343] multithreaded = 1; [2024-06-27 18:00:31,421 INFO L106 edCorrectnessWitness]: ghost_update [L1349-L1349] mymutex_locked = 1; [2024-06-27 18:00:31,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:00:31,685 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-06-27 18:00:31,910 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:00:31,923 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-06-27 18:00:31,965 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:00:32,026 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:00:32,111 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:00:32,111 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32 WrapperNode [2024-06-27 18:00:32,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:00:32,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:00:32,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:00:32,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:00:32,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,168 INFO L138 Inliner]: procedures = 364, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-06-27 18:00:32,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:00:32,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:00:32,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:00:32,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:00:32,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,178 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,191 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-06-27 18:00:32,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:00:32,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:00:32,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:00:32,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:00:32,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (1/1) ... [2024-06-27 18:00:32,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:00:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:00:32,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:00:32,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:00:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 18:00:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 18:00:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:00:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-06-27 18:00:32,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-06-27 18:00:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:00:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:00:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:00:32,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:00:32,270 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:00:32,399 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:00:32,401 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:00:32,560 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:00:32,561 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:00:32,684 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:00:32,686 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 18:00:32,686 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:00:32 BoogieIcfgContainer [2024-06-27 18:00:32,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:00:32,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:00:32,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:00:32,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:00:32,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:00:31" (1/4) ... [2024-06-27 18:00:32,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7979db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:00:32, skipping insertion in model container [2024-06-27 18:00:32,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:00:31" (2/4) ... [2024-06-27 18:00:32,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7979db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:00:32, skipping insertion in model container [2024-06-27 18:00:32,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:00:32" (3/4) ... [2024-06-27 18:00:32,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7979db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:00:32, skipping insertion in model container [2024-06-27 18:00:32,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:00:32" (4/4) ... [2024-06-27 18:00:32,712 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-06-27 18:00:32,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:00:32,728 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 18:00:32,728 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:00:32,754 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-06-27 18:00:32,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 27 transitions, 61 flow [2024-06-27 18:00:32,801 INFO L124 PetriNetUnfolderBase]: 3/26 cut-off events. [2024-06-27 18:00:32,801 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 18:00:32,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 26 events. 3/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-06-27 18:00:32,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 27 transitions, 61 flow [2024-06-27 18:00:32,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 23 transitions, 52 flow [2024-06-27 18:00:32,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:00:32,820 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3c3bb34f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:00:32,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-06-27 18:00:32,822 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:00:32,822 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-06-27 18:00:32,822 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:00:32,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:32,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-06-27 18:00:32,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:32,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:32,828 INFO L85 PathProgramCache]: Analyzing trace with hash 8471, now seen corresponding path program 1 times [2024-06-27 18:00:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:32,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396830602] [2024-06-27 18:00:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:00:33,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:00:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396830602] [2024-06-27 18:00:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396830602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:00:33,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:00:33,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:00:33,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401844873] [2024-06-27 18:00:33,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:00:33,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:00:33,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:00:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:00:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:00:33,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-06-27 18:00:33,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-06-27 18:00:33,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:00:33,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-06-27 18:00:33,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:00:33,147 INFO L124 PetriNetUnfolderBase]: 37/84 cut-off events. [2024-06-27 18:00:33,147 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 18:00:33,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 84 events. 37/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 25 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 148. Up to 77 conditions per place. [2024-06-27 18:00:33,151 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 16 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2024-06-27 18:00:33,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 86 flow [2024-06-27 18:00:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:00:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:00:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-06-27 18:00:33,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 18:00:33,161 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 52 flow. Second operand 3 states and 37 transitions. [2024-06-27 18:00:33,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 86 flow [2024-06-27 18:00:33,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:00:33,165 INFO L231 Difference]: Finished difference. Result has 24 places, 22 transitions, 50 flow [2024-06-27 18:00:33,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=24, PETRI_TRANSITIONS=22} [2024-06-27 18:00:33,169 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2024-06-27 18:00:33,170 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 22 transitions, 50 flow [2024-06-27 18:00:33,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-06-27 18:00:33,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:33,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:00:33,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:00:33,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:33,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:33,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1852333259, now seen corresponding path program 1 times [2024-06-27 18:00:33,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:33,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556618098] [2024-06-27 18:00:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:33,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:00:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:00:33,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556618098] [2024-06-27 18:00:33,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556618098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:00:33,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:00:33,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:00:33,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099449282] [2024-06-27 18:00:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:00:33,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:00:33,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:00:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:00:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:00:33,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-06-27 18:00:33,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-06-27 18:00:33,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:00:33,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-06-27 18:00:33,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:00:33,379 INFO L124 PetriNetUnfolderBase]: 61/138 cut-off events. [2024-06-27 18:00:33,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:00:33,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 138 events. 61/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 436 event pairs, 25 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 259. Up to 78 conditions per place. [2024-06-27 18:00:33,381 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 25 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-06-27 18:00:33,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2024-06-27 18:00:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:00:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:00:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-27 18:00:33,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-06-27 18:00:33,385 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 50 flow. Second operand 3 states and 52 transitions. [2024-06-27 18:00:33,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2024-06-27 18:00:33,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:00:33,389 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 58 flow [2024-06-27 18:00:33,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-06-27 18:00:33,390 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-06-27 18:00:33,390 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 58 flow [2024-06-27 18:00:33,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-06-27 18:00:33,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:33,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:00:33,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:00:33,395 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:33,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1840437518, now seen corresponding path program 1 times [2024-06-27 18:00:33,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:33,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579144329] [2024-06-27 18:00:33,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:33,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:00:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:00:33,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579144329] [2024-06-27 18:00:33,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579144329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:00:33,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:00:33,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:00:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218775452] [2024-06-27 18:00:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:00:33,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:00:33,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:00:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:00:33,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:00:33,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-06-27 18:00:33,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-06-27 18:00:33,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:00:33,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-06-27 18:00:33,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:00:33,582 INFO L124 PetriNetUnfolderBase]: 101/225 cut-off events. [2024-06-27 18:00:33,584 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-06-27 18:00:33,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 225 events. 101/225 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 827 event pairs, 45 based on Foata normal form. 10/234 useless extension candidates. Maximal degree in co-relation 116. Up to 126 conditions per place. [2024-06-27 18:00:33,586 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 27 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-06-27 18:00:33,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 34 transitions, 148 flow [2024-06-27 18:00:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:00:33,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:00:33,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-27 18:00:33,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-06-27 18:00:33,587 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 58 flow. Second operand 3 states and 52 transitions. [2024-06-27 18:00:33,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 34 transitions, 148 flow [2024-06-27 18:00:33,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 34 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:00:33,589 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 68 flow [2024-06-27 18:00:33,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2024-06-27 18:00:33,590 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2024-06-27 18:00:33,590 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 68 flow [2024-06-27 18:00:33,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-06-27 18:00:33,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:33,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:00:33,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:00:33,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:33,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2052612936, now seen corresponding path program 1 times [2024-06-27 18:00:33,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:33,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645999273] [2024-06-27 18:00:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:00:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:00:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645999273] [2024-06-27 18:00:33,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645999273] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:00:33,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628644074] [2024-06-27 18:00:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:33,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:33,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:00:33,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:00:33,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 18:00:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:33,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-27 18:00:33,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:00:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:00:33,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:00:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:00:33,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628644074] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:00:33,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:00:33,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-06-27 18:00:33,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786273513] [2024-06-27 18:00:33,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:00:33,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:00:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:00:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:00:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:00:33,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-06-27 18:00:33,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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) [2024-06-27 18:00:33,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:00:33,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-06-27 18:00:33,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:00:33,991 INFO L124 PetriNetUnfolderBase]: 231/472 cut-off events. [2024-06-27 18:00:33,992 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-27 18:00:33,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 472 events. 231/472 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1716 event pairs, 18 based on Foata normal form. 30/502 useless extension candidates. Maximal degree in co-relation 319. Up to 110 conditions per place. [2024-06-27 18:00:33,996 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 57 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2024-06-27 18:00:33,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 67 transitions, 316 flow [2024-06-27 18:00:33,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:00:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:00:33,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-27 18:00:33,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-06-27 18:00:33,998 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 68 flow. Second operand 6 states and 103 transitions. [2024-06-27 18:00:33,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 67 transitions, 316 flow [2024-06-27 18:00:33,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 67 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:00:34,000 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 106 flow [2024-06-27 18:00:34,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-06-27 18:00:34,001 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2024-06-27 18:00:34,001 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 106 flow [2024-06-27 18:00:34,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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) [2024-06-27 18:00:34,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:34,002 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:00:34,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 18:00:34,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:34,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:34,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash 899917964, now seen corresponding path program 2 times [2024-06-27 18:00:34,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:34,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275964593] [2024-06-27 18:00:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:34,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-27 18:00:34,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:00:34,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275964593] [2024-06-27 18:00:34,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275964593] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:00:34,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243264527] [2024-06-27 18:00:34,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 18:00:34,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:00:34,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:00:34,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 18:00:34,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 18:00:34,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:00:34,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 18:00:34,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:00:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 18:00:34,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:00:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 18:00:34,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243264527] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:00:34,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:00:34,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-06-27 18:00:34,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963432871] [2024-06-27 18:00:34,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:00:34,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 18:00:34,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:00:34,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 18:00:34,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-06-27 18:00:34,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-06-27 18:00:34,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 106 flow. Second operand has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 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) [2024-06-27 18:00:34,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:00:34,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-06-27 18:00:34,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:00:35,215 INFO L124 PetriNetUnfolderBase]: 743/1515 cut-off events. [2024-06-27 18:00:35,216 INFO L125 PetriNetUnfolderBase]: For 1041/1041 co-relation queries the response was YES. [2024-06-27 18:00:35,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 1515 events. 743/1515 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6310 event pairs, 10 based on Foata normal form. 137/1652 useless extension candidates. Maximal degree in co-relation 1128. Up to 213 conditions per place. [2024-06-27 18:00:35,226 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 249 selfloop transitions, 69 changer transitions 0/322 dead transitions. [2024-06-27 18:00:35,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 322 transitions, 1716 flow [2024-06-27 18:00:35,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-06-27 18:00:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-06-27 18:00:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 585 transitions. [2024-06-27 18:00:35,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2024-06-27 18:00:35,230 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 106 flow. Second operand 34 states and 585 transitions. [2024-06-27 18:00:35,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 322 transitions, 1716 flow [2024-06-27 18:00:35,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 322 transitions, 1656 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-27 18:00:35,241 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 738 flow [2024-06-27 18:00:35,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-06-27 18:00:35,242 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 67 predicate places. [2024-06-27 18:00:35,242 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 738 flow [2024-06-27 18:00:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 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) [2024-06-27 18:00:35,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:35,243 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:00:35,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 18:00:35,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:35,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:35,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash 984859241, now seen corresponding path program 3 times [2024-06-27 18:00:35,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:35,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207905435] [2024-06-27 18:00:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-06-27 18:00:35,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:00:35,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207905435] [2024-06-27 18:00:35,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207905435] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:00:35,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138086376] [2024-06-27 18:00:35,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 18:00:35,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:35,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:00:35,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:00:35,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 18:00:35,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-06-27 18:00:35,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:00:35,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-27 18:00:35,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:00:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-06-27 18:00:36,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:00:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-06-27 18:00:36,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138086376] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:00:36,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:00:36,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-06-27 18:00:36,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793533981] [2024-06-27 18:00:36,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:00:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-27 18:00:36,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:00:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-27 18:00:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-06-27 18:00:36,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-06-27 18:00:36,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 738 flow. Second operand has 19 states, 19 states have (on average 11.421052631578947) internal successors, (217), 19 states have internal predecessors, (217), 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) [2024-06-27 18:00:36,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:00:36,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-06-27 18:00:36,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:00:38,087 INFO L124 PetriNetUnfolderBase]: 1687/3480 cut-off events. [2024-06-27 18:00:38,087 INFO L125 PetriNetUnfolderBase]: For 41323/41332 co-relation queries the response was YES. [2024-06-27 18:00:38,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13535 conditions, 3480 events. 1687/3480 cut-off events. For 41323/41332 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 17600 event pairs, 73 based on Foata normal form. 260/3713 useless extension candidates. Maximal degree in co-relation 12093. Up to 429 conditions per place. [2024-06-27 18:00:38,125 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 571 selfloop transitions, 186 changer transitions 0/765 dead transitions. [2024-06-27 18:00:38,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 765 transitions, 5746 flow [2024-06-27 18:00:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-06-27 18:00:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2024-06-27 18:00:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 1401 transitions. [2024-06-27 18:00:38,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104575163398693 [2024-06-27 18:00:38,134 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 738 flow. Second operand 85 states and 1401 transitions. [2024-06-27 18:00:38,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 765 transitions, 5746 flow [2024-06-27 18:00:38,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 765 transitions, 5648 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:00:38,203 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 3306 flow [2024-06-27 18:00:38,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=3306, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2024-06-27 18:00:38,206 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 209 predicate places. [2024-06-27 18:00:38,206 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 3306 flow [2024-06-27 18:00:38,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.421052631578947) internal successors, (217), 19 states have internal predecessors, (217), 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) [2024-06-27 18:00:38,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:38,206 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:00:38,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 18:00:38,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:38,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:38,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:38,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1178644297, now seen corresponding path program 4 times [2024-06-27 18:00:38,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:38,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321035626] [2024-06-27 18:00:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:38,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-06-27 18:00:38,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:00:38,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321035626] [2024-06-27 18:00:38,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321035626] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:00:38,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401602352] [2024-06-27 18:00:38,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 18:00:38,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:38,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:00:38,893 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) [2024-06-27 18:00:38,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 18:00:39,079 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 18:00:39,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:00:39,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 13 conjunts are in the unsatisfiable core [2024-06-27 18:00:39,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:00:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-06-27 18:00:39,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:00:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-06-27 18:00:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401602352] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:00:39,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:00:39,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-06-27 18:00:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510156033] [2024-06-27 18:00:39,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:00:39,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-27 18:00:39,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:00:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-27 18:00:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-06-27 18:00:39,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-06-27 18:00:39,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 3306 flow. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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) [2024-06-27 18:00:39,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:00:39,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-06-27 18:00:39,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:00:41,655 INFO L124 PetriNetUnfolderBase]: 2802/5652 cut-off events. [2024-06-27 18:00:41,655 INFO L125 PetriNetUnfolderBase]: For 355523/355523 co-relation queries the response was YES. [2024-06-27 18:00:41,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31005 conditions, 5652 events. 2802/5652 cut-off events. For 355523/355523 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 28857 event pairs, 114 based on Foata normal form. 243/5885 useless extension candidates. Maximal degree in co-relation 28242. Up to 739 conditions per place. [2024-06-27 18:00:41,746 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 367 selfloop transitions, 150 changer transitions 0/533 dead transitions. [2024-06-27 18:00:41,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 533 transitions, 9614 flow [2024-06-27 18:00:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-06-27 18:00:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-06-27 18:00:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 397 transitions. [2024-06-27 18:00:41,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6683501683501684 [2024-06-27 18:00:41,817 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 3306 flow. Second operand 22 states and 397 transitions. [2024-06-27 18:00:41,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 533 transitions, 9614 flow [2024-06-27 18:00:42,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 533 transitions, 7946 flow, removed 744 selfloop flow, removed 27 redundant places. [2024-06-27 18:00:42,576 INFO L231 Difference]: Finished difference. Result has 238 places, 274 transitions, 3242 flow [2024-06-27 18:00:42,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3242, PETRI_PLACES=238, PETRI_TRANSITIONS=274} [2024-06-27 18:00:42,577 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 213 predicate places. [2024-06-27 18:00:42,578 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 274 transitions, 3242 flow [2024-06-27 18:00:42,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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) [2024-06-27 18:00:42,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:42,579 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:00:42,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 18:00:42,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:42,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:42,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:42,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2002724459, now seen corresponding path program 5 times [2024-06-27 18:00:42,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:42,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201717008] [2024-06-27 18:00:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:42,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 20 proven. 81 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-06-27 18:00:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:00:43,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201717008] [2024-06-27 18:00:43,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201717008] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:00:43,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554831596] [2024-06-27 18:00:43,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 18:00:43,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:43,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:00:43,166 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:00:43,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 18:00:43,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-06-27 18:00:43,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:00:43,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 18:00:43,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:00:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 20 proven. 81 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-06-27 18:00:43,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:00:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 20 proven. 81 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-06-27 18:00:43,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554831596] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:00:43,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:00:43,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-06-27 18:00:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809935934] [2024-06-27 18:00:43,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:00:43,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-27 18:00:43,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:00:43,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-27 18:00:43,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-06-27 18:00:43,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-06-27 18:00:43,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 274 transitions, 3242 flow. Second operand has 17 states, 17 states have (on average 12.058823529411764) internal successors, (205), 17 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) [2024-06-27 18:00:43,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:00:43,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-06-27 18:00:43,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:00:47,977 INFO L124 PetriNetUnfolderBase]: 6101/12413 cut-off events. [2024-06-27 18:00:47,977 INFO L125 PetriNetUnfolderBase]: For 1404455/1404460 co-relation queries the response was YES. [2024-06-27 18:00:48,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57114 conditions, 12413 events. 6101/12413 cut-off events. For 1404455/1404460 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 75526 event pairs, 489 based on Foata normal form. 717/13017 useless extension candidates. Maximal degree in co-relation 51843. Up to 1533 conditions per place. [2024-06-27 18:00:48,188 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 693 selfloop transitions, 198 changer transitions 0/902 dead transitions. [2024-06-27 18:00:48,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 902 transitions, 12648 flow [2024-06-27 18:00:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 18:00:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 18:00:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 288 transitions. [2024-06-27 18:00:48,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:00:48,192 INFO L175 Difference]: Start difference. First operand has 238 places, 274 transitions, 3242 flow. Second operand 16 states and 288 transitions. [2024-06-27 18:00:48,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 902 transitions, 12648 flow [2024-06-27 18:00:49,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 902 transitions, 12142 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:00:49,558 INFO L231 Difference]: Finished difference. Result has 251 places, 382 transitions, 4606 flow [2024-06-27 18:00:49,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3088, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4606, PETRI_PLACES=251, PETRI_TRANSITIONS=382} [2024-06-27 18:00:49,560 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 226 predicate places. [2024-06-27 18:00:49,560 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 382 transitions, 4606 flow [2024-06-27 18:00:49,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.058823529411764) internal successors, (205), 17 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) [2024-06-27 18:00:49,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:49,560 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:00:49,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-06-27 18:00:49,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:49,763 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:49,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1391731655, now seen corresponding path program 6 times [2024-06-27 18:00:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:49,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161669598] [2024-06-27 18:00:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:49,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:00:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 399 proven. 469 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2024-06-27 18:00:50,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:00:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161669598] [2024-06-27 18:00:50,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161669598] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:00:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515091390] [2024-06-27 18:00:50,424 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 18:00:50,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:50,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:00:50,426 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) [2024-06-27 18:00:50,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 18:00:50,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-06-27 18:00:50,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:00:50,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 18:00:50,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:00:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 399 proven. 469 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2024-06-27 18:00:51,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:00:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 399 proven. 469 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2024-06-27 18:00:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515091390] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:00:51,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:00:51,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-06-27 18:00:51,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168195782] [2024-06-27 18:00:51,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:00:51,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-27 18:00:51,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:00:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-27 18:00:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-06-27 18:00:51,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-06-27 18:00:51,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 382 transitions, 4606 flow. Second operand has 23 states, 23 states have (on average 12.434782608695652) internal successors, (286), 23 states have internal predecessors, (286), 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) [2024-06-27 18:00:51,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:00:51,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-06-27 18:00:51,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:00:56,569 INFO L124 PetriNetUnfolderBase]: 8596/17407 cut-off events. [2024-06-27 18:00:56,570 INFO L125 PetriNetUnfolderBase]: For 1448916/1448926 co-relation queries the response was YES. [2024-06-27 18:00:56,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80579 conditions, 17407 events. 8596/17407 cut-off events. For 1448916/1448926 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 110649 event pairs, 493 based on Foata normal form. 544/17809 useless extension candidates. Maximal degree in co-relation 73102. Up to 2163 conditions per place. [2024-06-27 18:00:56,779 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 1059 selfloop transitions, 270 changer transitions 0/1340 dead transitions. [2024-06-27 18:00:56,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1340 transitions, 19396 flow [2024-06-27 18:00:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-06-27 18:00:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-06-27 18:00:56,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 394 transitions. [2024-06-27 18:00:56,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6632996632996633 [2024-06-27 18:00:56,782 INFO L175 Difference]: Start difference. First operand has 251 places, 382 transitions, 4606 flow. Second operand 22 states and 394 transitions. [2024-06-27 18:00:56,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 1340 transitions, 19396 flow [2024-06-27 18:00:58,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 1340 transitions, 19266 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 18:00:58,864 INFO L231 Difference]: Finished difference. Result has 274 places, 466 transitions, 6230 flow [2024-06-27 18:00:58,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4476, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6230, PETRI_PLACES=274, PETRI_TRANSITIONS=466} [2024-06-27 18:00:58,865 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 249 predicate places. [2024-06-27 18:00:58,865 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 466 transitions, 6230 flow [2024-06-27 18:00:58,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.434782608695652) internal successors, (286), 23 states have internal predecessors, (286), 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) [2024-06-27 18:00:58,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:00:58,866 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:00:58,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-06-27 18:00:59,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:00:59,072 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:00:59,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:00:59,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1921054933, now seen corresponding path program 7 times [2024-06-27 18:00:59,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:00:59,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168538510] [2024-06-27 18:00:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:00:59,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:00:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:01,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168538510] [2024-06-27 18:01:01,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168538510] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:01:01,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275410087] [2024-06-27 18:01:01,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 18:01:01,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:01:01,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:01:01,631 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) [2024-06-27 18:01:01,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-06-27 18:01:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:01,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 125 conjunts are in the unsatisfiable core [2024-06-27 18:01:01,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:01:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:02,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:01:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:02,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275410087] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:01:02,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:01:02,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-06-27 18:01:02,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918580666] [2024-06-27 18:01:02,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:01:02,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-06-27 18:01:02,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-06-27 18:01:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-06-27 18:01:02,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-06-27 18:01:02,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 466 transitions, 6230 flow. Second operand has 45 states, 45 states have (on average 8.822222222222223) internal successors, (397), 45 states have internal predecessors, (397), 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) [2024-06-27 18:01:02,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:02,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-06-27 18:01:02,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:21,961 INFO L124 PetriNetUnfolderBase]: 17369/38870 cut-off events. [2024-06-27 18:01:21,962 INFO L125 PetriNetUnfolderBase]: For 3595652/3595720 co-relation queries the response was YES. [2024-06-27 18:01:22,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283733 conditions, 38870 events. 17369/38870 cut-off events. For 3595652/3595720 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 312068 event pairs, 341 based on Foata normal form. 69/38709 useless extension candidates. Maximal degree in co-relation 224064. Up to 4848 conditions per place. [2024-06-27 18:01:22,977 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 2848 selfloop transitions, 83 changer transitions 2/2980 dead transitions. [2024-06-27 18:01:22,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 2980 transitions, 50588 flow [2024-06-27 18:01:22,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-06-27 18:01:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-06-27 18:01:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 689 transitions. [2024-06-27 18:01:22,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.57996632996633 [2024-06-27 18:01:22,979 INFO L175 Difference]: Start difference. First operand has 274 places, 466 transitions, 6230 flow. Second operand 44 states and 689 transitions. [2024-06-27 18:01:22,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 2980 transitions, 50588 flow [2024-06-27 18:01:46,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 2980 transitions, 49199 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-27 18:01:46,950 INFO L231 Difference]: Finished difference. Result has 306 places, 548 transitions, 6250 flow [2024-06-27 18:01:46,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5908, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6250, PETRI_PLACES=306, PETRI_TRANSITIONS=548} [2024-06-27 18:01:46,951 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 281 predicate places. [2024-06-27 18:01:46,952 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 548 transitions, 6250 flow [2024-06-27 18:01:46,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.822222222222223) internal successors, (397), 45 states have internal predecessors, (397), 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) [2024-06-27 18:01:46,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:46,952 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:46,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-06-27 18:01:47,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:01:47,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:01:47,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1397900481, now seen corresponding path program 8 times [2024-06-27 18:01:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:47,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692583020] [2024-06-27 18:01:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:47,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 1961 trivial. 0 not checked. [2024-06-27 18:01:47,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692583020] [2024-06-27 18:01:47,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692583020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:47,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:47,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:01:47,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274901432] [2024-06-27 18:01:47,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:47,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:01:47,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:47,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:01:47,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:01:47,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-06-27 18:01:47,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 548 transitions, 6250 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-06-27 18:01:47,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:47,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-06-27 18:01:47,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:56,636 INFO L124 PetriNetUnfolderBase]: 10255/24970 cut-off events. [2024-06-27 18:01:56,636 INFO L125 PetriNetUnfolderBase]: For 3981520/3981728 co-relation queries the response was YES. [2024-06-27 18:01:56,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243379 conditions, 24970 events. 10255/24970 cut-off events. For 3981520/3981728 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 205515 event pairs, 1118 based on Foata normal form. 3722/28469 useless extension candidates. Maximal degree in co-relation 243252. Up to 12682 conditions per place. [2024-06-27 18:01:57,082 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 876 selfloop transitions, 4 changer transitions 0/928 dead transitions. [2024-06-27 18:01:57,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 928 transitions, 13008 flow [2024-06-27 18:01:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:01:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:01:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-27 18:01:57,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-06-27 18:01:57,083 INFO L175 Difference]: Start difference. First operand has 306 places, 548 transitions, 6250 flow. Second operand 3 states and 49 transitions. [2024-06-27 18:01:57,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 928 transitions, 13008 flow [2024-06-27 18:02:07,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 928 transitions, 13006 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:07,957 INFO L231 Difference]: Finished difference. Result has 306 places, 548 transitions, 6256 flow [2024-06-27 18:02:07,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6248, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=6256, PETRI_PLACES=306, PETRI_TRANSITIONS=548} [2024-06-27 18:02:07,958 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 281 predicate places. [2024-06-27 18:02:07,958 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 548 transitions, 6256 flow [2024-06-27 18:02:07,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-06-27 18:02:07,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:07,958 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:07,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:02:07,959 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:02:07,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:07,959 INFO L85 PathProgramCache]: Analyzing trace with hash 242720173, now seen corresponding path program 9 times [2024-06-27 18:02:07,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:07,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529609758] [2024-06-27 18:02:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 995 proven. 96 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-06-27 18:02:08,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:08,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529609758] [2024-06-27 18:02:08,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529609758] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:02:08,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123254293] [2024-06-27 18:02:08,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 18:02:08,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:08,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:08,807 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:02:08,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-06-27 18:02:09,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-06-27 18:02:09,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:02:09,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 18:02:09,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:02:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1091 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-06-27 18:02:09,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 18:02:09,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123254293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:09,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 18:02:09,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-06-27 18:02:09,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372566841] [2024-06-27 18:02:09,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:09,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-27 18:02:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-27 18:02:09,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-06-27 18:02:09,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-06-27 18:02:09,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 548 transitions, 6256 flow. Second operand has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 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) [2024-06-27 18:02:09,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:09,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-06-27 18:02:09,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:18,070 INFO L124 PetriNetUnfolderBase]: 9701/22136 cut-off events. [2024-06-27 18:02:18,071 INFO L125 PetriNetUnfolderBase]: For 3639182/3639196 co-relation queries the response was YES. [2024-06-27 18:02:18,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207158 conditions, 22136 events. 9701/22136 cut-off events. For 3639182/3639196 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 163300 event pairs, 185 based on Foata normal form. 103/21802 useless extension candidates. Maximal degree in co-relation 201120. Up to 3566 conditions per place. [2024-06-27 18:02:19,018 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 2008 selfloop transitions, 147 changer transitions 0/2195 dead transitions. [2024-06-27 18:02:19,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 2195 transitions, 24286 flow [2024-06-27 18:02:19,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-06-27 18:02:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-06-27 18:02:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 401 transitions. [2024-06-27 18:02:19,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6457326892109501 [2024-06-27 18:02:19,021 INFO L175 Difference]: Start difference. First operand has 306 places, 548 transitions, 6256 flow. Second operand 23 states and 401 transitions. [2024-06-27 18:02:19,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 2195 transitions, 24286 flow [2024-06-27 18:02:26,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 2195 transitions, 24188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:26,084 INFO L231 Difference]: Finished difference. Result has 326 places, 545 transitions, 6490 flow [2024-06-27 18:02:26,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6196, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6490, PETRI_PLACES=326, PETRI_TRANSITIONS=545} [2024-06-27 18:02:26,086 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 301 predicate places. [2024-06-27 18:02:26,086 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 545 transitions, 6490 flow [2024-06-27 18:02:26,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 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) [2024-06-27 18:02:26,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:26,087 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:26,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-06-27 18:02:26,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-06-27 18:02:26,306 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 18:02:26,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:26,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2120763608, now seen corresponding path program 10 times [2024-06-27 18:02:26,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:26,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935917225] [2024-06-27 18:02:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:26,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-06-27 18:02:27,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:27,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935917225] [2024-06-27 18:02:27,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935917225] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:02:27,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96942964] [2024-06-27 18:02:27,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 18:02:27,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:27,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:27,085 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:02:27,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-06-27 18:02:27,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 18:02:27,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:02:27,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 18:02:27,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:02:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-06-27 18:02:27,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 18:02:27,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96942964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:27,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 18:02:27,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-06-27 18:02:27,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274417141] [2024-06-27 18:02:27,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:27,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-27 18:02:27,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:27,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-27 18:02:27,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-06-27 18:02:27,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-06-27 18:02:27,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 545 transitions, 6490 flow. Second operand has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 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) [2024-06-27 18:02:27,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:27,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-06-27 18:02:27,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:31,945 INFO L124 PetriNetUnfolderBase]: 5308/12494 cut-off events. [2024-06-27 18:02:31,945 INFO L125 PetriNetUnfolderBase]: For 419352/419362 co-relation queries the response was YES. [2024-06-27 18:02:32,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78523 conditions, 12494 events. 5308/12494 cut-off events. For 419352/419362 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 83001 event pairs, 248 based on Foata normal form. 93/12438 useless extension candidates. Maximal degree in co-relation 77805. Up to 2163 conditions per place. [2024-06-27 18:02:32,073 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 0 selfloop transitions, 0 changer transitions 2185/2185 dead transitions. [2024-06-27 18:02:32,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 2185 transitions, 26651 flow [2024-06-27 18:02:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-06-27 18:02:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-06-27 18:02:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 400 transitions. [2024-06-27 18:02:32,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.644122383252818 [2024-06-27 18:02:32,075 INFO L175 Difference]: Start difference. First operand has 326 places, 545 transitions, 6490 flow. Second operand 23 states and 400 transitions. [2024-06-27 18:02:32,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 2185 transitions, 26651 flow [2024-06-27 18:02:34,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 2185 transitions, 25145 flow, removed 0 selfloop flow, removed 24 redundant places. [2024-06-27 18:02:34,223 INFO L231 Difference]: Finished difference. Result has 321 places, 0 transitions, 0 flow [2024-06-27 18:02:34,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5980, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=321, PETRI_TRANSITIONS=0} [2024-06-27 18:02:34,224 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 296 predicate places. [2024-06-27 18:02:34,225 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 0 transitions, 0 flow [2024-06-27 18:02:34,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 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) [2024-06-27 18:02:34,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 3 remaining) [2024-06-27 18:02:34,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-06-27 18:02:34,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-06-27 18:02:34,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-06-27 18:02:34,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-06-27 18:02:34,430 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1] [2024-06-27 18:02:34,435 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:02:34,436 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:02:34,440 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-27 18:02:34,441 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-27 18:02:34,442 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:02:34 BasicIcfg [2024-06-27 18:02:34,442 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:02:34,442 INFO L158 Benchmark]: Toolchain (without parser) took 123067.88ms. Allocated memory was 148.9MB in the beginning and 11.9GB in the end (delta: 11.7GB). Free memory was 76.5MB in the beginning and 8.8GB in the end (delta: -8.7GB). Peak memory consumption was 3.5GB. Max. memory is 16.1GB. [2024-06-27 18:02:34,443 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:02:34,443 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 148.9MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:02:34,443 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.10ms. Allocated memory is still 148.9MB. Free memory was 76.4MB in the beginning and 79.2MB in the end (delta: -2.9MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-06-27 18:02:34,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.93ms. Allocated memory is still 148.9MB. Free memory was 79.2MB in the beginning and 76.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:02:34,444 INFO L158 Benchmark]: Boogie Preprocessor took 36.93ms. Allocated memory is still 148.9MB. Free memory was 76.7MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:02:34,444 INFO L158 Benchmark]: RCFGBuilder took 497.25ms. Allocated memory is still 148.9MB. Free memory was 74.5MB in the beginning and 117.0MB in the end (delta: -42.5MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2024-06-27 18:02:34,444 INFO L158 Benchmark]: TraceAbstraction took 121736.32ms. Allocated memory was 148.9MB in the beginning and 11.9GB in the end (delta: 11.7GB). Free memory was 117.0MB in the beginning and 8.8GB in the end (delta: -8.6GB). Peak memory consumption was 3.6GB. Max. memory is 16.1GB. [2024-06-27 18:02:34,446 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 148.9MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 738.10ms. Allocated memory is still 148.9MB. Free memory was 76.4MB in the beginning and 79.2MB in the end (delta: -2.9MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.93ms. Allocated memory is still 148.9MB. Free memory was 79.2MB in the beginning and 76.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.93ms. Allocated memory is still 148.9MB. Free memory was 76.7MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.25ms. Allocated memory is still 148.9MB. Free memory was 74.5MB in the beginning and 117.0MB in the end (delta: -42.5MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * TraceAbstraction took 121736.32ms. Allocated memory was 148.9MB in the beginning and 11.9GB in the end (delta: 11.7GB). Free memory was 117.0MB in the beginning and 8.8GB in the end (delta: -8.6GB). Peak memory consumption was 3.6GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1343]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 121.7s, OverallIterations: 13, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 107.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2508 SdHoareTripleChecker+Valid, 7.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2494 mSDsluCounter, 855 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 854 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22925 IncrementalHoareTripleChecker+Invalid, 22981 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 1 mSDtfsCounter, 22925 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2279 GetRequests, 1995 SyntacticMatches, 15 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2765 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6490occurred in iteration=12, InterpolantAutomatonStates: 287, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 2644 NumberOfCodeBlocks, 2554 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 3379 ConstructedInterpolants, 0 QuantifiedInterpolants, 8440 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5525 ConjunctsInSsa, 219 ConjunctsInUnsatCore, 29 InterpolantComputations, 6 PerfectInterpolantSequences, 16593/25434 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 18:02:34,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE