./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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-ext/35_double_lock_p3_vs-pthread.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:02:20,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:02:20,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:02:20,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:02:20,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:02:20,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:02:20,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:02:20,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:02:20,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:02:20,573 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:02:20,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:02:20,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:02:20,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:02:20,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:02:20,576 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:02:20,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:02:20,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:02:20,577 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:02:20,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:02:20,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:02:20,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:02:20,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:02:20,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:02:20,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:02:20,578 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:02:20,578 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:02:20,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:02:20,579 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:02:20,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:02:20,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:02:20,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:02:20,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:02:20,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:02:20,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:02:20,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:02:20,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:02:20,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:02:20,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:02:20,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:02:20,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:02:20,582 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:02:20,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:02:20,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:02:20,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:02:20,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:02:21,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:02:21,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:02:21,009 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:02:21,010 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:02:21,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.yml/witness.yml [2024-02-07 19:02:21,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:02:21,188 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:02:21,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-02-07 19:02:22,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:02:22,795 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:02:22,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-02-07 19:02:22,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65181f866/dfc3433aade34adca2a4a3e8a4f443ed/FLAGd911b5c55 [2024-02-07 19:02:23,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65181f866/dfc3433aade34adca2a4a3e8a4f443ed [2024-02-07 19:02:23,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:02:23,065 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:02:23,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:02:23,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:02:23,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:02:23,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:02:21" (1/2) ... [2024-02-07 19:02:23,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e47a71c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:02:23, skipping insertion in model container [2024-02-07 19:02:23,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:02:21" (1/2) ... [2024-02-07 19:02:23,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29d2b566 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:02:23, skipping insertion in model container [2024-02-07 19:02:23,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:02:23" (2/2) ... [2024-02-07 19:02:23,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e47a71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23, skipping insertion in model container [2024-02-07 19:02:23,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:02:23" (2/2) ... [2024-02-07 19:02:23,089 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:02:23,137 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:02:23,141 INFO L76 edCorrectnessWitness]: Location invariant before [L695-L695] count == 0 [2024-02-07 19:02:23,141 INFO L76 edCorrectnessWitness]: Location invariant before [L696-L696] count == -1 [2024-02-07 19:02:23,141 INFO L76 edCorrectnessWitness]: Location invariant before [L691-L691] count == 0 [2024-02-07 19:02:23,141 INFO L76 edCorrectnessWitness]: Location invariant before [L697-L697] count == 0 [2024-02-07 19:02:23,142 INFO L76 edCorrectnessWitness]: Location invariant before [L693-L693] count == 0 [2024-02-07 19:02:23,142 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] count == 0 [2024-02-07 19:02:23,142 INFO L76 edCorrectnessWitness]: Location invariant before [L692-L692] count == 1 [2024-02-07 19:02:23,213 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:02:23,702 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i[30711,30724] [2024-02-07 19:02:23,728 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:02:23,754 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:02:23,895 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i[30711,30724] [2024-02-07 19:02:23,900 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:02:23,965 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:02:23,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23 WrapperNode [2024-02-07 19:02:23,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:02:23,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:02:23,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:02:23,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:02:23,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,054 INFO L138 Inliner]: procedures = 165, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-02-07 19:02:24,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:02:24,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:02:24,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:02:24,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:02:24,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,107 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-02-07 19:02:24,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,131 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:02:24,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:02:24,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:02:24,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:02:24,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (1/1) ... [2024-02-07 19:02:24,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:02:24,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:02:24,216 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) [2024-02-07 19:02:24,222 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 [2024-02-07 19:02:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-02-07 19:02:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-02-07 19:02:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-07 19:02:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-07 19:02:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:02:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:02:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:02:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:02:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:02:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:02:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:02:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:02:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:02:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:02:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:02:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:02:24,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:02:24,246 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:02:24,343 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:02:24,345 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:02:24,503 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:02:24,506 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:02:24,623 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:02:24,623 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-07 19:02:24,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:02:24 BoogieIcfgContainer [2024-02-07 19:02:24,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:02:24,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:02:24,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:02:24,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:02:24,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:02:21" (1/4) ... [2024-02-07 19:02:24,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653e6615 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:02:24, skipping insertion in model container [2024-02-07 19:02:24,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:02:23" (2/4) ... [2024-02-07 19:02:24,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653e6615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:02:24, skipping insertion in model container [2024-02-07 19:02:24,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:02:23" (3/4) ... [2024-02-07 19:02:24,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653e6615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:02:24, skipping insertion in model container [2024-02-07 19:02:24,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:02:24" (4/4) ... [2024-02-07 19:02:24,635 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs-pthread.i [2024-02-07 19:02:24,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:02:24,649 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-02-07 19:02:24,649 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:02:24,690 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:02:24,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 46 transitions, 100 flow [2024-02-07 19:02:24,758 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2024-02-07 19:02:24,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:02:24,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 47 events. 3/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-02-07 19:02:24,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 46 transitions, 100 flow [2024-02-07 19:02:24,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 45 transitions, 97 flow [2024-02-07 19:02:24,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:02:24,783 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;@4f7f4589, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:02:24,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-02-07 19:02:24,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:02:24,793 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-02-07 19:02:24,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:02:24,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:02:24,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:02:24,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:02:24,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:02:24,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1779520921, now seen corresponding path program 1 times [2024-02-07 19:02:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:02:24,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579559663] [2024-02-07 19:02:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:02:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:02:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:02:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:02:25,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:02:25,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579559663] [2024-02-07 19:02:25,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579559663] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:02:25,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:02:25,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:02:25,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341930894] [2024-02-07 19:02:25,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:02:25,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:02:25,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:02:25,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:02:25,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:02:25,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-02-07 19:02:25,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 97 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) [2024-02-07 19:02:25,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:02:25,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-02-07 19:02:25,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:02:25,198 INFO L124 PetriNetUnfolderBase]: 328/715 cut-off events. [2024-02-07 19:02:25,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:02:25,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 715 events. 328/715 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3837 event pairs, 273 based on Foata normal form. 152/845 useless extension candidates. Maximal degree in co-relation 1323. Up to 526 conditions per place. [2024-02-07 19:02:25,206 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 25 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-02-07 19:02:25,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 155 flow [2024-02-07 19:02:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:02:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:02:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-02-07 19:02:25,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-02-07 19:02:25,223 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 97 flow. Second operand 3 states and 84 transitions. [2024-02-07 19:02:25,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 155 flow [2024-02-07 19:02:25,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:02:25,230 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 114 flow [2024-02-07 19:02:25,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-02-07 19:02:25,237 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2024-02-07 19:02:25,237 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 114 flow [2024-02-07 19:02:25,237 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) [2024-02-07 19:02:25,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:02:25,237 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:02:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:02:25,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:02:25,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:02:25,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1041506010, now seen corresponding path program 1 times [2024-02-07 19:02:25,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:02:25,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122470126] [2024-02-07 19:02:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:02:25,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:02:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:02:25,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:02:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:02:25,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:02:25,290 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:02:25,291 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-02-07 19:02:25,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 18 remaining) [2024-02-07 19:02:25,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 18 remaining) [2024-02-07 19:02:25,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 18 remaining) [2024-02-07 19:02:25,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 18 remaining) [2024-02-07 19:02:25,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 18 remaining) [2024-02-07 19:02:25,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 18 remaining) [2024-02-07 19:02:25,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 18 remaining) [2024-02-07 19:02:25,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 18 remaining) [2024-02-07 19:02:25,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-02-07 19:02:25,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 18 remaining) [2024-02-07 19:02:25,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 18 remaining) [2024-02-07 19:02:25,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 18 remaining) [2024-02-07 19:02:25,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 18 remaining) [2024-02-07 19:02:25,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 18 remaining) [2024-02-07 19:02:25,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 18 remaining) [2024-02-07 19:02:25,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 18 remaining) [2024-02-07 19:02:25,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 18 remaining) [2024-02-07 19:02:25,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:02:25,296 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 19:02:25,298 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:02:25,298 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:02:25,317 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:02:25,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 85 transitions, 190 flow [2024-02-07 19:02:25,326 INFO L124 PetriNetUnfolderBase]: 4/75 cut-off events. [2024-02-07 19:02:25,327 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:02:25,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 75 events. 4/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 178 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2024-02-07 19:02:25,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 85 transitions, 190 flow [2024-02-07 19:02:25,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 153 flow [2024-02-07 19:02:25,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:02:25,330 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;@4f7f4589, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:02:25,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-02-07 19:02:25,332 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:02:25,332 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2024-02-07 19:02:25,332 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:02:25,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:02:25,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:02:25,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:02:25,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:02:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash -41937732, now seen corresponding path program 1 times [2024-02-07 19:02:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:02:25,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313145239] [2024-02-07 19:02:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:02:25,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:02:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:02:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:02:25,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:02:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313145239] [2024-02-07 19:02:25,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313145239] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:02:25,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:02:25,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:02:25,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858654053] [2024-02-07 19:02:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:02:25,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:02:25,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:02:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:02:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:02:25,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 85 [2024-02-07 19:02:25,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-02-07 19:02:25,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:02:25,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 85 [2024-02-07 19:02:25,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:02:27,363 INFO L124 PetriNetUnfolderBase]: 12511/22021 cut-off events. [2024-02-07 19:02:27,364 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-02-07 19:02:27,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41597 conditions, 22021 events. 12511/22021 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 181266 event pairs, 9474 based on Foata normal form. 4274/25208 useless extension candidates. Maximal degree in co-relation 41586. Up to 15259 conditions per place. [2024-02-07 19:02:27,511 INFO L140 encePairwiseOnDemand]: 58/85 looper letters, 68 selfloop transitions, 14 changer transitions 0/99 dead transitions. [2024-02-07 19:02:27,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 99 transitions, 380 flow [2024-02-07 19:02:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:02:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:02:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-02-07 19:02:27,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-02-07 19:02:27,514 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 153 flow. Second operand 3 states and 174 transitions. [2024-02-07 19:02:27,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 99 transitions, 380 flow [2024-02-07 19:02:27,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 99 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:02:27,517 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 258 flow [2024-02-07 19:02:27,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-02-07 19:02:27,518 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2024-02-07 19:02:27,518 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 258 flow [2024-02-07 19:02:27,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-02-07 19:02:27,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:02:27,519 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:02:27,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:02:27,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:02:27,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:02:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1821359268, now seen corresponding path program 1 times [2024-02-07 19:02:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:02:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801923383] [2024-02-07 19:02:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:02:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:02:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:02:27,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:02:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:02:27,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:02:27,553 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:02:27,553 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-02-07 19:02:27,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 26 remaining) [2024-02-07 19:02:27,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 26 remaining) [2024-02-07 19:02:27,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 26 remaining) [2024-02-07 19:02:27,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 26 remaining) [2024-02-07 19:02:27,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 26 remaining) [2024-02-07 19:02:27,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 26 remaining) [2024-02-07 19:02:27,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 26 remaining) [2024-02-07 19:02:27,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (17 of 26 remaining) [2024-02-07 19:02:27,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2024-02-07 19:02:27,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 26 remaining) [2024-02-07 19:02:27,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 26 remaining) [2024-02-07 19:02:27,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 26 remaining) [2024-02-07 19:02:27,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 26 remaining) [2024-02-07 19:02:27,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 26 remaining) [2024-02-07 19:02:27,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 26 remaining) [2024-02-07 19:02:27,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 26 remaining) [2024-02-07 19:02:27,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 26 remaining) [2024-02-07 19:02:27,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 26 remaining) [2024-02-07 19:02:27,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 26 remaining) [2024-02-07 19:02:27,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 26 remaining) [2024-02-07 19:02:27,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 26 remaining) [2024-02-07 19:02:27,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 26 remaining) [2024-02-07 19:02:27,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 26 remaining) [2024-02-07 19:02:27,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 26 remaining) [2024-02-07 19:02:27,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 26 remaining) [2024-02-07 19:02:27,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:02:27,558 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 19:02:27,559 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:02:27,559 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:02:27,583 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:02:27,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 124 transitions, 284 flow [2024-02-07 19:02:27,593 INFO L124 PetriNetUnfolderBase]: 5/103 cut-off events. [2024-02-07 19:02:27,594 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-07 19:02:27,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 103 events. 5/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 310 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 114. Up to 4 conditions per place. [2024-02-07 19:02:27,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 124 transitions, 284 flow [2024-02-07 19:02:27,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 95 transitions, 211 flow [2024-02-07 19:02:27,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:02:27,597 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;@4f7f4589, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:02:27,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-02-07 19:02:27,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:02:27,599 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2024-02-07 19:02:27,599 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:02:27,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:02:27,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:02:27,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 19:02:27,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:02:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1205067829, now seen corresponding path program 1 times [2024-02-07 19:02:27,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:02:27,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881984918] [2024-02-07 19:02:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:02:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:02:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:02:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:02:27,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:02:27,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881984918] [2024-02-07 19:02:27,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881984918] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:02:27,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:02:27,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:02:27,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550082424] [2024-02-07 19:02:27,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:02:27,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:02:27,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:02:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:02:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:02:27,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 124 [2024-02-07 19:02:27,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-02-07 19:02:27,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:02:27,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 124 [2024-02-07 19:02:27,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand