./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/test-hard1.wvr.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/weaver/test-hard1.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/test-hard1.wvr.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 21:58:41,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:58:41,446 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:58:41,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:58:41,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:58:41,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:58:41,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:58:41,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:58:41,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:58:41,481 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:58:41,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:58:41,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:58:41,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:58:41,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:58:41,484 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:58:41,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:58:41,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:58:41,484 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:58:41,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:58:41,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:58:41,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:58:41,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:58:41,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:58:41,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:58:41,486 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:58:41,486 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:58:41,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:58:41,487 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:58:41,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:58:41,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:58:41,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:58:41,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:58:41,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:58:41,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:58:41,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:58:41,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:58:41,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:58:41,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:58:41,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:58:41,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:58:41,490 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:58:41,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:58:41,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:58:41,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:58:41,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:58:41,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:58:41,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:58:41,809 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:58:41,810 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:58:41,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/test-hard1.wvr.yml/witness.yml [2024-06-27 21:58:41,884 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:58:41,884 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:58:41,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-06-27 21:58:42,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:58:43,029 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:58:43,029 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-06-27 21:58:43,036 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c4992b5/203caabb5557484791b5ffd79941f3ba/FLAG818e64a25 [2024-06-27 21:58:43,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c4992b5/203caabb5557484791b5ffd79941f3ba [2024-06-27 21:58:43,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:58:43,048 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:58:43,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:58:43,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:58:43,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:58:43,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:58:41" (1/2) ... [2024-06-27 21:58:43,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed96d5a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:58:43, skipping insertion in model container [2024-06-27 21:58:43,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:58:41" (1/2) ... [2024-06-27 21:58:43,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a22c39f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:58:43, skipping insertion in model container [2024-06-27 21:58:43,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:58:43" (2/2) ... [2024-06-27 21:58:43,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed96d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43, skipping insertion in model container [2024-06-27 21:58:43,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:58:43" (2/2) ... [2024-06-27 21:58:43,061 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:58:43,073 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:58:43,077 INFO L97 edCorrectnessWitness]: Location invariant before [L133-L133] ! multithreaded || (((((((2147483648LL + (long long )m) + (long long )n1 >= 0LL && (2147483648LL + (long long )m) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (6442450943LL - (long long )m) + (long long )n1 >= 0LL) && (6442450943LL - (long long )m) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) [2024-06-27 21:58:43,077 INFO L97 edCorrectnessWitness]: Location invariant before [L130-L130] ! multithreaded || (((((((2147483648LL + (long long )m) + (long long )n1 >= 0LL && (2147483648LL + (long long )m) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (6442450943LL - (long long )m) + (long long )n1 >= 0LL) && (6442450943LL - (long long )m) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) [2024-06-27 21:58:43,077 INFO L97 edCorrectnessWitness]: Location invariant before [L132-L132] ! multithreaded || (((((((2147483648LL + (long long )m) + (long long )n1 >= 0LL && (2147483648LL + (long long )m) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (6442450943LL - (long long )m) + (long long )n1 >= 0LL) && (6442450943LL - (long long )m) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) [2024-06-27 21:58:43,077 INFO L97 edCorrectnessWitness]: Location invariant before [L131-L131] ! multithreaded || (((((((2147483648LL + (long long )m) + (long long )n1 >= 0LL && (2147483648LL + (long long )m) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (6442450943LL - (long long )m) + (long long )n1 >= 0LL) && (6442450943LL - (long long )m) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) [2024-06-27 21:58:43,078 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:58:43,078 INFO L106 edCorrectnessWitness]: ghost_update [L129-L129] multithreaded = 1; [2024-06-27 21:58:43,098 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:58:43,250 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3425,3438] [2024-06-27 21:58:43,258 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:58:43,264 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:58:43,318 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3425,3438] [2024-06-27 21:58:43,319 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:58:43,332 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:58:43,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43 WrapperNode [2024-06-27 21:58:43,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:58:43,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:58:43,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:58:43,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:58:43,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,364 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2024-06-27 21:58:43,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:58:43,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:58:43,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:58:43,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:58:43,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,397 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 21:58:43,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,401 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,408 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:58:43,409 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:58:43,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:58:43,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:58:43,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (1/1) ... [2024-06-27 21:58:43,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:58:43,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:58:43,472 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 21:58:43,504 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 21:58:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:58:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 21:58:43,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 21:58:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 21:58:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 21:58:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 21:58:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 21:58:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 21:58:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 21:58:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:58:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:58:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:58:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:58:43,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:58:43,520 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 21:58:43,622 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:58:43,624 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:58:43,965 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:58:43,965 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:58:44,085 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:58:44,085 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-27 21:58:44,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:58:44 BoogieIcfgContainer [2024-06-27 21:58:44,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:58:44,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:58:44,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:58:44,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:58:44,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:58:41" (1/4) ... [2024-06-27 21:58:44,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6682e68c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:58:44, skipping insertion in model container [2024-06-27 21:58:44,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:58:43" (2/4) ... [2024-06-27 21:58:44,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6682e68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:58:44, skipping insertion in model container [2024-06-27 21:58:44,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:58:43" (3/4) ... [2024-06-27 21:58:44,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6682e68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:58:44, skipping insertion in model container [2024-06-27 21:58:44,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:58:44" (4/4) ... [2024-06-27 21:58:44,096 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2024-06-27 21:58:44,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:58:44,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 21:58:44,111 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:58:44,160 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 21:58:44,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions, 134 flow [2024-06-27 21:58:44,226 INFO L124 PetriNetUnfolderBase]: 4/49 cut-off events. [2024-06-27 21:58:44,227 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 21:58:44,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 49 events. 4/49 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 21:58:44,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 53 transitions, 134 flow [2024-06-27 21:58:44,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 120 flow [2024-06-27 21:58:44,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:58:44,260 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;@6454ee71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:58:44,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 21:58:44,265 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:58:44,265 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:58:44,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:58:44,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:58:44,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:58:44,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:58:44,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:58:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash 351362237, now seen corresponding path program 1 times [2024-06-27 21:58:44,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:58:44,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116247376] [2024-06-27 21:58:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:58:44,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:58:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:58:44,645 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 21:58:44,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:58:44,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116247376] [2024-06-27 21:58:44,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116247376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:58:44,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:58:44,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:58:44,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211637663] [2024-06-27 21:58:44,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:58:44,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:58:44,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:58:44,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:58:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:58:44,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-06-27 21:58:44,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 21:58:44,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:58:44,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-06-27 21:58:44,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:58:45,154 INFO L124 PetriNetUnfolderBase]: 2073/3113 cut-off events. [2024-06-27 21:58:45,154 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-06-27 21:58:45,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5865 conditions, 3113 events. 2073/3113 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15796 event pairs, 219 based on Foata normal form. 16/2956 useless extension candidates. Maximal degree in co-relation 5291. Up to 2382 conditions per place. [2024-06-27 21:58:45,174 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 47 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2024-06-27 21:58:45,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 291 flow [2024-06-27 21:58:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:58:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:58:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-06-27 21:58:45,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7861635220125787 [2024-06-27 21:58:45,186 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 120 flow. Second operand 3 states and 125 transitions. [2024-06-27 21:58:45,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 291 flow [2024-06-27 21:58:45,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 261 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 21:58:45,193 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 143 flow [2024-06-27 21:58:45,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2024-06-27 21:58:45,197 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2024-06-27 21:58:45,197 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 143 flow [2024-06-27 21:58:45,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 21:58:45,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:58:45,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:58:45,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:58:45,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:58:45,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:58:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2093467268, now seen corresponding path program 1 times [2024-06-27 21:58:45,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:58:45,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208821961] [2024-06-27 21:58:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:58:45,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:58:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:58:45,433 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 21:58:45,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:58:45,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208821961] [2024-06-27 21:58:45,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208821961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:58:45,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:58:45,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 21:58:45,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944072744] [2024-06-27 21:58:45,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:58:45,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:58:45,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:58:45,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:58:45,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:58:45,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-06-27 21:58:45,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 21:58:45,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:58:45,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-06-27 21:58:45,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:58:45,795 INFO L124 PetriNetUnfolderBase]: 2321/3526 cut-off events. [2024-06-27 21:58:45,796 INFO L125 PetriNetUnfolderBase]: For 732/912 co-relation queries the response was YES. [2024-06-27 21:58:45,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7987 conditions, 3526 events. 2321/3526 cut-off events. For 732/912 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 18748 event pairs, 177 based on Foata normal form. 30/3419 useless extension candidates. Maximal degree in co-relation 1655. Up to 2477 conditions per place. [2024-06-27 21:58:45,819 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 66 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2024-06-27 21:58:45,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 94 transitions, 399 flow [2024-06-27 21:58:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:58:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:58:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-06-27 21:58:45,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8066037735849056 [2024-06-27 21:58:45,826 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 143 flow. Second operand 4 states and 171 transitions. [2024-06-27 21:58:45,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 94 transitions, 399 flow [2024-06-27 21:58:45,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 94 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:58:45,832 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 193 flow [2024-06-27 21:58:45,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2024-06-27 21:58:45,834 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2024-06-27 21:58:45,835 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 193 flow [2024-06-27 21:58:45,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 21:58:45,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:58:45,836 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:58:45,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:58:45,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:58:45,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:58:45,841 INFO L85 PathProgramCache]: Analyzing trace with hash -735997287, now seen corresponding path program 1 times [2024-06-27 21:58:45,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:58:45,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110047895] [2024-06-27 21:58:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:58:45,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:58:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:58:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:58:46,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:58:46,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110047895] [2024-06-27 21:58:46,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110047895] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:58:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922225945] [2024-06-27 21:58:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:58:46,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:58:46,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:58:46,141 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 21:58:46,173 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 21:58:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:58:46,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 21:58:46,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:58:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:58:46,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 21:58:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:58:46,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922225945] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 21:58:46,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 21:58:46,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-06-27 21:58:46,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181211093] [2024-06-27 21:58:46,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 21:58:46,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 21:58:46,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:58:46,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 21:58:46,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-06-27 21:58:46,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-06-27 21:58:46,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 193 flow. Second operand has 11 states, 11 states have (on average 24.636363636363637) internal successors, (271), 11 states have internal predecessors, (271), 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 21:58:46,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:58:46,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-06-27 21:58:46,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:58:48,592 INFO L124 PetriNetUnfolderBase]: 11199/16521 cut-off events. [2024-06-27 21:58:48,592 INFO L125 PetriNetUnfolderBase]: For 12209/12805 co-relation queries the response was YES. [2024-06-27 21:58:48,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43633 conditions, 16521 events. 11199/16521 cut-off events. For 12209/12805 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 108319 event pairs, 423 based on Foata normal form. 454/16728 useless extension candidates. Maximal degree in co-relation 9166. Up to 6320 conditions per place. [2024-06-27 21:58:48,698 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 203 selfloop transitions, 49 changer transitions 0/271 dead transitions. [2024-06-27 21:58:48,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 271 transitions, 1374 flow [2024-06-27 21:58:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 21:58:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 21:58:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 543 transitions. [2024-06-27 21:58:48,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8537735849056604 [2024-06-27 21:58:48,701 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 193 flow. Second operand 12 states and 543 transitions. [2024-06-27 21:58:48,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 271 transitions, 1374 flow [2024-06-27 21:58:48,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 271 transitions, 1353 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 21:58:48,706 INFO L231 Difference]: Finished difference. Result has 71 places, 96 transitions, 632 flow [2024-06-27 21:58:48,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=632, PETRI_PLACES=71, PETRI_TRANSITIONS=96} [2024-06-27 21:58:48,707 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2024-06-27 21:58:48,707 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 96 transitions, 632 flow [2024-06-27 21:58:48,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.636363636363637) internal successors, (271), 11 states have internal predecessors, (271), 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 21:58:48,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:58:48,708 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:58:48,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-27 21:58:48,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:58:48,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:58:48,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:58:48,920 INFO L85 PathProgramCache]: Analyzing trace with hash -445096780, now seen corresponding path program 1 times [2024-06-27 21:58:48,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:58:48,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462223147] [2024-06-27 21:58:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:58:48,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:58:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:58:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:58:49,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:58:49,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462223147] [2024-06-27 21:58:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462223147] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:58:49,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963023137] [2024-06-27 21:58:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:58:49,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:58:49,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:58:49,174 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 21:58:49,178 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 21:58:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:58:49,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 21:58:49,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:58:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:58:49,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 21:58:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:58:50,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963023137] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 21:58:50,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 21:58:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 13 [2024-06-27 21:58:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526329020] [2024-06-27 21:58:50,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 21:58:50,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 21:58:50,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:58:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 21:58:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-06-27 21:58:50,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-06-27 21:58:50,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 96 transitions, 632 flow. Second operand has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 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 21:58:50,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:58:50,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-06-27 21:58:50,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:59:03,097 INFO L124 PetriNetUnfolderBase]: 106763/149113 cut-off events. [2024-06-27 21:59:03,097 INFO L125 PetriNetUnfolderBase]: For 397529/405348 co-relation queries the response was YES. [2024-06-27 21:59:03,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469631 conditions, 149113 events. 106763/149113 cut-off events. For 397529/405348 co-relation queries the response was YES. Maximal size of possible extension queue 7527. Compared 1154248 event pairs, 4558 based on Foata normal form. 3110/144415 useless extension candidates. Maximal degree in co-relation 327373. Up to 50586 conditions per place. [2024-06-27 21:59:04,480 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 448 selfloop transitions, 417 changer transitions 0/879 dead transitions. [2024-06-27 21:59:04,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 879 transitions, 6789 flow [2024-06-27 21:59:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-06-27 21:59:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-06-27 21:59:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1069 transitions. [2024-06-27 21:59:04,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7203504043126685 [2024-06-27 21:59:04,483 INFO L175 Difference]: Start difference. First operand has 71 places, 96 transitions, 632 flow. Second operand 28 states and 1069 transitions. [2024-06-27 21:59:04,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 879 transitions, 6789 flow [2024-06-27 21:59:09,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 879 transitions, 5993 flow, removed 398 selfloop flow, removed 0 redundant places. [2024-06-27 21:59:09,099 INFO L231 Difference]: Finished difference. Result has 106 places, 512 transitions, 4760 flow [2024-06-27 21:59:09,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4760, PETRI_PLACES=106, PETRI_TRANSITIONS=512} [2024-06-27 21:59:09,100 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2024-06-27 21:59:09,100 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 512 transitions, 4760 flow [2024-06-27 21:59:09,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 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 21:59:09,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:59:09,101 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:59:09,115 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 21:59:09,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-06-27 21:59:09,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:59:09,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:59:09,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1713756167, now seen corresponding path program 1 times [2024-06-27 21:59:09,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:59:09,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910960426] [2024-06-27 21:59:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:59:09,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:59:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:59:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 21:59:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:59:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910960426] [2024-06-27 21:59:09,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910960426] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:59:09,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60892316] [2024-06-27 21:59:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:59:09,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:59:09,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:59:09,999 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 21:59:10,000 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 21:59:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:59:10,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-27 21:59:10,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:59:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:59:10,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 21:59:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:59:12,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60892316] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 21:59:12,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 21:59:12,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 17 [2024-06-27 21:59:12,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580055273] [2024-06-27 21:59:12,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 21:59:12,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-27 21:59:12,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:59:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-27 21:59:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-06-27 21:59:12,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-06-27 21:59:12,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 512 transitions, 4760 flow. Second operand has 19 states, 19 states have (on average 21.05263157894737) internal successors, (400), 19 states have internal predecessors, (400), 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 21:59:12,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:59:12,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-06-27 21:59:12,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand